Isolated congenital alacrima is a rare condition present from birth in which the tear glands make little or no tears. Early signs of isolated congenital alacrima often include crying without tears, dry or irritated eyes, redness, and repeated eye infections or surface damage. It is usually noticed in infancy or childhood, and it tends to be lifelong, although severity can vary. Not everyone will have the same experience. Treatment for isolated congenital alacrima focuses on protecting the eyes with artificial tears, lubricating ointments, and regular eye care, and it does not usually shorten life expectancy.
How many people live with Isolated congenital alacrima?
There is no reliable published estimate of how many people live with isolated congenital alacrima worldwide or in the United States; major rare-disease references do not give a consistent count for this condition. Instead, it appears to be extremely rare and is mostly described in single published cases or very small groups, so no dependable global or U.S. headcount is available.
Overview
Isolated congenital alacrimaSymptoms
Isolated congenital alacrima mainly causes little or no tears from birth. Many living with isolated congenital alacrima have dry, irritated, red eyes. Some may blink often, rub their eyes, or develop repeated eye infections.
Outlook and prognosis
With isolated congenital alacrima, outlook is usually good when dry eyes are treated early and regularly. Many people keep normal vision, but lifelong eye lubrication and checkups matter because untreated dryness can scar the cornea and affect sight.
Causes and risk factors
Isolated congenital alacrima usually results from a genetic change affecting tear gland development or nerve signaling, often arising before birth. It may run in families, though some cases are new. There are no known lifestyle causes.
Genetic influences
Genetics are often very important in isolated congenital alacrima, because some cases are linked to inherited gene changes that affect tear gland development or nerve signaling. Still, not everyone with isolated congenital alacrima has an identifiable genetic cause.
Diagnosis
Isolated congenital alacrima is usually diagnosed from clinical features, especially little or no tears from birth, along with an eye exam and tear testing. Genetic tests may help confirm the diagnosis of isolated congenital alacrima in some families.
Treatment and drugs
Treatment for isolated congenital alacrima focuses on protecting the eyes and keeping them moist. Many need preservative-free artificial tears often, plus lubricating gel or ointment at night. Regular eye checks help prevent corneal scratches, infections, and vision problems.
Symptoms
Many living with isolated congenital alacrima are first noticed when crying produces little or no tears, even during clear distress. Because the eyes are not kept as moist as they should be, everyday things like wind, smoke, screen time, or a dry room can cause irritation. In daily routines, this might show up as small but noticeable changes. The early features of isolated congenital alacrima usually involve the eyes, especially dryness, redness, and sensitivity to light.
Babies, children, or adults may cry with little or no visible tears. This is often the most noticeable sign, especially during strong emotions or after a minor injury.
Without enough tears, the eyes can feel dry, gritty, burning, or uncomfortable. Some may rub their eyes often, blink a lot, or seem bothered by air conditioning, wind, or indoor heating.
Ongoing dryness can make the eyes look red, irritated, or mildly swollen. Sticky or stringy mucus may collect, and this can be mistaken for repeated eye infections.
Bright light may feel harsh and lead to squinting or turning away. Sunlight, bright classrooms, and screens can be harder to tolerate when the eye surface is dry.
How people usually first notice Isolated congenital alacrima?
The first signs of isolated congenital alacrima are usually noticed very early, often when a baby cries without making tears or has eyes that seem unusually dry from the start. Parents or doctors may first notice irritation, frequent blinking, redness, sensitivity, or recurring eye discomfort, especially during feeding, fussing, or eye exams in infancy. Because tear production is reduced from birth, how isolated congenital alacrima is first noticed is often through these early dry-eye symptoms rather than a problem the child can describe in words.
Types of Isolated congenital alacrima
No distinct types of Isolated congenital alacrima are widely recognized.
Can I slow down the onset of symptoms?
No. With isolated congenital alacrima, meaning little or no tear production from birth, there is no known lifestyle change or medical treatment that can delay the start of symptoms because the condition is already there from birth. What does help is early eye care to protect the surface of the eyes and ease dryness, including regular checkups with an eye doctor and tear-replacement drops or gels; these can lower the risk of irritation and damage, but they do not prevent the condition itself. Even though you cannot slow its onset, early support can make daily comfort better and help protect vision over time.
