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Dry eyes : Causes, Types, Symptoms, Diagnosis ,Treatment , Risk factors , Complications , Prevention

What is Dry Eyes?

Dry eye happens once your eyes don’t build enough tears to remain wet, or when your tears don’t work correctly. this will make your eyes feel uncomfortable, and in some cases it also can cause vision problems.


Dry eye is common — it affects many Americans each year. The great news is that if you have dry eyes, there is lots of stuff you can do to keep your eyes healthy and stay comfortable.

If you have dry eyes, it means your eye surface does not have enough lubrication and moisture. This can lead to discomfort and vision problems. To help keep your eyes healthy, you need to produce tears on a regular basis.

Tears bathe the eye's surface to clean it and remove dust debris and microorganisms that could damage the cornea and lead to an eye infection.

  • A normal tear film consists of three important components: water, oil, and salt.

  • A substance that is produced by the meibomian glands in the eyelids is oily.

  • Lacrimal fluid is a watery substance that is produced by the lacrimal glands located behind the outer aspect of the upper eyelids.

  • Mucous-like substances are produced by goblet cells in the conjunctiva, which covers the white of the eye (sclera).

  • Each component of the tear film serves a specific purpose. For example, tear lipids help keep the tear film from evaporating too quickly and increase lubrication. Mucin helps anchor and spread tears across the surface of the eye.

  • If your eyes are dry, they can become red and irritated, causing a feeling of irritation.

 

The effects of dry eyes can range from subtle irritation to significant inflammation. In extreme cases, it may lead to scarring on the front surface of the eye.

There are a variety of terms used to describe dry eyes, including:

  • Keratitis sicca.This term generally refers to dryness and inflammation of the cornea.

  • Keratoconjunctivitis sicca.Dry eye is a condition that affects both the cornea and the conjunctiva.

  • Dysfunctional tear syndrome.Tears can have a poor quality just as much as they can have a low quantity.

What is Dry Eyes


Explanation of medical terms and concept Dry eyes

Dry eye disease is a common condition that happens once your tears aren't ready to offer adequate lubrication for your eyes. Tears are inadequate Associate in Nursing unstable for several reasons. For example, dry eyes may occur if you don't manufacture enough tears or if you produce poor-quality tears. This tear instability results in inflammation and harm to the eye' surface. Dry eyes feel uncomfortable. If you've got dry eyes, your eyes may sting or burn. You'll experience dry eyes in bound situations, akin to on an airplane, in a cool room, whereas riding a motorcycle or when watching a video display for some hours. Treatments for dry eyes could make you a lot more comfortable. These treatments will embody manner changes and eye drops. You'll probably have to take these measures indefinitely to regulate the symptoms of dry eyes. 

Dry eyes can cause a number of problems People with dry eyes may experience eye pain blurred vision light sensitivity headaches and a gritty feeling in the eyes Other symptoms can include stinging and burning sensations redness and excessive tearing The condition is caused by an inadequate amount of tears or poor quality of tears to keep the surface of the eye moist enough to function properly Dry eyes may be due to hormonal changes that occur during menopause; allergies; environmental factors such as air conditioning or wind; certain medications; a lack of blinking while reading or computer use; working in front of a computer for long periods; contact lens wear and chronic sinusitis.

and how to manage them When the eyes do not produce enough tears a condition called dry-eye syndrome results; this is more common as people age Some lifestyle changes may help relieve symptoms Wear sunglasses that filter ultraviolet rays when outdoors Exposure to sunlight can cause dryness of the eyes and increase tear evaporation If your job involves working at a computer all day take frequent breaks from staring at a monitor to look away and rest your eyes for about 20 minutes every hour or two Looking up frequently will stimulate blinking and prevent the buildup of tears on the surface of your eye that could lead to vision problems or eye strain Take regular breaks from reading.

There are different types of dry eyes depending on which part of the eye is affected.

If the meibomian glands do not produce enough oil, the tear film may evaporate too quickly. This is called evaporative dry eye.” The underlying condition, known as meibomian gland dysfunction, is now a factor in many cases of dry eye syndrome.

If your eyes are dry, it is usually because the lacrimal glands don't produce enough water. This can be due to a lack of aqueous (watery) fluid, or an aqueous deficiency.

There is a specific type of dry eye that will dictate the type of treatment your doctor recommends in order to relieve your dry eye symptoms.

Symptoms Dry eyes

Signs and symptoms, which usually affect both eyes, may include:

  • A stinging, burning or scratchy sensation in your eyes

  • Stringy mucus in or around your eyes

  • Sensitivity to light

  • Eye redness

  • A sensation of having something in your eyes

  • Difficulty wearing contact lenses

  • Difficulty with nighttime driving

  • Watery eyes, which is the body's response to the irritation of dry eyes

  • Blurred vision or eye fatigue

Watery eyes can also be a symptom of dry eye syndrome.

