Primary lacrimal atrophy is an uncommon condition in which the main tear gland becomes smaller and makes fewer tears. This can cause dry, gritty, burning eyes and blurred vision, and the early symptoms of Primary lacrimal atrophy are often mistaken for ordinary dry eye. It is usually a long-term problem and is seen most often in older adults. Primary lacrimal atrophy is not usually life-threatening, but it can affect comfort, reading, driving, and other daily tasks. Not everyone will have the same experience, and treatment usually focuses on easing dryness with artificial tears, lubricating ointments, and other dry eye care recommended by an eye specialist.
How many people live with Primary lacrimal atrophy?
Primary lacrimal atrophy is thought to be very rare, but there is no reliable published estimate for how many people are living with it worldwide or in the United States. In practice, it is usually described in small medical reports rather than counted in large population studies, so global and U.S. prevalence numbers are not consistently available.
Overview
Primary lacrimal atrophySymptoms
Primary lacrimal atrophy often causes dry, irritated eyes with burning, grittiness, or stinging. Many also notice redness, blurry vision that comes and goes, and discomfort when reading, using screens, or wearing contact lenses.
Outlook and prognosis
With primary lacrimal atrophy, the outlook is often good for vision if dry eye is recognized and treated consistently. Many living with primary lacrimal atrophy need long-term eye lubrication and regular eye checks, since symptoms can persist and flare over time.
Causes and risk factors
Primary lacrimal atrophy most often develops with aging, as the tear gland gradually shrinks and makes less fluid. Risk rises with older age, female sex, hormonal changes, and sometimes family tendency. Dry environments, smoking, and some medicines can worsen symptoms rather than cause it.
Genetic influences
For primary lacrimal atrophy, genetics do not appear to play a major, well-proven role in most cases. Some inherited differences may affect risk in a few people, but clear causative gene changes have not been firmly established.
Diagnosis
Primary lacrimal atrophy is diagnosed through an eye exam, a review of dry eye symptoms, and tests that measure tear production. In the diagnosis of primary lacrimal atrophy, doctors may also use eye-surface staining to look for damage.
Treatment and drugs
Treatment for primary lacrimal atrophy focuses on keeping the eyes comfortable and protecting the surface with artificial tears, lubricating ointment, and sometimes punctal plugs. Some people also need prescription anti-inflammatory eye drops and regular eye care to prevent damage from severe dryness.
Symptoms
Primary lacrimal atrophy often shows up as ongoing dry, irritated eyes that can make reading, screen time, driving, or being outdoors less comfortable. As tear production falls, many living with primary lacrimal atrophy notice symptoms that come and go at first, then become harder to ignore. The early symptoms of primary lacrimal atrophy are often worse late in the day or in dry, windy, or air-conditioned spaces. Symptoms vary from person to person and can change over time.
Your eyes may feel dry, rough, or as if they are not staying comfortably moist. Many people with primary lacrimal atrophy notice this most during reading, computer use, or after time in heated or air-conditioned rooms.
Some describe a sandy, dusty, or foreign-body sensation even when nothing is actually in the eye. This can be annoying all day or flare up in short episodes.
The eyes can burn, sting, or feel mildly painful, especially in wind, smoke, or low-humidity air. For many, this turns ordinary tasks like walking outside or sitting under a fan into a source of discomfort.
Vision may blur off and on, then clear briefly after blinking. In primary lacrimal atrophy, this often happens because the tear film is too thin to keep the front of the eye smooth.
How people usually first notice Primary lacrimal atrophy?
People usually first notice primary lacrimal atrophy when their eyes start feeling persistently dry, irritated, or gritty, as if something is stuck in them even when nothing is there. For many, the first signs of primary lacrimal atrophy are needing eye drops more often, trouble wearing contact lenses, blurry vision that improves after blinking, or discomfort that gets worse with reading, screen time, wind, or dry air. An eye doctor may then find that the lacrimal glands, which make much of your tears, are not producing enough moisture to keep the surface of the eye comfortable and clear.
Types of Primary lacrimal atrophy
No distinct types of Primary lacrimal atrophy are widely recognized.
Can I slow down the onset of symptoms?
