Retinal cancer is a rare cancer that starts in the light-sensitive tissue at the back of the eye, and it usually affects babies and young children. Many people first hear about retinal cancer when a photo shows a white pupil, or when a child develops a wandering eye or trouble seeing. Retinal cancer can grow quickly, but early treatment often works very well. Not everyone will have the same experience, but retinal cancer can be life-threatening if it spreads beyond the eye. Treatment may include laser treatment, freezing treatment, chemotherapy, radiation, or surgery, and some children need care over months to years.
How many people live with Retinal cancer?
Retinal cancer is so rare that there is no single, widely used count of how many people are living with it worldwide or in the United States, and experts usually report new diagnoses each year instead. The best-known estimates suggest about 8,000 children are diagnosed worldwide each year (World Health Organization, 2021) and about 200 to 300 children are diagnosed each year in the United States (National Cancer Institute, 2024).
Overview
Retinal cancerSymptoms
Retinal cancer often causes a white glow in the pupil, an eye that turns inward or outward, or vision problems. Early symptoms of retinal cancer can also include eye redness or swelling, though some children have no obvious symptoms at first.
Outlook and prognosis
Retinal cancer often responds well when found early, and many children keep useful vision in one or both eyes. Prognosis depends on tumor size, whether it has spread, and how quickly treatment begins.
Causes and risk factors
Retinal cancer often stems from a change in the RB1 gene, inherited from a parent or happening early in development. Family history raises risk. Most cases are not linked to lifestyle or environmental exposures.
Genetic influences
Genetics are very important in retinal cancer, because some cases are linked to changes in the RB1 gene. These changes can be inherited or happen by chance, and they often affect diagnosis, family risk, and follow-up care.
Diagnosis
Doctors diagnose retinal cancer with an eye exam using special lights and imaging, often after noticing a white pupil or vision changes. Diagnosis of retinal cancer may also include ultrasound, MRI, and sometimes genetic testing.
Treatment and drugs
Retinal cancer is treated by an eye cancer team. Care may include laser or freezing treatment, chemotherapy, and sometimes radiation; some eyes need surgery to remove the tumor or the eye to protect life and vision.
Symptoms
Retinal cancer can first show up as small changes in how the eye looks or how a child uses their vision. You might notice small changes at first, such as an unusual white reflex in photos or one eye that seems to drift. Many children do not complain of pain early on, so family members often spot the problem before the child can explain it. The early symptoms of retinal cancer should be checked quickly because early treatment can help protect vision and overall health.
A white, pale, or yellowish glow in the pupil is one of the most common warning signs. It may show up in flash photos instead of the usual red-eye effect or be visible in certain lighting.
One eye may look crossed or point in a different direction from the other eye. This can happen when the affected eye is not seeing clearly, even if a child seems otherwise well.
Some children seem to miss toys, bump into things, or hold objects very close to see them. Babies may not follow faces or lights as expected if vision is reduced.
The eye may stay red or become painful without a clear injury or common eye infection. This can happen if the cancer raises pressure inside the eye or causes inflammation.
How people usually first notice Retinal cancer?
Retinal cancer in children, most often retinoblastoma, is usually first noticed when a parent sees an unusual white glow in the pupil in photos or certain light, instead of the typical red-eye effect. Other first signs of retinal cancer can include an eye that seems to wander or cross, ongoing redness or swelling, or a child who does not seem to see normally from one eye. Sometimes it is first picked up during a routine newborn or early childhood eye exam, and in some families with an inherited risk, doctors may begin watching for how retinal cancer is first noticed even before symptoms appear.
Types of Retinal cancer
When people ask about retinal cancer, they usually mean retinoblastoma, the main cancer that starts in the retina, most often in young children. Researchers describe these categories to better understand patterns of the condition. The main types of retinal cancer in this setting are heritable and non-heritable retinoblastoma, and they can differ in when they appear, whether one or both eyes are affected, and how likely new tumors are to develop.
Heritable retinoblastoma
This type is linked to a gene change present in all or most of the body’s cells, so tumors often develop at a younger age and may affect both eyes. Many living with this form have more than one tumor in the same eye, and new tumors can appear over time. A parent might first notice a white glow in photos, crossed eyes, or vision problems in more than one eye.