This is because when the eye's surface dries, it can produce more watery tears as a protective mechanism. But these reflex tears don't stay on the eye long enough to correct the underlying dry eye condition.

Dry eyes can cause inflammation and damage to the surface of the eye.

Dry eye syndrome can affect the results of cataract surgery and LASIK.

When to see a doctor

See your doctor if you've had prolonged signs and symptoms of dry eyes, as well as red, irritated, tired or painful eyes. Your doctor will take steps to see what's bothering your eyes or refer you to a specialist.

Causes Dry eyes

Dry eyes are caused by a spread of reasons that disrupt the healthy tear film. Your tear film has 3 layers: fatty oils, binary compound fluid and mucus. This mix unremarkably keeps the surface of your eyes lubricated, sleek and clear. issues with any of those layers will cause dry eyes. Reasons for tear film dysfunction are many, as well as internal secretion changes, response disease, inflamed palpebral glands or allergic eye disease. For a few people, the reason for dry eyes is weakened tear production or augmented tear evaporation. 

There are many reasons why someone's eyes might be dry: Some possible causes of dry eyes include:

  • Computer use When working on a computer or using a mobile device, we tend to blink less fully and less frequently. This can lead to greater tear evaporation and increased risk of dry eye symptoms.

  • Contact lenses are pieces of plastic that fit over your eyes to help you see better.It can be hard to determine how much worse contact lenses can cause dry eye problems. But dry eyes are the primary reason why people stop wearing contacts.

  • Aging Dry eye syndrome can occur at any age, but it becomes more common as you get older.

  • Menopause Men and women over the age of 50 are at greater risk of developing dry eyes.

  • Indoor environment Air conditioning and forced air heating can decrease indoor humidity. This can lead to tear evaporation, which causes dry eye symptoms.

  • Outdoor environment Conditions in dry climates (high altitudes and windy areas) increase the risk of developing dry eyes.

  • Air travel: A lot of air in airplanes is very dry, which can cause dry eye problems especially for people who fly often.

  • Smoking Smoking has been linked to serious eye problems, including macular degeneration, cataracts, and uveitis.

  • Dry eye problems can be caused by certain diseases, such as diabetes, thyroid-related conditions, lupus, rheumatoid arthritis, and Sjogren's syndrome.

  • Some prescription and nonprescription medicines can increase the risk of dry eye symptoms, including antihistamines, antidepressants, certain blood pressure medications, such as beta-blockers or diuretics, and birth control pills.

  • Eyelid problems: Blinking or sleeping with closed eyelids can cause dry eyes. This can lead to a corneal ulcer if it is not treated. Lagophthalmos can be caused by natural aging eye infections and nerve damage from trauma or cosmetic surgery. Eyebrow surgery.

  • LASIK  LASIK and other corneal refractive surgery may sometimes cause dry eyes. However, most cases of dry eyes following LASIK resolve within a few weeks. If you have dry eyes before LASIK your eye doctor may recommend treating your dry eyes before the procedure. To ensure the best LASIK results, follow these procedures:

  • Wearing a mask Some masks such as those worn to prevent the spread of COVID-19 can dry the eyes by forcing air out of the top of the mask and over the surface of the eye. Wearing glasses with a mask can direct even more air over the eyes.

  • Allergies Dry eyes can be caused by allergies, and taking antihistamines to relieve allergies can also cause dry eyes.

Decreased tear production

Dry eyes will occur once you're unable to provide enough water (aqueous fluid). The medical term for this condition is redness sicca (ker-uh-toe-kun-junk-tih-VY-tis SIK-uh). Common causes of attenuate tear production include:

  • Aging

  • Certain medical conditions together with Sjogren' syndrome, allergic eye disease, creaky arthritis, lupus, scleroderma, graft vs. host disease, sarcoidosis, thyroid disorders or fat-soluble vitamin deficiency

  • Certain medications, including antihistamines, decongestants, hormone replacement therapy, antidepressants, and drugs for high blood pressure, acne, birth control and Parkinson's disease

  • Corneal nerve sensitivity caused by contact use, nerve injury or that caused by optical maser eye surgery, although symptoms of dry eyes concerning this procedure are sometimes temporary

Increased tear evaporation

The oil film created by little glands on the sting of your eyelids (meibomian glands) may become clogged. Blocked meibomian glands are additionally common in individuals with acne rosacea or different skin disorders.