There is no strong evidence that lifestyle changes or medicines can meaningfully delay the start of symptoms in primary lacrimal atrophy, a condition where the tear gland slowly makes fewer tears. Good eye habits such as not smoking, protecting your eyes from very dry air, and managing other health problems may help with comfort and dry-eye symptoms, but they have not been shown to prevent the condition or clearly postpone when it begins. There is no well-established preventive treatment, but seeing an eye doctor early if dryness starts can help you manage symptoms sooner, and simple comfort measures may still make daily life easier even if they do not change the timing of onset.
What genetics can tell you about symptoms
For primary lacrimal atrophy, genetics usually does not give a clear, reliable prediction about which symptoms someone will have, how severe they will be, or exactly when they will start. In most people, the main issue is reduced tear production leading to dry, irritated eyes, and while rare inherited conditions can affect the tear glands, primary lacrimal atrophy itself is not usually linked to one well-established gene pattern that doctors use to forecast symptoms. This means genetic testing is often less helpful than eye exams and symptom history for understanding day-to-day effects and planning care.
Causes and risk factors
Primary lacrimal atrophy usually develops when the tear gland slowly shrinks and makes less fluid with age. Common risk factors for primary lacrimal atrophy include older age, female sex, and hormone changes around and after menopause. Some risks are modifiable, and others are non-modifiable. Dry air, smoke, and long hours of screen use can make dryness worse, even if they are not the main cause of the gland change itself. A single inherited gene cause is not known, but your genes may still influence how the tear gland ages and how severe symptoms become.
What are the most common causes or risk factors?
Primary lacrimal atrophy usually does not have one clear cause, but it is most often linked to aging, as the tear-making gland can slowly shrink and produce less fluid over time. The risk is also higher in women, especially after menopause, and dry eye symptoms may be more likely or more noticeable in people taking medicines that reduce tears or who spend a lot of time in very dry or windy air. A strong inherited cause has not been clearly established for most people with this condition.
Environmental and biological risk factors
Primary lacrimal atrophy often becomes noticeable in daily life as eyes that feel dry, gritty, or easily tired because the tear gland is not making enough of the watery part of tears. The main risk factors for primary lacrimal atrophy are mostly body-based, especially age-related changes in the lacrimal gland. Doctors often group risks into internal (biological) and external (environmental), and for this condition the internal ones are usually stronger.
Getting older is the strongest known risk factor for primary lacrimal atrophy. Over time, the tear gland can shrink, lose healthy tear-making cells, and produce less fluid.
Changes in sex hormone levels, especially after menopause, can make the lacrimal gland less effective. This helps explain why many living with primary lacrimal atrophy are older women.
Low-grade inflammation inside the lacrimal gland becomes more common with age. Over years, that can replace healthy gland tissue with scar-like change and reduce tear production.
The lacrimal gland depends on healthy nerve signals to release tears when the eyes need moisture. Age-related changes in those nerves may weaken that signal and add to poor tear output.
Genetic risk factors
For most people living with primary lacrimal atrophy, a clear inherited cause has not been proven. Research into the genetic causes of primary lacrimal atrophy is still limited, and many cases seem to happen without a strong family pattern. In rare situations, inherited disorders that affect how tear glands form or work may increase the chance of severe gland dysfunction. Risk is not destiny—it varies widely between individuals.
Family history: A cluster of severe dry eye or tear gland problems in close relatives can suggest an inherited tendency. Even so, isolated primary lacrimal atrophy usually does not show a strong family pattern.
Inherited syndromes: Rare genetic conditions, such as ectodermal dysplasia, can affect the glands that make tears. When this happens, lacrimal gland problems are usually part of a broader pattern that may also involve the skin, teeth, hair, or sweat glands.
Development genes: Some rare gene changes affect the early development of the lacrimal gland, leaving it small, weak, or sometimes absent from birth. This matters most when early symptoms of primary lacrimal atrophy appear in childhood or when dry eye is unusually severe at a young age.
Chromosome changes: Very rare chromosome changes linked to gland and facial development can include poor tear production. These cases usually come with other medical or developmental features, not just isolated eye dryness.
Lifestyle risk factors
Primary lacrimal atrophy is a gradual loss of tear gland function that can worsen dry eye symptoms over time. There are no well-established lifestyle habits proven to directly cause the gland atrophy itself, but some daily behaviors can make tear deficiency more noticeable and increase irritation on the eye surface. When people ask about lifestyle risk factors for Primary lacrimal atrophy, the most relevant issues are habits that reduce tear stability, strain the ocular surface, or worsen symptoms.