What genetics can tell you about symptoms
For people with isolated congenital alacrima, genetics can sometimes help confirm that the tear glands did not develop or work normally from birth, which explains the main symptom of making very little or no tears. In some families, inherited gene changes are linked to this condition, but genetics usually does not predict a wide range of different symptoms because the problem is typically limited to tear production rather than affecting many parts of the body. It may give clues about whether symptoms start at birth, as they often do, but it is less useful for forecasting exactly how severe the dryness, eye irritation, or related eye surface problems will be in each individual.
Causes and risk factors
Isolated congenital alacrima usually happens because the tear glands do not fully form before birth, and some cases are linked to an inherited or new gene change such as FGF10. Genes set the stage, but environment and lifestyle often decide how the story unfolds. Dry air, wind, smoke, dehydration, and long screen time can make symptoms worse, but they do not cause the condition. Other eye or eyelid problems can raise the risk of irritation, scratches on the cornea, and infection. If isolated congenital alacrima runs in your family or starts very early, genetic testing and a full eye exam may help clarify the cause.
What are the most common causes or risk factors?
The most common cause of isolated congenital alacrima is a problem present before birth in how the tear glands, or the nerves that help them work, develop, and in some families this is linked to an inherited gene change. A family history of the condition can raise the chance, but many children with it are the first in their family to be affected. No clear non-genetic risk factors, such as common illnesses or everyday exposures during pregnancy, have been firmly proven.
Environmental and biological risk factors
When families ask about risk factors for isolated congenital alacrima, the honest answer is that doctors do not yet have a clear, proven list. Researchers are still exploring how outside influences interact with our inner biology. So far, no specific environmental exposure or non-genetic biological factor has been consistently confirmed. Most published information comes from small reports, which makes firm conclusions hard.
No environmental factor has been consistently shown to increase the chance of isolated congenital alacrima. Current reports do not support a firm link with common pregnancy exposures, infections, pollution, or chemical contact.
The condition is thought to begin very early while the tear-producing system is forming before birth. In many living with isolated congenital alacrima, the underlying biological trigger remains unknown rather than tied to a clearly identified maternal or birth-related factor.
Genetic risk factors
A baby who cries without tears from the start may have isolated congenital alacrima because the tear glands did not fully develop before birth. Among the genetic causes of isolated congenital alacrima, changes in FGF10 are the best described. Carrying a genetic change doesn’t guarantee the condition will appear. Even so, many people with isolated congenital alacrima do not have a gene change identified yet.
FGF10 changes: Changes in a gene called FGF10 are the best-established genetic cause of isolated congenital alacrima. This gene helps guide tear gland development before birth, so a harmful change can leave the glands small or absent.
Family history: Having a close relative who was born without tears or had very reduced tear production raises the chance of a genetic cause. In some families, isolated congenital alacrima is passed from one generation to the next.
Dominant inheritance: In the best-known inherited form, one altered copy of the gene can be enough to cause isolated congenital alacrima. If a parent carries that change, each child has a 1 in 2, or 50%, chance of inheriting it.
New variants: Some children with isolated congenital alacrima are the first in their family to have the gene change. This means the condition can appear even when there is no known family history.
Unknown genes: Not everyone with isolated congenital alacrima gets a clear answer from genetic testing. This suggests that other genes involved in tear gland development are still likely to be discovered.
Lifestyle risk factors
Isolated congenital alacrima is present from birth, so lifestyle habits do not cause it. However, daily routines can strongly influence eye surface dryness, irritation, and the risk of corneal injury. When discussing how lifestyle affects isolated congenital alacrima, the most important issues are habits that increase eye dryness or reduce protection of the eye surface.
Long periods of reading, gaming, or device use can lower blink rate and leave the eye surface more exposed. In isolated congenital alacrima, that can worsen burning, blurred vision, and irritation because natural tear production is already limited.
Not drinking enough fluid can make dry-eye symptoms feel worse and may reduce overall comfort at the eye surface. Good hydration does not correct alacrima itself, but it may support symptom control alongside lubricating treatment.