Non-heritable retinoblastoma
This type usually starts from a gene change only in the retinal cells, so it most often affects one eye and tends to appear as a single tumor. Symptoms can look similar at first, such as a white pupil in pictures, an eye that turns inward or outward, redness, or poorer vision. Having one type doesn’t necessarily mean you’ll develop the others, and this form is usually less likely to lead to tumors outside the affected eye.
Can I slow down the onset of symptoms?
No, there is no good evidence that lifestyle changes or medicines can meaningfully delay the start of retinal cancer symptoms. Most retinal cancer, especially the childhood type, happens because of changes in eye cells that are not under your control, so healthy habits may support overall health but have not been shown to prevent this cancer or stop it from starting. If this cancer runs in your family, regular eye exams for babies and young children, and sometimes genetic testing, are well-established ways to find it early, which can improve treatment options even though they do not delay onset.
What genetics can tell you about symptoms
Yes. In retinal cancer, usually called retinoblastoma, genetic changes, especially in the RB1 gene, can help show whether the cancer is more likely to start very early in life, affect one eye or both eyes, and form more than one tumor, which can make symptoms and treatment needs more serious. Even so, the day-to-day signs are often similar across children, such as a white glow in the pupil in photos, an eye that seems to wander, or vision problems, so genetics is most helpful for understanding pattern, timing, and risk rather than predicting every symptom exactly.
Causes and risk factors
Most retinal cancer starts when both copies of a gene called RB1 in retinal cells stop working. This gene change may be passed down from a parent or may happen for the first time in a child. Age is another important factor, because retinal cancer is mainly seen in babies and young children. Knowing your family history is a good first step when looking at risk factors for retinal cancer. Unlike many adult cancers, no clear lifestyle habit or environmental exposure has been proven to cause retinal cancer.
What are the most common causes or risk factors?
The main known cause of retinal cancer, usually retinoblastoma, is a change in a gene called RB1 that helps control how cells grow. Some children inherit this gene change from a parent, while in others it happens by chance very early in life, so a family history is an important risk factor. It is most common in babies and young children, usually before age 5, and there are no well-proven lifestyle or environmental risk factors.
Environmental and biological risk factors
Retinal cancer most often appears very early in life, so the clearest risks are biological ones tied to how the eye develops. Researchers are still exploring how outside influences interact with our inner biology, but no common environmental exposure has been proved to be a major cause. Knowing the main risk factors for retinal cancer can help families understand why this illness usually starts so young.
Retinal cancer is far more common in babies and young children than in older children or adults. The risk is highest when retinal cells are still dividing quickly in the first years of life.
Many cases start before birth or soon after, while the retina is still forming. This early developmental window is an important biological risk because fast-changing cells are more likely to begin abnormal growth.
No everyday environmental exposure has been clearly proved to be a major risk factor for retinal cancer. Being exposed to risks in your body or environment doesn’t mean illness is inevitable.
Genetic risk factors
Most retinal cancer in children is linked to changes in a gene called RB1, and a smaller number of cases involve other rare genetic changes. Some risk factors are inherited through our genes. This means retinal cancer can run in families, but it can also appear in a child with no family history because the genetic change started for the first time. Knowing the genetic cause can help guide testing, early eye screening, and family planning.
RB1 changes: Most retinal cancer starts when both working copies of the RB1 gene stop controlling cell growth in the retina. When that growth brake fails, cells can multiply too quickly and form a tumor.
Inherited RB1: Some children are born with one altered RB1 copy in all or most of their cells because it was passed down from a parent. This greatly raises the risk of retinal cancer and often means it starts younger or affects both eyes.
New RB1 change: A child can have a harmful RB1 change for the first time even when no one else in the family has had retinal cancer. This can begin in the egg or sperm, or very early after conception.
Family history: Having a parent or sibling with retinal cancer or a known RB1 change increases the chance of the inherited form. In these families, eye screening may start before early symptoms of retinal cancer appear.
MYCN increase: Rarely, retinal cancer develops because of extra copies of another growth gene called MYCN instead of an RB1 change. This uncommon form usually appears very early in life and is often not inherited.
Chromosome 13 deletion: In a small number of children, the RB1 gene is missing as part of a larger change in chromosome 13. This can raise the risk of retinal cancer and may come with other developmental or physical differences that prompt genetic testing.
Lifestyle risk factors
For retinal cancer, lifestyle habits do not usually cause the disease, but they can influence treatment tolerance, recovery, symptom burden, and the risk of complications. When people ask about lifestyle risk factors for retinal cancer, the more practical question is often how lifestyle affects retinal cancer during treatment and follow-up. Daily habits are most relevant for protecting vision, supporting overall health, and reducing avoidable strain on the eyes and body.