Long periods of reading, phone use, or computer work can reduce blinking and let tears evaporate faster. In people with primary lacrimal atrophy, this can intensify dryness, burning, and fluctuating vision.
Not drinking enough fluids can contribute to a feeling of ocular dryness and discomfort. With reduced tear production from primary lacrimal atrophy, even mild dehydration may make symptoms more noticeable.
Active smoking can irritate the eye surface and worsen tear film instability. This may increase stinging, redness, and dry eye complaints in people with primary lacrimal atrophy.
Higher alcohol intake can promote dehydration and may temporarily worsen dry eye symptoms. In someone with primary lacrimal atrophy, this can add to tear deficiency and ocular irritation.
Risk prevention
Primary lacrimal atrophy can lead to ongoing dry, irritated eyes that make reading, screen time, or being outdoors feel uncomfortable. There is no proven way to fully prevent primary lacrimal atrophy itself, especially when it develops with aging, but you can often lower the chance of worsening dryness and protect the surface of the eyes. Prevention is about lowering risk, not eliminating it completely. For many, this also means catching dry eye symptoms early and avoiding everyday triggers that strain tear production.
Regular eye exams can pick up early symptoms of primary lacrimal atrophy and other causes of dry eye before irritation becomes more severe. Prevention works best when combined with regular check-ups.
Using a humidifier, avoiding direct fan or heater airflow, and protecting your eyes on windy days can help tears evaporate more slowly. This may reduce day-to-day discomfort for people with primary lacrimal atrophy.
Long stretches of reading or screen use can reduce blinking and make dryness worse. Short blinking breaks and screen-position changes can help protect the eye surface when primary lacrimal atrophy is present.
Some medicines can worsen dry eyes, including certain allergy, cold, or mood medicines. Talk with your doctor or pharmacist about whether any of your medicines may be adding to symptoms of primary lacrimal atrophy.
Can you prevent Primary lacrimal atrophy?
No, primary lacrimal atrophy, which means the tear gland slowly shrinks and makes fewer tears, cannot usually be fully prevented. There is no proven way to stop it from developing, especially because the exact cause is often unclear. Still, getting help early for dry, irritated eyes can help prevent related problems on the surface of the eye, even if it does not prevent the gland change itself.
Transmission
Primary lacrimal atrophy is not contagious, so it cannot be caught from someone else through touch, coughing, kissing, sex, food, or shared objects. For many living with Primary lacrimal atrophy, the issue is that the tear-making gland becomes underdeveloped or loses function, which can lead to ongoing dry, irritated eyes rather than an infection.
When people ask how Primary lacrimal atrophy is inherited, the answer is that most cases are not spread person to person, and a clear inherited pattern is not established for everyone. In some families or when it happens as part of a broader genetic condition, it may be passed from parent to child, but many cases appear without a known family history.
When to test your genes
For primary lacrimal atrophy, genetic testing is not usually part of early detection or routine care. It may be worth discussing only if dry eye starts unusually early, runs strongly in your family, or comes with other features suggesting a broader inherited disorder.
Diagnosis
When tears become noticeably less than they used to be, everyday things like reading, screen time, or being outside in wind can start to feel irritating. Primary lacrimal atrophy is usually diagnosed by combining your symptoms with an eye exam and tests that measure tear production and the health of the eye surface. Doctors usually begin with a careful history, because the diagnosis of primary lacrimal atrophy also depends on ruling out more common causes of dry eye, such as medicines, autoimmune disease, or eyelid problems.
Your eye doctor asks about dryness, burning, grittiness, blurred vision that clears with blinking, and whether symptoms are worse later in the day. A detailed family and health history can help show whether this looks like age-related tear gland shrinkage or another condition causing dry eye.
A slit-lamp exam lets the doctor look closely at the tear film, eyelids, and the front surface of the eye. This helps show signs of dryness and irritation while also checking for other problems that can mimic or worsen reduced tear production.
Simple office tests such as the Schirmer test measure how much tear fluid your eyes make over a set time. Tear breakup time may also be checked to see how stable the tear film is after blinking.