Contact lenses can increase friction on a poorly lubricated eye and may worsen pain, redness, or surface damage. Many people with isolated congenital alacrima need extra caution or may be advised to avoid lenses if the cornea is vulnerable.
Frequent rubbing can further irritate dry, fragile eyes and may increase the chance of corneal scratches. In a person with alacrima, even minor trauma can be more problematic because the eye has less natural tear protection.
Risk prevention
Because isolated congenital alacrima is present from birth, there is no proven way to prevent the condition itself. Prevention mainly means protecting the eyes, lowering the chance of irritation or infection, and catching damage early. Many living with isolated congenital alacrima may notice dry, uncomfortable eyes, especially in wind, heat, or after screen time. Prevention works best when combined with regular check-ups.
Regular visits with an eye doctor can help spot surface damage before it becomes serious. This is especially important if there are early symptoms of isolated congenital alacrima such as burning, redness, light sensitivity, or a gritty feeling.
Preservative-free artificial tears and lubricating eye ointment can help protect the front of the eye from drying out. Using them as advised may lower the risk of scratches, inflammation, and discomfort in isolated congenital alacrima.
Wraparound glasses, sunglasses, and avoiding direct fan or air-conditioning flow can reduce tear evaporation. For many with isolated congenital alacrima, these small daily steps make outdoor time and screen use more comfortable.
Taking regular breaks during reading or screen time can help because people tend to blink less when concentrating. A steadier blinking pattern may reduce dryness and eye strain in isolated congenital alacrima.
Can you prevent Isolated congenital alacrima?
No, isolated congenital alacrima usually cannot be prevented. It is present from birth and is thought to happen because the tear glands do not develop normally, often for reasons that are not under anyone's control and may be linked to changes in genes. At this time, there are no proven lifestyle steps, medicines, or pregnancy-related measures known to prevent it.
Transmission
Isolated congenital alacrima is not infectious, so it cannot be caught from or passed to other people through touch, coughing, kissing, or shared items. Instead, it is present from birth and is usually linked to the way the tear glands, or the nerves that help control tearing, developed before birth.
How isolated congenital alacrima is inherited can vary: some cases appear for the first time in one child because of a new genetic change, while others may run in families and be passed from parent to child. Because this condition is rare and not every case has a clearly identified cause, a genetics specialist can help explain the likely genetic transmission of isolated congenital alacrima in your family.
When to test your genes
Genetic testing is worth considering if a baby or child has little or no tears from birth, especially with dry, irritated eyes, or if relatives have alacrima, adrenal problems, or swallowing difficulty. Testing can help confirm whether it is isolated congenital alacrima or part of a broader genetic condition, guiding eye protection and follow-up.
Diagnosis
Isolated congenital alacrima is usually diagnosed when a baby or child seems to cry without tears and has ongoing eye dryness from very early life. Because this condition is present from birth, doctors often start with the pattern of symptoms and eye findings, then confirm the diagnosis with specific tear tests and, in some cases, genetic testing. It’s natural to worry when symptoms don’t have a clear explanation.
Doctors ask when the lack of tears was first noticed and whether eye irritation, redness, light sensitivity, or frequent rubbing has been present since infancy. A detailed family and health history can help show whether this fits isolated congenital alacrima or suggests a broader condition.
An eye specialist checks the eyes for signs of dryness, irritation, or damage to the front surface of the eye. They also look for other clinical features that might point away from isolated congenital alacrima and toward another diagnosis.
The diagnosis of isolated congenital alacrima is often supported by tests that measure how much tear fluid the eyes make. One common test places a small paper strip under the lower eyelid to see whether tear production is very low or absent.
Special eye drops can highlight dry or irritated areas on the cornea and conjunctiva, the clear front layer and white part of the eye. These findings help show how strongly low tear production is affecting the eyes.
How is Isolated congenital alacrima diagnosed?
Isolated congenital alacrima is usually diagnosed when a baby or child has had little or no tears from birth, and an eye doctor confirms that the tear glands are not making enough tears. The diagnosis is based mainly on the medical history, a careful eye exam, and simple tests that measure tear production, while also checking for other causes of dry eyes or for signs that the problem is part of a broader condition rather than on its own. Genetic testing may sometimes be offered, especially if there is a family history or other unusual findings, but it is usually used to support the diagnosis, not to replace the exam and tear testing.
