Irritable Bowel Syndrome (IBS) and Dry Eye
Understanding the Link Between IBS and Dry Eye
Studies have found that individuals with IBS are more likely to have dry eye compared to people without digestive disorders. IBS is primarily a disorder of gut-brain interaction, and some patients may have low-grade immune activation. Dry eye is an inflammatory condition of the ocular surface. The exact reasons for their association are complex and appear to involve nervous system regulation, immune responses, and factors that affect both the gut and the eyes.
Epidemiologic studies suggest a higher prevalence of dry eye in people with IBS, but the causal relationship and underlying mechanisms remain under investigation. When your body experiences chronic digestive upset, it may trigger changes that reduce the quality and quantity of your tear film.
Some people with IBS show low-grade immune activation in the gut, while dry eye commonly involves inflammation on the surface of the eyes and in the glands that produce tears. IBS is not an autoimmune disease or an inflammatory bowel disease, but both IBS and dry eye may be influenced by systemic factors.
- Changes in immune signaling may affect multiple body systems
- Inflammation on the eye surface can disrupt the normal function of tear-producing glands
- Autonomic nervous system dysfunction and central sensitization may contribute to both conditions
- Sleep quality and comorbid mood disorders can also influence symptom severity in both areas
Autoimmune diseases often affect multiple organ systems at once, and your gut and eyes are no exception. Conditions like Sjögren's syndrome can cause both severe dry eye and digestive symptoms that mimic or overlap with IBS. In autoimmune conditions, the immune system may mistakenly attack moisture-producing glands and other healthy tissues.
When we see patients with both eye and gut concerns, we often screen for underlying autoimmune disorders, especially when your history suggests additional symptoms such as dry mouth, joint pain, or rashes. Identifying these conditions early allows us to recommend treatments that address the root cause rather than just managing symptoms.
Your gut plays a vital role in absorbing the nutrients your body needs to produce healthy tears. If dietary restriction, poor intake, or a coexisting condition such as celiac disease or inflammatory bowel disease is affecting your nutrient status, you may not be getting enough omega-3 fatty acids, vitamins A and D, or other essential components that support tear production. Note that IBS itself does not typically cause malabsorption.
Avoid high-dose vitamin A supplementation, as too much can be toxic. It is best to obtain vitamins and omega-3s from your diet when possible. Additionally, the bacteria in your gut, known as your microbiome, may influence inflammation levels throughout your body. The evidence linking IBS-related changes in the microbiome to dry eye is still evolving, but an imbalanced microbiome could potentially contribute to inflammatory processes.
Recognizing Dry Eye Symptoms When You Have IBS
Dry eye can cause a range of uncomfortable sensations that may come and go or persist throughout the day. Many patients describe a gritty or sandy feeling, as if something is in their eye even when nothing is there.
- Burning or stinging sensations in one or both eyes
- Redness that worsens as the day goes on
- Excessive tearing, which happens when your eyes try to compensate for dryness
- Sensitivity to light, wind, or air conditioning
- Difficulty wearing contact lenses comfortably
Dry eye does not just cause discomfort. It can also temporarily blur your vision or make it harder to focus, especially during activities that require sustained attention like reading or using a computer.
You might notice that your vision seems clear when you first blink but becomes hazy or distorted before you blink again. These fluctuations happen because your tear film is unstable and breaks up too quickly.
Many patients with both IBS and dry eye notice that their symptoms tend to flare up together. When your digestive system is acting up with cramping, bloating, or irregular bowel movements, your eyes may feel drier and more irritated at the same time.
Tracking these patterns can help you and your healthcare team identify triggers and develop a coordinated treatment plan. Common triggers include certain foods, stress, and hormonal changes.
While dry eye is usually not an emergency, some symptoms need immediate medical attention. Seek urgent care if you experience sudden vision loss, severe eye pain that does not improve with artificial tears, thick or colored discharge, flashes of light, or new floaters.