Smoking does not cause most retinal cancers, but it can worsen healing after procedures and may increase inflammation and vascular stress in the eye. During cancer treatment, avoiding tobacco can support recovery and lower the burden on the heart and lungs.
Heavy alcohol use does not drive retinal cancer itself, but it can interfere with sleep, nutrition, hydration, and adherence to treatment plans. It may also worsen fatigue and make it harder to cope with chemotherapy or other therapies.
A poor diet does not trigger retinal cancer, but inadequate protein, calories, vitamins, and minerals can slow recovery and weaken the body during treatment. Balanced eating may help maintain strength, immune function, and overall resilience.
Exercise does not prevent retinal cancer, but appropriate activity can improve energy, mood, sleep, and physical conditioning during and after treatment. Activity should be matched to vision changes, treatment side effects, and the care team's advice to reduce falls or injury.
Risk prevention
For most retinal cancer, especially retinoblastoma, there is usually no sure way to prevent the cancer itself from developing. When it runs in families, the most effective prevention focuses on finding it as early as possible and lowering the chance of vision loss or spread. Different people need different prevention strategies—there’s no single formula.
If retinal cancer has affected a parent, sibling, or close relative, genetic counseling and testing can show whether a child has a higher inherited risk. This helps families plan eye checks from birth or soon after, when treatment works best.
Babies and young children with a known risk need regular eye exams by an eye specialist, often starting in the first weeks or months of life. These visits can catch early symptoms of retinal cancer before a child shows obvious problems at home.
A white glow in the pupil in photos, a wandering eye, poor vision, or eye redness should be checked quickly. Rapid assessment cannot prevent retinal cancer from starting, but it can reduce the risk of delayed diagnosis.
Children treated for retinal cancer need close follow-up because new tumors can appear, especially in inherited forms. Regular exams also help doctors spot treatment side effects and protect as much sight as possible.
Can you prevent Retinal cancer?
No, retinal cancer usually cannot be fully prevented, because it often starts from a change in the body's cells that happens before birth, especially in families where it is inherited. If retinal cancer runs in your family, meeting with a genetics specialist and making sure babies and young children have regular eye checks can help find it very early. That does not prevent the cancer itself, but early detection can make treatment more successful.
Transmission
Retinal cancer is not infectious, so it cannot be passed from one person to another through touch, coughing, kissing, blood, or everyday contact. For many families, the more useful question is how retinal cancer is inherited: some retinal cancers, especially retinoblastoma in children, can happen because of a gene change passed from a parent to a child.
In other cases, the gene change starts for the first time in the child, so there may be no family history at all. Because the chance of passing it on can differ by the exact type and gene involved, people living with retinal cancer often benefit from genetic counseling to understand risks for siblings and future children.
When to test your genes
Genetic testing matters most if retinal cancer is diagnosed in a child, affects both eyes, appears in more than one family member, or occurs at a very young age. Testing for RB1 can guide eye screening, treatment planning, and future cancer surveillance for the child and close relatives.
Diagnosis
Retinal cancer is usually diagnosed after changes in the eye are noticed, such as a white glow in photos, crossed eyes, or vision problems. Often, it’s a family member who first points out changes that lead to testing. In children, doctors often suspect retinoblastoma, the most common retinal cancer, based on the way the eye looks during an exam. The diagnosis of retinal cancer is then confirmed with specialized eye tests and imaging.
An eye specialist usually starts with a careful eye exam, often after widening the pupils with drops. This lets them look directly at the retina and check for a tumor, bleeding, or retinal detachment.
In young children, the exam is often done under anesthesia so the doctor can see the whole eye safely and clearly. This can also help measure the tumor and check whether one or both eyes are affected.
Ultrasound and other eye scans can show the size, shape, and location of the tumor. These imaging findings help confirm retinal cancer and can show problems such as calcium deposits or retinal detachment.
MRI is often used to look at the eye socket, the optic nerve, and nearby brain structures. It helps doctors see whether the cancer appears limited to the eye or may have grown beyond it.
How is Retinal cancer diagnosed?