Stages of Isolated congenital alacrima
Isolated congenital alacrima does not have defined progression stages. This is because it is usually present from birth and does not typically move through predictable phases over time, although symptoms can become more noticeable as daily eye irritation builds up. Doctors usually start with a conversation about dry-eye symptoms, such as little or no tears when crying, frequent eye rubbing, redness, or discomfort, which can be early symptoms of isolated congenital alacrima. Diagnosis is usually based on an eye exam and tests that measure tear production, and follow-up focuses on checking for irritation or damage to the surface of the eye over time.
Outlook and prognosis
The outlook for isolated congenital alacrima is generally good because the condition is usually lifelong but not progressive and does not typically affect overall growth, development, or life expectancy. Prognosis depends mainly on how well the eyes are protected from chronic dryness, since untreated tear deficiency can lead to recurrent irritation, corneal damage, infection, scarring, and, in severe cases, impaired vision. With regular ophthalmologic follow-up and treatments such as frequent lubricating drops, ointments, or other surface-protective measures, many people maintain good comfort and useful vision. Mortality is not known to be increased in isolated congenital alacrima itself. The main long-term risk is therefore ocular morbidity rather than systemic illness or shortened lifespan.
Long-term effects
People with isolated congenital alacrima may go through life with the same core issue: little or no tear production, which can affect eye comfort and eye health over many years. The long-term picture is often shaped by how dry the surface of the eyes becomes and whether irritation keeps happening. Long-term effects vary widely, from mild daily discomfort to lasting damage on the clear front layer of the eye. In some children, the early symptoms of isolated congenital alacrima show up as absent tears when crying, while in adults the main concern is often ongoing dryness and its effects on vision.
Little or no natural tearing can leave the eyes feeling dry, gritty, or sore on a regular basis. For many living with isolated congenital alacrima, this can become a long-term day-to-day issue rather than an occasional problem.
Ongoing dryness can irritate the conjunctiva and the cornea, the clear front layer of the eye. Over time, repeated irritation may lead to surface injury, scarring, or areas that do not heal well.
If the cornea becomes damaged, vision can turn blurry or fluctuate from day to day. In more severe cases, lasting corneal changes can reduce sight over the long term.
Many people with isolated congenital alacrima notice discomfort in bright light because the eye surface is less protected. This sensitivity can make reading, screen use, or being outdoors more difficult.
How is it to live with Isolated congenital alacrima?
Living with isolated congenital alacrima often means managing eyes that do not make enough tears from birth, so many people have ongoing dryness, burning, a gritty feeling, redness, or sensitivity to light, especially in wind, heat, or air-conditioned spaces. Daily life may revolve around regular lubricating eye drops, eye ointment at night, protective glasses, and follow-up with an eye specialist, because without good surface moisture the cornea can become irritated or damaged over time. For family members and other close supports, the main impact is usually helping with treatment routines, watching for signs of worsening irritation or infection, and making everyday spaces a little more eye-friendly, but with consistent care many people can protect their vision and stay active.
Treatment and drugs
Treatment for isolated congenital alacrima focuses on replacing tears and protecting the eyes, because people with isolated congenital alacrima do not make enough tears from birth and may deal with dryness, irritation, light sensitivity, or a gritty feeling day to day. The main treatment is regular use of artificial tears during the day and thicker lubricating gels or ointments at night, which can help when blinking feels uncomfortable or the eyes are dry again soon after waking. Some may also need practical steps such as avoiding smoke and wind, using humidifiers, taking screen breaks, and wearing wraparound glasses outdoors to reduce tear loss and protect the surface of the eye. Supportive care can make a real difference in how you feel day to day. Eye doctors may suggest follow-up visits, and if dryness is severe, they may consider treatments that help keep moisture on the eye longer, especially when early symptoms of isolated congenital alacrima are causing redness or repeated surface irritation.
Can you cure Isolated congenital alacrima?