- Severe pain, light sensitivity, and reduced vision in contact lens wearers may suggest a corneal ulcer
- Chemical exposure or eye trauma requires immediate evaluation
- Sudden halos around lights, severe headache, nausea, and eye pain may indicate acute angle-closure glaucoma
- Rapidly worsening dry eye with severe headache, joint pain, or mouth dryness should be evaluated promptly
Risk Factors for Developing Both Conditions
Certain autoimmune diseases are known to cause dry eye and may coexist with digestive symptoms. Sjögren's syndrome is the most common autoimmune cause of dry eye and attacks moisture-producing glands throughout your body. Other conditions such as rheumatoid arthritis and lupus can coexist with dry eye and gastrointestinal symptoms, but these do not cause IBS itself. Celiac disease can mimic IBS and should be tested if certain warning signs are present.
- Sjögren's syndrome attacks moisture-producing glands and can cause severe dry eye and dry mouth
- Celiac disease can cause malabsorption that affects tear health and digestive symptoms
- Lupus and rheumatoid arthritis involve systemic inflammation and may be associated with dry eye
- Thyroid disorders can disrupt both digestive and eye function
- Patients taking hydroxychloroquine for autoimmune disease require baseline and ongoing retinal screening
Certain symptoms, often called alarm features, may indicate a condition other than IBS and warrant further medical evaluation. If you experience any of the following, discuss them with your gastroenterologist or primary care doctor.
- Unintentional weight loss or poor appetite
- Gastrointestinal bleeding, blood in stool, or black tarry stools
- Iron deficiency anemia or unexplained fatigue
- Fever, persistent vomiting, onset of symptoms after age 50, or nocturnal symptoms that wake you from sleep
- Family history of colorectal cancer or inflammatory bowel disease
Some medications prescribed to manage IBS symptoms can worsen dry eye as a side effect. Anticholinergic drugs, which are sometimes used to reduce cramping and diarrhea, work by blocking certain nerve signals, but they also reduce tear production. Examples include antispasmodics like dicyclomine and hyoscyamine.
Other medications that may worsen dry eye include tricyclic antidepressants used for IBS-related pain, SSRIs and SNRIs for mood and pain management, first-generation antihistamines, bile acid binders, and opioids. If you are taking any medications for IBS and notice your eyes becoming drier, let us know. We can work with your gastroenterologist to find alternatives or add eye treatments to your regimen to counteract the drying effects.
Women are diagnosed with IBS and dry eye at much higher rates than men. Hormonal fluctuations related to menstruation, pregnancy, and menopause can affect both gut motility and tear production.
Estrogen and progesterone influence inflammation, immune function, and the health of mucous membranes throughout your body, including your eyes and digestive tract. This is why many women notice their symptoms change with their menstrual cycle or worsen during perimenopause.
Stress is a powerful trigger for both IBS and dry eye. When you experience chronic stress, your body releases hormones and inflammatory chemicals that can disrupt digestion and reduce tear production.
- Stress activates your fight-or-flight response, which slows digestion
- Elevated cortisol levels can increase inflammation in your eyes and gut
- Anxiety can lead to behaviors like reduced blinking or clenching your jaw
- Poor sleep from stress compounds both conditions
How We Diagnose Dry Eye in Patients with IBS
When you come in with dry eye symptoms, especially if you have IBS, we perform a thorough examination of your eyes and eyelids. We look at the surface of your eyes under magnification to check for signs of inflammation, damage, or irregularities in your tear film.
We also examine your eyelid margins and the glands that produce the oily layer of your tears, called meibomian glands. We check for Demodex mites, which can leave collarettes or debris at the base of your lashes, and look for lid margin telangiectasia, which are tiny blood vessels that suggest inflammation. We evaluate your blink completeness and check whether your eyelids fully close during sleep, a condition called nocturnal lagophthalmos.
We use several tests to measure the quantity and quality of your tears. One common test involves placing a small strip of paper under your lower eyelid to measure how much moisture your eyes produce over a set period.