Retinal cancer is usually diagnosed with a careful eye exam by an eye specialist, often after using drops to widen the pupil so they can clearly see the back of the eye. Doctors also use imaging tests, such as ultrasound and MRI scans, and sometimes pictures of the inside of the eye, to confirm what they see and check whether the cancer has spread; a tissue sample is usually not taken from the eye because that can be risky. If retinal cancer is suspected, genetic testing on a blood sample may also be offered, especially in children, to see if there is an inherited cause and to help guide care for the family.
Stages of Retinal cancer
Retinal cancer is usually described in stages based on how much of the eye is involved and whether the cancer has spread outside the eye. In children, this is often grouped from A to E for tumors still inside the eye, with separate stages if it has spread beyond the eye. The stage helps doctors estimate how likely it is that vision can be saved and which treatments are most likely to work. Often the process begins when you notice changes in daily life, such as a white glow in the pupil in photos or a wandering eye, which can be early symptoms of retinal cancer.
Group A
The tumors are small and limited to the retina, the light-sensitive layer at the back of the eye. At this stage, treatment often has a good chance of controlling the cancer and preserving vision.
Group B
The cancer is still only inside the eye, but the tumors are larger or closer to important parts needed for sight. Vision may be more at risk, though the eye can often still be treated successfully.
Group C
Small amounts of cancer cells have started to break away from the main tumor inside the eye. Retinal cancer at this stage may still respond well to treatment, especially when found promptly.
Group D
There is more widespread seeding of cancer cells inside the eye, making treatment more difficult. Saving the eye and useful vision becomes less likely, although control of the cancer is still the main goal.
Group E
The eye is very badly affected, and the tumor has caused severe damage or features that suggest a high risk of spread. In many cases, removing the eye is the safest way to treat retinal cancer and protect overall health.
Extraocular spread
The cancer has grown outside the eye into nearby tissues, the optic nerve, or farther into the body. This is a more advanced stage and usually needs more intensive treatment, such as chemotherapy and sometimes radiation or surgery.
Outlook and prognosis
The outlook for retinal cancer, most often retinoblastoma in children, is generally very good when it is found early and treated promptly, with survival exceeding 95% in high-income countries. Prognosis depends on whether the cancer is confined to the eye, has spread outside the eye, affects one or both eyes, and on the specific genetic background, especially RB1-related disease. When treatment begins before there is extraocular spread, many children can be cured, and doctors may also be able to preserve useful vision in at least one eye, although vision outcomes vary with tumor size and location. Mortality rises substantially if the tumor extends into the optic nerve, orbit, brain, or distant sites, and outcomes are also worse in settings where diagnosis is delayed or access to specialist care is limited. Children with inherited forms need long-term follow-up because they have an increased risk of second cancers later in life, particularly after radiation exposure. Overall, early diagnosis, care at an experienced center, and ongoing surveillance are the main factors linked to the best retinal cancer prognosis.
Long-term effects
For many people, the long-term effects of retinal cancer depend on how early it was found, whether one or both eyes were affected, and which treatments were needed. Some may find that life after treatment is shaped most by vision changes, while others are more affected by treatment-related health issues that show up later. Thinking about the long-term effects helps explain why follow-up often continues for years. Long-term effects vary widely, and many living with retinal cancer do well after treatment, especially when the cancer is treated early.
Lasting changes in eyesight are one of the most common long-term effects of retinal cancer. Some people have reduced vision in one eye, trouble with depth perception, or blind spots that affect reading, sports, or driving later in life. These changes are often more noticeable if treatment involved the center of vision or removal of an eye.
Treatment can sometimes change how the eye looks or moves, especially after surgery or radiation. An artificial eye may give a natural appearance, but some people still notice differences in eyelid position, eye socket growth, or how the eyes line up. For children treated very young, these differences may become clearer as the face grows.
People with the inherited form of retinal cancer can have a higher lifelong risk of developing other cancers, including bone and soft tissue cancers. This risk can be higher after radiation treatment. Doctors may track these changes over years to see problems early, even long after the original cancer is gone.
Chemotherapy, radiation, and local eye treatments can sometimes leave lasting effects beyond the tumor itself. Depending on the treatment, these may include cataracts, dry eye, retinal damage, hearing loss, or slower growth of bones around the eye. Some effects may be mild and stable, while others can appear years later.
How is it to live with Retinal cancer?