Special dyes are placed in the eye to highlight dry or damaged areas on the cornea and conjunctiva. These staining patterns help confirm that low tear production is affecting the eye surface, which is an important part of how primary lacrimal atrophy is diagnosed.
How is Primary lacrimal atrophy diagnosed?
Primary lacrimal atrophy is usually diagnosed by an eye doctor based on ongoing dry, irritated eyes and an eye exam that checks the tear glands, the surface of the eyes, and how much tear fluid the eyes make. Simple office tests may measure tear production and show whether the tears dry up too fast, and sometimes scans are used if the cause is not clear. The doctor will also try to rule out other reasons for dry eye, such as certain medicines, autoimmune illness, past injury, or aging, and genetic testing is not usually needed.
Stages of Primary lacrimal atrophy
Primary lacrimal atrophy does not have defined progression stages. This is because it is usually described by reduced tear gland function and dry eye symptoms rather than a set pattern of step-by-step decline. Often the process begins when you notice changes in daily life, such as burning eyes, blurry vision after reading, or needing eyedrops more often; these can overlap with the early symptoms of primary lacrimal atrophy. Doctors usually diagnose and monitor primary lacrimal atrophy through symptoms, an eye exam, and tear tests that measure how much moisture the eyes make and how well the tear film protects the surface of the eye.
Outlook and prognosis
The outlook for primary lacrimal atrophy is generally good in terms of life expectancy, because it is a chronic eye-surface disorder rather than a life-threatening disease. The main long-term issue is persistent or progressive dry eye symptoms, which can range from irritation and fluctuating vision to recurrent corneal surface damage if dryness is severe and not treated adequately. With regular use of lubricating therapies, protection of the ocular surface, and follow-up with an eye specialist, many people can keep symptoms under reasonable control, although treatment is often ongoing rather than curative. Prognosis for vision is usually favorable when the condition is recognized early and complications such as keratitis, epithelial breakdown, or infection are prevented. Mortality is not increased by primary lacrimal atrophy itself. In more advanced cases, quality of life can be substantially affected by chronic discomfort and visual disturbance, but serious permanent vision loss is uncommon with appropriate care.
Long-term effects
Primary lacrimal atrophy can lead to ongoing dry, irritated eyes because the tear gland no longer makes enough tears. For many, this can mean burning, stinging, blurry vision that comes and goes, and trouble with reading, screen time, or being outdoors in wind or air conditioning. Long-term effects vary widely, but the main concern is damage to the front surface of the eye when dryness is not controlled.
The most common long-term effect of primary lacrimal atrophy is persistent dryness, grittiness, and discomfort. Many living with primary lacrimal atrophy notice symptoms flare during screen use, driving, or time in heated or air-conditioned rooms.
Tears help keep the eye surface smooth, so too few tears can cause vision to blur off and on. Some may find that blinking briefly clears vision, then the blur returns.
Over time, dryness can irritate and injure the clear front layer of the eye. Early symptoms of primary lacrimal atrophy may seem mild, but long-standing dryness can lead to scratches, sore spots, or inflammation.
A dry, inflamed eye often becomes more sensitive to light and wind. This can make outdoor activities, computer work, or bright indoor spaces harder to tolerate.
How is it to live with Primary lacrimal atrophy?
Living with primary lacrimal atrophy often means dealing with chronically dry, irritated eyes that can make reading, computer work, driving, or time outdoors more tiring than they used to be. Many people notice burning, grittiness, blurry vision that comes and goes, or a need to use artificial tears often, especially in dry air or windy conditions. Daily life may need small adjustments, like taking screen breaks, using humidified air, and protecting the eyes from wind, while people around you may notice that eye discomfort can affect concentration, comfort, and mood even though the condition is usually not obvious from the outside.
Treatment and drugs
Primary lacrimal atrophy is treated by replacing missing tears and protecting the surface of the eyes, since the main problem is that the tear gland no longer makes enough moisture. Many living with primary lacrimal atrophy use artificial tears during the day and thicker lubricating gels or ointments at night, especially if their eyes feel gritty, sting when reading, or become blurry after screen time. Treatment plans often combine several approaches, including prescription anti-inflammatory eye drops, tiny plugs that help tears stay in the eye longer, and steps such as using a humidifier and taking breaks from wind, smoke, or long periods of staring at a screen. If symptoms are severe or the early symptoms of primary lacrimal atrophy are getting worse, an eye specialist may suggest additional treatments to prevent damage to the clear front surface of the eye and keep vision comfortable.