- Tear breakup time tests show how quickly your tear film becomes unstable
- Corneal and conjunctival staining with fluorescein and lissamine green dyes reveal damage to the eye surface
- Osmolarity testing measures the salt concentration in your tears
- Meibography uses imaging to visualize the health of your oil glands
- Tear meniscus height evaluation and inflammatory marker tests such as MMP-9 can identify specific proteins linked to dry eye
Understanding your overall health is essential to diagnosing and treating dry eye effectively. We will ask detailed questions about your IBS, including when it started, what symptoms you experience, and what treatments you have tried.
Be prepared to discuss any other medical conditions, all medications and supplements you take, dietary patterns such as following a low-FODMAP diet, any weight changes, the severity of diarrhea or constipation, and whether you have noticed any patterns between your digestive symptoms and eye discomfort. This information helps us develop a treatment plan tailored to your specific situation.
Because the combination of dry eye and digestive issues can be a sign of Sjögren's syndrome or other autoimmune diseases, we may recommend additional testing. This can include blood tests to check for specific antibodies that indicate autoimmune activity. Schirmer testing and ocular surface staining patterns may also suggest Sjögren's syndrome.
If we suspect an underlying autoimmune condition, we will coordinate with your primary care doctor or a rheumatologist to ensure you receive comprehensive care. Early diagnosis of these conditions is important because treatments can prevent long-term damage. In some cases, oral medications called secretagogues can help stimulate saliva and tear production when appropriate.
Treatment Approaches for Dry Eye and IBS
Over-the-counter artificial tears are often the first line of treatment for mild to moderate dry eye. We typically recommend preservative-free formulations, especially if you need to use drops more than four times per day, because preservatives can irritate your eyes over time.
Different artificial tears have different formulations, and some work better than others depending on the type of dry eye you have. For evaporative dry eye, we may recommend lipid-containing tears that help restore the oily layer of your tear film. Using gels or ointments at night can provide longer-lasting relief, and moisture chamber glasses can help in severe cases by reducing tear evaporation. We can help you choose the best option and show you how to apply them correctly for maximum relief.
If artificial tears alone are not enough, we may recommend prescription eye drops that help your eyes produce more natural tears. These medications work by reducing inflammation on the surface of your eyes and stimulating your tear glands.
- Cyclosporine eye drops reduce inflammation and increase tear production over time, though they may cause transient burning when first applied
- Lifitegrast eye drops block inflammatory signals on the eye surface and may also cause temporary burning or stinging
- Varenicline nasal spray stimulates tear production through nasal nerves but can cause sneezing and throat irritation
- Perfluorohexyloctane eye drops are designed specifically for evaporative dry eye and help stabilize the tear film
- Most prescription treatments take several weeks to show full benefits
For severe inflammation, we may use topical corticosteroid eye drops for short-term relief before starting maintenance therapy with immunomodulators. Steroid eye drops must be used under close supervision because they can raise intraocular pressure and increase the risk of cataracts if used long term. In some cases, oral antibiotics like low-dose doxycycline or azithromycin can help improve meibomian gland function, but these may aggravate gastrointestinal symptoms in some people with IBS, so we coordinate closely with your gastroenterologist.
Some treatments target inflammation systemically and may potentially improve both your dry eye and IBS symptoms, though evidence varies. Omega-3 fatty acid supplements, particularly those high in EPA and DHA, have been studied for both conditions, but results are mixed and benefits are not guaranteed.
If you choose to try omega-3 supplements, discuss the appropriate dose with your healthcare provider and be aware of potential side effects such as increased bleeding risk if you are taking anticoagulants or blood thinners. Some people with IBS also experience worsening gastrointestinal symptoms such as upset stomach or diarrhea from omega-3 supplements. For patients with confirmed autoimmune conditions, systemic medications prescribed by a rheumatologist can address inflammation in both the eyes and the gut.
Good eyelid hygiene and simple home care routines can significantly improve dry eye symptoms and are important for managing chronic conditions like meibomian gland dysfunction.