Living with retinal cancer can turn everyday life into a series of adjustments, especially if vision is reduced or treatment is ongoing. Many people with retinal cancer need frequent eye exams, scans, and treatments, which can disrupt school, work, driving, reading, depth perception, and other daily routines; for some, this also brings anxiety about vision loss, appearance changes, or the cancer returning. It often affects the people around you too, because family members or caregivers may help with appointments, emotional support, childcare, transportation, or adapting the home and daily schedule, but with treatment, rehabilitation, and practical support, many people find new ways to stay active and independent.
Treatment and drugs
Treatment for retinal cancer depends on the type of tumor, how large it is, whether it is in one eye or both, and whether it has spread; in children, the main goals are to save life first, then protect the eye and preserve as much vision as possible. Small tumors may be treated directly with focused laser, freezing, or heat, while larger tumors often need chemotherapy, and some people also need radiation treatment. Treatment plans often combine several approaches. If the cancer is very advanced in one eye or cannot be controlled safely, surgery to remove that eye may be the best option, and an artificial eye can usually give a natural appearance afterward.
Can you cure Retinal cancer?
Some retinal cancers can be cured, especially when they are found early and treated before they spread, but this depends on the exact type of cancer and how advanced it is. Treatment may use medicines to kill cancer cells, laser or freezing treatment, radiation, or surgery, with the goals of curing the cancer, protecting life, and saving as much vision as possible. If a cure is not possible, treatment can still help slow the cancer, control symptoms, and improve quality of life.
Non-drug treatment
Treatment for retinal cancer often aims to save life first, then protect the eye and vision when possible. For many, treatment begins not at the pharmacy, but with procedures that target the tumor directly or surgery to remove the eye if the cancer is large. The best plan depends on the tumor’s size, location, whether one or both eyes are affected, and the child’s age, since retinal cancer is most common in young children.
A focused laser can seal off blood flow to small tumors or heat them so cancer cells are damaged. This is one of the main eye-preserving treatment options for retinal cancer when the tumor is found early and is in a suitable spot.
Cryotherapy uses extreme cold on the outside of the eye to destroy small tumors near the edge of the retina. It is often done in short sessions and may be combined with other local treatments.
Gentle heat, usually delivered with a special laser, can shrink some small tumors while limiting damage to nearby tissue. It may be used alone or together with radiation for better control.
Radiation can treat tumors that are harder to reach with laser or freezing methods, including with a small radioactive plaque placed near the eye or, less often, external beam treatment. Not every approach works the same way, so the choice depends on tumor size, location, and the need to protect vision and surrounding tissues.
Your genes may have an impact on how drugs work for you
For many living with retinal cancer, the same treatment can work differently from one person to another. Small inherited differences in how the body handles medicine, along with changes inside the cancer itself, can affect how well some cancer drugs work and how likely side effects are, such as feeling sick, low blood counts, or hearing problems. Right now, doctors usually base treatment more on the size and spread of the cancer and the child’s overall health than on routine gene-based drug testing, although special testing may be used in some cases.
Pharmacological treatments
Treatment for retinal cancer often uses medicines to shrink the tumor, save the eye when possible, and lower the chance that cancer cells spread. In practice, this usually means chemotherapy rather than a daily pill taken at home. The exact drugs depend on the type of retinal cancer, the child or adult’s age, whether one or both eyes are affected, and whether the cancer has spread beyond the eye. Not everyone responds to the same medication in the same way.
Melphalan is one of the most important drugs for retinoblastoma, the most common retinal cancer in children. It may be given directly into the eye or through the artery feeding the eye, which helps deliver a high dose to the tumor while limiting effects on the rest of the body.
Topotecan is often used with melphalan, especially when doctors need stronger control inside the eye. It can be given into the eye, through the eye artery, or sometimes as part of broader chemotherapy for retinal cancer in children.
Carboplatin is a common chemotherapy drug used to shrink retinal tumors and make local treatments like laser or freezing more effective. It may be given into a vein, into the artery serving the eye, or around the eye in selected cases.
Vincristine and etoposide are often paired with carboplatin in standard intravenous chemotherapy for retinoblastoma. This combination may help when both eyes are affected or when doctors are trying to avoid removing the eye.
Genetic influences
When retinal cancer affects a child, families often want to know whether it was a chance event or something that could happen again in the family. In retinal cancer, especially the childhood form called retinoblastoma, genetics can play a major role because changes in a gene called RB1 are found in many cases. It’s natural to ask whether family history plays a role. Some children inherit an RB1 change from a parent, while in others the change starts for the first time in the child, so there may be no known family history. When this gene change is present in all or most of the body’s cells, the risk of tumors in both eyes and, later on, certain other cancers can be higher, which is why genetic counseling and testing are often recommended. Understanding the genetic causes of retinal cancer can help guide screening for siblings, future children, and long-term follow-up.