No, there is no cure for isolated congenital alacrima, a condition where someone is born unable to make enough tears. Treatment focuses on keeping the eyes moist and protected with artificial tears, thicker eye drops or ointment, and regular follow-up with an eye doctor. These treatments cannot fix the underlying problem, but they can greatly reduce dryness, discomfort, and damage to the eye surface.
Non-drug treatment
Daily life with isolated congenital alacrima often means the eyes feel dry, gritty, or irritated because the tear glands do not make enough tears from birth. For many, treatment begins not at the pharmacy, but with regular eye care habits that protect the surface of the eye and lower the risk of damage. Non-drug treatments may be recommended along with eye drops or ointments, especially if symptoms are frequent or the eye surface is already irritated. These steps can also help when early symptoms of isolated congenital alacrima are mild but persistent.
Using wraparound glasses or moisture chamber eyewear can reduce tear evaporation and shield the eyes from wind, dust, and dry air. This can make outdoor time, screen use, or air-conditioned rooms more comfortable.
A humidifier at home or work can add moisture to the air and ease dryness. Some strategies can slip naturally into your routine—like avoiding direct fans, car vents, and smoke exposure.
Warm compresses and gentle eyelid cleaning can support the oily glands in the eyelids, which help slow tear loss. This may be especially helpful if dry eye symptoms come with crusting, irritation, or burning.
People with isolated congenital alacrima may blink less fully during reading or screen time, which can worsen dryness. Taking regular breaks and practicing full blinks can help spread tears more evenly across the eye.
Your genes may have an impact on how drugs work for you
For people with isolated congenital alacrima, treatment usually centers on replacing moisture in the eyes with artificial tears, gels, or ointments, and there is no well-established evidence that inherited genetic differences meaningfully change how these common treatments work. In day-to-day life, this means most people are treated based on how dry, irritated, or uncomfortable their eyes feel rather than on a genetic test. If someone living with isolated congenital alacrima also needs other medicines for separate health problems, their genes could matter for those drugs, but that is not a known key issue for the usual eye treatments used for this condition.
Pharmacological treatments
Living with isolated congenital alacrima often means the eyes feel dry, irritated, or sensitive from a very young age, sometimes with frequent redness or rubbing. There is no medicine that can make missing or underdeveloped tear glands work normally again, so treatment focuses on keeping the eye surface moist and protected. In practice, this usually means regular eye lubricants, especially when early symptoms of isolated congenital alacrima are causing discomfort or blurred vision. Some medicines work quickly, while others are mainly used at night or in more severe dryness.
Preservative-free artificial tears are usually the main treatment for isolated congenital alacrima. Common ingredients include carboxymethylcellulose, hypromellose, glycerin, or polyethylene glycol, and they help replace moisture through the day. Drops often need to be used regularly rather than only when the eyes start to sting.
Thicker gel drops such as carbomer gel or sodium hyaluronate can last longer on the eye surface than standard tears. They may help when dryness is more severe or when frequent daytime dosing is hard to keep up with. Vision can blur briefly after use.
Lubricating ointments, often made with white petrolatum and mineral oil, are commonly used at bedtime. They coat the eye overnight and can reduce morning dryness, eyelid sticking, and surface irritation. Many people with isolated congenital alacrima use these together with daytime drops.
In some cases, an eye specialist may try medicines such as cyclosporine eye drops if ongoing surface inflammation develops from chronic dryness. These drops do not replace tears directly, but they may help protect the eye surface in selected people. They are not the main treatment for isolated congenital alacrima and are usually guided by an ophthalmologist.
Genetic influences
When a baby rarely tears even while crying, families often ask about the causes of isolated congenital alacrima and whether it could be inherited. Family history is one of the strongest clues to a genetic influence. In some families, changes in genes that help the tear glands and the pathways that control them develop before birth seem to play a role, but many people with isolated congenital alacrima do not have a clear gene finding. Sometimes what looks like isolated congenital alacrima at first is later recognized as part of a broader inherited condition, so doctors may look for other medical clues as a child grows. If several relatives are affected, or if other findings are present, genetic counseling and sometimes testing can help clarify the cause and the chance of it happening again in the family.
Is Isolated congenital alacrima genetic?
Genetics are often very important in isolated congenital alacrima, because some cases are linked to inherited gene changes that affect tear gland development or nerve signaling. Still, not everyone with isolated congenital alacrima has an identifiable genetic cause.