- Apply warm compresses to your closed eyelids for 5 to 10 minutes, followed by gentle eyelid massage to help release oils from blocked glands
- Perform daily lid hygiene using non-irritating eyelid cleansers or hypochlorous acid spray to reduce bacteria and debris
- Practice blink training during prolonged screen use to ensure complete blinks that spread your tear film
- Limit contact lens wear during flare-ups and consider daily disposable lenses to reduce irritation
- Use nighttime ointment or gel for extended lubrication while you sleep, and if your eyes do not fully close during sleep, consider taping lids gently or using moisture goggles
Advanced Treatments and Coordinated Care
When dry eye does not respond adequately to drops and lifestyle changes, we offer several in-office treatments. These procedures can provide longer-lasting relief by addressing the underlying causes of your dry eye.
- Punctal plugs block tear drainage to keep more moisture on your eyes, but we first ensure that active ocular surface inflammation is controlled to avoid trapping inflammatory molecules
- Thermal pulsation systems such as LipiFlow, TearCare, or iLux apply heat and pressure to unclog meibomian glands
- Intense pulsed light therapy and radiofrequency treatments reduce inflammation around the oil glands and may be considered based on skin type and candidacy, though IPL is used off-label for dry eye in some regions
- Meibomian gland expression can help improve gland function
- Lotilaner 0.25% eye drops may be prescribed when Demodex collarettes are present on your lashes
Because IBS and dry eye can share common triggers and underlying factors, we strongly encourage communication between your eye doctor and your gastroenterologist. When your healthcare providers work together, they can ensure that treatments for one condition do not worsen the other.
For example, if your gastroenterologist is considering a medication that might dry your eyes, we can proactively adjust your eye treatment plan. Similarly, if we identify an autoimmune condition through your eye examination, your gastroenterologist may want to adjust your digestive care. If you are taking medications like hydroxychloroquine for an autoimmune condition, we will coordinate retinal screening as needed. We also work together to choose medications that minimize ocular side effects when feasible.
For severe or persistent dry eye that has not improved with standard treatments, we may discuss advanced options. These might include specialized contact lenses called scleral lenses or custom PROSE devices that protect your eye surface and create a fluid reservoir. Autologous serum eye drops made from your own blood or platelet-rich plasma tears may be considered where available.
It is important to note that cenegermin is a prescription treatment specifically for neurotrophic keratitis, not routine dry eye. Newer treatments continue to emerge, and in 2025, we focus on evidence-based therapies with established safety and effectiveness profiles. We will always explain the benefits and risks of any advanced treatment so you can make an informed decision.
Daily Habits to Manage Dry Eye Alongside IBS
Your diet plays an important role in managing both dry eye and IBS. Anti-inflammatory foods like fatty fish, leafy greens, nuts, and berries provide nutrients that support tear production and may help reduce gut inflammation.
- Omega-3 supplements may help some people, but discuss dosing with your provider and be aware of potential gastrointestinal upset
- Vitamin D supports immune function and may be beneficial for both conditions
- Probiotic-rich foods like yogurt may support a healthy gut microbiome, but some are high in FODMAPs and may not be tolerated by everyone with IBS
- Avoid high-dose vitamin A supplementation due to toxicity risk and try to obtain vitamins from dietary sources first
- Stay hydrated with water to help maintain tear volume and digestive function, and avoid foods that trigger your IBS
Consider working with a registered dietitian to develop a personalized nutrition plan tailored to your needs.
Dehydration can make both dry eye and IBS worse. When your body does not have enough water, it prioritizes vital organs and reduces moisture to areas like your eyes and digestive tract.
Aim to drink water consistently throughout the day rather than gulping large amounts at once. Carry a water bottle with you, and pay attention to signs of dehydration like darker urine, fatigue, or increased eye dryness. During diarrhea-predominant flares, consider oral rehydration strategies and electrolyte solutions to maintain proper hydration balance.
Environmental factors like wind, smoke, air conditioning, and dry air can rapidly worsen dry eye symptoms. Wearing wraparound sunglasses outdoors can shield your eyes from wind and reduce tear evaporation.
Indoors, consider using a humidifier in your bedroom or workspace to add moisture to the air. Position fans and air vents so they do not blow directly on your face. Take regular breaks during screen time to rest your eyes and blink fully. Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. If you use a CPAP machine, ensure proper mask fit to avoid air leaks that can dry your eyes overnight.