Is Retinal cancer genetic?
Genetics are very important in retinal cancer, because some cases are linked to changes in the RB1 gene. These changes can be inherited or happen by chance, and they often affect diagnosis, family risk, and follow-up care.
Having a genetic risk is not necessarily a diagnosis
Variation in genes is a normal feature of being human and is widespread among people. Most variants do not directly affect health and simply make up part of natural human diversity. For many genes, carrying a variant connected to a condition points to a possible association rather than a definite diagnosis, especially when several genes and environmental factors are involved. In some situations, however, a single well-studied variant in a specific gene can be enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
When a child is diagnosed with retinal cancer, one of the first questions is whether the tumor is linked to a change in a gene called RB1. That matters because children with an inherited RB1 change often need both eyes watched closely and may be more likely to develop new tumors over time. In retinal cancer, genetics can shape treatment choices, including whether doctors lean more toward eye-sparing treatments, chemotherapy, and avoiding radiation when possible, since inherited forms carry a higher lifelong risk of other cancers. Not every difference in response is genetic, but genetic testing can help doctors decide how intensive treatment and follow-up should be for the child and sometimes for close relatives as well. It can also guide family counseling, especially when parents are worried about the early symptoms of retinal cancer in a newborn or young child. While genetics does not usually identify one single best drug for retinal cancer, it often helps build the safest overall plan by balancing cancer control, vision, and long-term health.
Interactions with other conditions
For many living with retinal cancer, the main concern is not just the eye tumor itself but how it can connect with other health problems over time. In hereditary retinal cancer, especially the form linked to a changed RB1 gene, there is a higher lifetime risk of certain other cancers, including bone cancers, soft tissue cancers, and melanoma, so long-term follow-up matters even after the eye has been treated. Many people live with more than one health issue at a time. Some children with retinal cancer may also develop treatment-related problems such as cataracts, dry eye, or changes in vision, and these can affect school, play, and daily routines. Rarely, retinal cancer can spread beyond the eye to the brain, bones, or bone marrow, which makes the illness more serious and changes the kind of care needed. If there is a strong family history or concern about the hereditary form, genetic counseling can help families understand whether relatives may also be at risk and what screening may be useful.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Retinal cancer?
Several other eye problems can look like retinal cancer, especially in children, including a cataract, Coats disease, and a detached retina. Serious eye infections or inflammation can also cause redness, pain, poor vision, a white-looking pupil in photos, or an eye that seems to drift. Because these signs can overlap, an eye specialist needs to check the eye promptly to tell the difference.
History
Long before modern scans or genetic testing, doctors were trying to understand why some babies and young children developed a white glow in the pupil, lost vision, or had a painful enlarged eye. What we now call retinal cancer, most often retinoblastoma, was recognized through these visible changes rather than through lab tests. Families may have noticed that a child did not follow faces well in dim light, or that one eye looked unusual in flash photos, even when the child otherwise seemed healthy.
In recent decades, awareness has grown, but the medical history of retinal cancer goes back much further. Early medical reports from the 1700s and 1800s described tumors inside the eye in children, though doctors did not yet fully understand where they started or why they happened. Over time, doctors learned that these tumors arise from the retina, the light-sensing tissue at the back of the eye, and that some cases can affect both eyes while others involve only one.
Treatment also changed greatly over the years. In the past, removing the eye was often the only way to try to save a child’s life, because retinal cancer could spread beyond the eye and become life threatening. As medical science evolved, radiation treatment was introduced, followed later by chemotherapy, laser treatment, freezing treatment, and more targeted approaches that can sometimes control the cancer while preserving some vision. This has made a major difference for many families, especially when the cancer is found early.
Researchers also gradually realized that retinal cancer can run in some families, while other cases happen in children with no family history. Later studies showed that a genetic cause is involved, which helped explain why doctors sometimes recommend eye checks for relatives or close follow-up after diagnosis. Looking back helps explain why early symptoms of retinal cancer, such as a white pupil reflex or a wandering eye, are taken so seriously today. Thanks to earlier diagnosis and better treatment, survival is now very high in places where children can get prompt specialist care, although outcomes still vary around the world.