Having a genetic risk is not necessarily a diagnosis
Genetic variants are a normal part of human biology and are common throughout the population. Most do not directly affect health and simply reflect normal variation among people. For many genes, having a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors are involved. In some cases, however, one well-understood variant in a particular gene can be enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For people with isolated congenital alacrima, treatment usually focuses on protecting the eye surface day to day, often with artificial tears during the day and a thicker lubricating ointment at night. The best treatment for isolated congenital alacrima often depends on whether the tear glands are partly working or were poorly formed from birth. Not every difference in response is genetic, but the specific gene change can influence how much natural tear production is possible and whether treatments that try to stimulate tearing are likely to help. When the glands are absent or very underdeveloped, lubricant drops, gels, moisture protection, or tear-conserving options such as punctal plugs may help more than medicines that depend on the eye making extra tears. At this point, doctors do not usually use pharmacogenetic testing to choose a specific eye drop for isolated congenital alacrima, because response is guided more by the structure of the tear system and the severity of dryness than by known drug-gene matches. A genetic diagnosis can still be useful, because it may confirm that the problem started from birth, help set realistic treatment expectations, and show whether follow-up should include checking for signs of a broader condition rather than truly isolated congenital alacrima.
Interactions with other conditions
Isolated congenital alacrima mainly affects tear production, but doctors also think carefully about whether it could be part of a broader condition rather than truly isolated. This is especially important because absent or very low tears from birth can also appear in rare disorders that affect the adrenal glands, swallowing, or the nerves that control automatic body functions. Certain diseases may overlap, meaning the dry-eye problem looks similar at first even though the larger health picture is different. For many living with isolated congenital alacrima, this can mean eye symptoms are the main issue, while others may need extra checks if they also have trouble feeding, vomiting, fainting, unusual fatigue, or poor growth. These related conditions do not cause isolated congenital alacrima itself, but they can change how doctors evaluate early symptoms of isolated congenital alacrima and decide whether more testing is needed. If tear problems occur along with other unexplained symptoms, it is worth asking whether the diagnosis should be revisited so treatment covers the whole picture, not just the eyes.
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 Isolated congenital alacrima?
Little or no tears and very dry, irritated eyes can also be caused by other dry eye problems, including tear glands that did not form normally, damage to the nerves that help make tears, or Sjogren's syndrome, where the immune system attacks glands that make moisture. In babies and children, doctors also think about rare conditions that affect more than the eyes, especially triple A syndrome, which can also cause trouble with swallowing and stress hormone problems. These are the main conditions doctors usually try to rule out before deciding the alacrima is truly isolated.
History
For families, the first clue has often been simple but unsettling: a baby cries without tears, or a child’s eyes seem dry, irritated, or unusually sensitive. What is now called isolated congenital alacrima was not recognized all at once as a distinct condition. Early doctors usually described the visible problem itself, rather than understanding it as a separate diagnosis.
Throughout history, people have described dry eyes and problems with tear production, but older medical reports often grouped very different causes together. Some cases were linked to injury, infection, or other illnesses, while others appeared to be present from birth. Not every early description was complete, yet over time doctors began to notice that some children had a lifelong lack of tears without the broader features seen in certain syndromes.
As medical science evolved, eye specialists were better able to examine the tear glands and the surface of the eye. This helped separate isolated congenital alacrima from other reasons a child might not make normal tears. Once considered very uncommon and easy to miss, it became more clearly recognized as a rare congenital condition that can occur on its own. That mattered in everyday care, because untreated dryness can lead to redness, discomfort, repeated irritation, and damage to the clear front surface of the eye.
In more recent decades, improved imaging, careful case reports, and genetic research helped confirm that isolated congenital alacrima is a real medical entity rather than just a symptom with one explanation. Researchers learned that some people have underdeveloped or absent tear glands, while others may have tear-making problems that are harder to see at first. Knowing this history helps explain why early symptoms of isolated congenital alacrima can still be overlooked, especially if a baby otherwise seems healthy. Earlier recognition now gives people living with isolated congenital alacrima a better chance of protecting their eyes and vision from the start.