Can you cure Primary lacrimal atrophy?
No, primary lacrimal atrophy usually cannot be cured, because it means the tear-making gland has shrunk and often does not recover. Treatment is aimed at easing dry, irritated eyes and protecting the surface of the eye, often with artificial tears, lubricating ointments, and sometimes prescription eye drops or other treatments your eye doctor recommends.
Non-drug treatment
Many people seek non-drug treatment for primary lacrimal atrophy when dryness starts to interfere with reading, driving, or time on a computer. Primary lacrimal atrophy can lower tear production, so daily comfort often depends on protecting the eye surface and keeping the tears you still make from evaporating too quickly. Managing this condition often includes small routine changes at home as well as office-based procedures when symptoms are more persistent.
Dry air, fans, smoke, and strong air conditioning can make eye discomfort worse in primary lacrimal atrophy. Using a humidifier, avoiding direct airflow to the face, and choosing less irritating environments can help tears last longer.
People with primary lacrimal atrophy often blink less while reading or using phones and computers. Regular blink breaks and lowering screen time when possible can reduce burning, grittiness, and blurry vision later in the day.
Wraparound glasses or moisture chamber eyewear can shield the eyes from wind and help trap humidity near the surface. For many, treatment begins not at the pharmacy, but with simple ways to conserve tears during daily activities.
A warm compress and gentle eyelid cleaning may help if blocked oil glands are also adding to dryness. This does not reverse lacrimal atrophy itself, but it can improve the tear film and make the eyes feel less irritated.
Your genes may have an impact on how drugs work for you
For people with primary lacrimal atrophy, treatment usually focuses on easing dryness and protecting the surface of the eye, often with lubricating drops, gels, or sometimes medicines that calm irritation. At this point, there is no well-established evidence that common inherited differences have a major, routine role in how people respond to these usual treatments, so care is generally tailored to how dry, irritated, or blurry the eyes feel in day-to-day life. In other words, if one treatment does not help enough, the next step is usually to adjust the treatment plan rather than look for a genetic reason.
Pharmacological treatments
Primary lacrimal atrophy often leads to ongoing dry eye, burning, grittiness, and blurred vision that can make reading or screen time hard. Treatment usually aims to replace tears, calm surface inflammation, and help the eyes make more of their own moisture when possible. There is not usually a medicine that reverses the atrophy itself, but several drugs can ease symptoms and protect the eye surface. Finding the right medication can be a process of trial, patience, and adjustment.
Lubricating eye drops are often the first treatment for dry eye caused by low tear production. They add moisture and can ease stinging, scratchiness, and fluctuating vision. Preservative-free drops are often preferred when they are needed many times a day.
Thicker lubricants such as gels or nighttime ointments stay on the eye longer than regular drops. They can be especially helpful during sleep or when symptoms are severe. The tradeoff is that they may blur vision for a while after use.
Cyclosporine eye drops are prescription medicines that reduce inflammation in the tear glands and on the eye surface. Over time, this can help some people with primary lacrimal atrophy make more natural tears. Some medicines work quickly, while others need several weeks or months to show their full effect.
Lifitegrast is another prescription eye drop used for dry eye disease linked to inflammation. It may improve dryness, irritation, and discomfort, although some people notice a bitter taste or temporary eye irritation. Not everyone responds to the same medication in the same way.
Genetic influences
When severe eye dryness begins early in life or seems to affect several relatives, genes can be part of the picture in primary lacrimal atrophy. It’s natural to ask whether family history plays a role. Rare inherited changes in genes that help the tear glands develop before birth can lead to glands that are very small, weak, or absent, and primary lacrimal atrophy may sometimes appear as part of a broader genetic syndrome. In other people, no single gene is found, so genetics may raise risk without fully explaining why the lacrimal gland tissue shrinks or never develops normally. When doctors look into the genetic causes of primary lacrimal atrophy, they pay closest attention to early symptoms of primary lacrimal atrophy, a strong family history, and dryness that affects more than just the eyes. Genetic counseling or testing may be useful in selected cases, especially if other family members have similar symptoms.
Is Primary lacrimal atrophy genetic?