Since stress can trigger both IBS and dry eye, finding effective stress management techniques is crucial. What works varies from person to person, so experiment with different approaches to find what helps you most.
- Regular physical activity can reduce stress hormones and inflammation
- Mindfulness meditation and deep breathing exercises calm your nervous system
- Adequate sleep is essential for managing stress and healing your body
- Talking with a therapist can help you develop coping strategies
Poor sleep can worsen both dry eye and IBS by increasing inflammation and disrupting the body's natural healing processes. During sleep, your eyes are closed for an extended period, which helps them recover and produce fresh tears.
Creating a consistent sleep schedule, keeping your bedroom cool and dark, and avoiding screens before bed can all improve sleep quality. If you have trouble sleeping due to digestive discomfort or eye irritation, talk to your healthcare providers about strategies to break this cycle. If you experience nocturnal lagophthalmos or wake with very dry eyes, using a nighttime ointment or moisture goggles can help protect your eyes while you sleep.
Keeping a symptom diary can help you and your doctors identify patterns and triggers. Note when your eyes feel dry, when you have digestive flares, what you ate, your stress levels, and any other relevant factors. Validated tools such as the OSDI or DEQ-5 questionnaires can help you track dry eye symptom severity over time.
We typically recommend follow-up visits every few months initially to monitor your progress and adjust treatments as needed. Keep in mind that some therapies, such as immunomodulator eye drops, may take 8 to 12 weeks to show full benefit. Contact us sooner if your symptoms worsen significantly, if treatments are not helping after a reasonable trial period, or if you develop new concerning symptoms.
Frequently Asked Questions
Some patients find that when they get their IBS under better control, their dry eye symptoms also improve, though improvement is not guaranteed. This may be because reducing gut-related inflammation and stress can lower overall inflammation levels in your body, including in your eyes. Working with both your eye doctor and gastroenterologist gives you the best chance of improvement in both areas.
Emerging research suggests that probiotics may help some people by improving gut health and may reduce systemic inflammation, which could indirectly benefit dry eye. However, the evidence is still evolving and results vary from person to person. While probiotics are generally safe and may help your IBS symptoms, some people experience gastrointestinal side effects. Discuss with your gastroenterologist whether probiotics might be appropriate for your specific situation.
Yes, anticholinergic medications used to treat IBS-related cramping and diarrhea can significantly reduce tear production and worsen dry eye. Other medications that may have drying effects include tricyclic antidepressants, SSRIs and SNRIs, first-generation antihistamines, and certain antispasmodics. Always tell both your eye doctor and gastroenterologist about all the medications you take so they can choose options that minimize eye-related side effects when possible.
Absolutely. Your digestive health is highly relevant to your eye health, especially when it comes to dry eye. Knowing about your IBS helps us understand the full picture, screen for related conditions, and tailor treatments that work with your overall health rather than against it. Never hesitate to share your complete medical history with any healthcare provider.
Dry eye and IBS symptoms may sometimes flare together, possibly reflecting shared triggers like stress, sleep disruption, or dietary factors. However, worsening dry eye is not necessarily a direct indicator that your IBS is progressing. If you notice both conditions flaring together or your dry eye suddenly becomes much worse, it is worth discussing with both your eye doctor and gastroenterologist. This could signal the need to adjust your treatment plan, identify new triggers, or screen for conditions like autoimmune disease or medication effects.
Getting Help for Irritable Bowel Syndrome (IBS) and Dry Eye
Living with both IBS and dry eye can be challenging, but effective treatments are available. Our eye doctor can evaluate your dry eye, coordinate with your other healthcare providers, and create a personalized treatment plan that addresses your unique needs. If you are experiencing persistent eye discomfort along with digestive symptoms, we encourage you to schedule a comprehensive eye examination so we can help you find relief. If you experience any gastrointestinal alarm features or new systemic symptoms, seek evaluation to rule out conditions beyond IBS.