For primary lacrimal atrophy, genetics do not appear to play a major, well-proven role in most cases. Some inherited differences may affect risk in a few people, but clear causative gene changes have not been firmly established.
Having a genetic risk is not necessarily a diagnosis
Across the general population, genetic variants are common and are a normal feature of human biology. In most cases, they do not directly affect health and are simply part of natural human diversity. For many genes, having a variant tied to a condition indicates a possible association, not a definite diagnosis, especially when several genes and environmental factors are involved. However, in some situations, a single well-characterized variant in a particular gene can by itself confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For many living with Primary lacrimal atrophy, treatment is aimed at easing dryness and protecting the surface of the eye, usually with artificial tears, lubricating ointments, and sometimes prescription drops that calm inflammation. At this point, doctors do not have well-established genetic tests that tell them which of these medicines will work best or what dose is right for Primary lacrimal atrophy. Not every difference in response is genetic, but inherited changes that affect how the tear gland develops can help explain why symptoms are more severe in some people or why the condition appears along with other health issues.
If Primary lacrimal atrophy seems to run in a family, genetic evaluation may help confirm the cause and show whether it is part of a broader inherited condition. That can matter for the overall care plan, even though the best treatment for Primary lacrimal atrophy is still mostly guided by symptoms, eye exam findings, and how well your eyes stay comfortable day to day. In other words, genetics may help explain why the condition happens, but they rarely change the choice of standard dry-eye medicines in a major way right now.
Interactions with other conditions
Primary lacrimal atrophy often shows up in daily life as ongoing dry, gritty, burning eyes that can make reading, screen time, or being outdoors in wind much less comfortable. Although primary lacrimal atrophy is not usually caused by another illness, its low tear production can overlap with other eye problems such as eyelid inflammation, meibomian gland dysfunction, and surface irritation of the cornea, which may make symptoms feel worse. Doctors call it a comorbidity when two conditions occur together. For many living with primary lacrimal atrophy, that can mean the early symptoms of dry eye are harder to sort out if allergies, contact lens intolerance, or autoimmune dry eye are also in the picture. It can also interact indirectly with conditions like diabetes or thyroid eye disease, because these may further disturb the eye surface or make healing slower. If dryness seems to be getting worse, or only one eye is affected, an eye specialist may look for another cause rather than assuming primary lacrimal atrophy is acting alone.
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 Primary lacrimal atrophy?
Similar symptoms can be caused by the much more common dry eye disease linked to aging, eyelid inflammation, or poor oil flow from the small glands in the eyelids, which can all make the eyes feel gritty, sore, and blurry. Doctors also think about Sjogren syndrome, an immune condition that can damage the tear glands, and less often scarring or long-term inflammation of the tear glands themselves. Eye allergies and other long-lasting irritation on the eye surface can also look similar at first.
History
People living with primary lacrimal atrophy often notice a very ordinary problem first: their eyes feel dry, gritty, or tired, especially later in the day, when reading, or in windy air. Long before modern eye testing, doctors and families recognized that some people seemed to make too few tears over time, leading to ongoing irritation rather than a short-lived spell of dryness.
In recent decades, awareness has grown as eye specialists have become better at telling primary lacrimal atrophy apart from other causes of dry eye, such as aging, medication side effects, autoimmune disease, or injury. Earlier medical reports tended to focus on the symptoms people described, like burning, blurred vision that improves after blinking, or the feeling that something is in the eye. As medical science evolved, doctors began to understand that in some people the tear-producing gland itself gradually becomes smaller or works less well, which helps explain the early symptoms of primary lacrimal atrophy.
This clearer picture developed slowly. In the past, many cases were likely grouped under broader labels for dry eye or reduced tear production, so the condition may have been underrecognized rather than truly absent. Better imaging, closer examination of the tear glands, and more consistent medical classification have made diagnosis more accurate.
Researchers later identified that some forms have an underlying genetic basis, which helped confirm that primary lacrimal atrophy is not simply “normal aging” in everyone who has it. At the same time, history has shown that the condition can vary from one person to another. Some may have mild dryness for years, while others develop more troublesome irritation and eye surface problems earlier in life. That growing understanding has helped move care toward earlier recognition, symptom relief, and protection of the eye’s surface before dryness starts to interfere with daily life.