Common causes of increased tear evaporation include:

  • Posterior blepharitis (meibomian gland dysfunction)

  • Blinking less often, which tends to occur with certain conditions, such as Parkinson's disease; or when you're concentrating during certain activities, such as while reading, driving or working at a computer

  • Eyelid problems, such as the lids turning outward (ectropion) and the lids turning inward (entropion)

  • Eye allergies

  • Preservatives in topical eye drops

  • Wind, smoke or dry air

  • Vitamin A deficiency

Risk factors Dry eyes

Factors that make it more likely that you'll experience dry eyes include:

  • Being older than 50. Tear production tends to diminish as you get older. Dry eyes are more common in people over 50.

  • Being a woman. a scarcity of tears is additional common in women, particularly if they expertise secretion changes because of pregnancy, mistreatment contraception pills or menopause.

  • Eating a diet that is low in vitamin A, which is found in liver, carrots and broccoli, or low in omega-3 fatty acids, which are found in fish, walnuts and vegetable oils.

  • Wearing contact lenses or having a history of refractive surgery.

Complications

People who have dry eyes may experience these complications:

  • Eye infections. Your tears protect the surface of your eyes from infection. Without adequate tears, you may have an increased risk of eye infection.

  • Damage to the surface of your eyes. If left untreated, severe dry eyes could result in eye inflammation, abrasion of the membrane surface, corneal ulcers and vision loss. 

  • Decreased quality of life. Dry eyes can make it difficult to perform everyday activities, such as reading.

Prevention

If you experience dry eyes, concentrate on the things that are presumably to cause your symptoms. Then realize ways in which to avoid those situations so as to stop your dry eye symptoms. For instance:

  • Avoid air blowing in your eyes. Don't direct hair dryers, car heaters, air conditioners or fans toward your eyes.

  • Add moisture to the air. In winter, a humidifier can add moisture to dry indoor air.

  • Consider wearing wraparound sunglasses or other protective eyewear. Safety shields may be more to the crack and sides of eyeglasses to dam wind and dry air. raise regarding shields wherever you get your eyeglasses. 

  • Take eye breaks during long tasks. If you're reading or doing another task that needs visual concentration, take periodic eye breaks. shut your eyes for many minutes. Or blink repeatedly for a few seconds to assist unfold your tears equally over your eyes. 

  • Be aware of your environment. The air at high altitudes, in desert areas associated with airplanes , is extraordinarily dry. Once outlay time in such an environment, it's going to be useful to often shut your eyes for a couple of minutes at a time to reduce evaporation of your tears. 

  • Position your computer screen below eye level. If your display screen is higher than eye level, you'll open your eyes wider to look at the screen. Position your computer screen below eye level so you won't open your eyes as wide. This could facilitate slow evaporation of your tears between eye blinks. 

  • Stop smoking and avoid smoke. If you smoke, raise your doctor to facilitate making a quit-smoking strategy that's presumably to figure for you. If you don't smoke, keep one's distance from folks that do. Smoke will worsen dry eye symptoms. 

  • Use artificial tears regularly. If you have chronic dry eyes, use eye drops even when your eyes feel fine to keep them well lubricated.

Diagnosis Dry eyes

To know for sure if you have chronic dry eye syndrome, your eye doctor may perform one or more tests to measure the levels of tears in your eyes. These tests are called the Schirmer's test.

Dry eye disease cannot be detected simply by looking at symptoms. Symptoms can vary from person to person, and they may even be affected by someone's personality type. Part of the test involves measuring the amount of tears your eyes can produce. Your doctor will also look at your eyelids to see if they are healthy. The test will involve looking at how often you blink and what colors your tears are.

Some people with mild dry eye symptoms may not consider these difficulties to be a big deal, while others with more severe dry eye problems would see an eye doctor.

A doctor's examination of your eyes can reveal the presence and severity of dry eye syndrome and help determine the best type of treatment to keep your eyes healthy and comfortable.

Tests and procedures that may be used to determine the cause of your dry eyes include:

  • A comprehensive eye exam. An eye examination that features a whole history of your overall health and your eye health will facilitate your doctor diagnosing the reason behind your dry eyes. 

  • A test to measure the volume of your tears. Your doctor might live with your tear production mistreatment of the Schirmer test. During this test, blotting strips of paper are placed below your lower eyelids. Once 5 minutes your doctor measures the quantity of strips soaked by your tears. Another choice for activity tear volume is the phenol red thread test. During this test, a thread crammed with pH-sensitive dye (tears modify the dye color) is placed over the lower eyelid, wetted with tears for fifteen seconds then measured for tear volume. 

  • A test to determine the quality of your tears. Other tests use special dyes in eyedrops to work out the surface condition of your eyes. Your doctor appears for staining patterns on the corneas and measures however long it takes before your tears evaporate. 

  • A tear osmolarity test. This type of test measures the composition of particles and water in your tears. With dry eye disease, there will be less water in your eyes.

  • Tear samples to look for markers of dry eye disease, including elevated matrix metalloproteinase-9 or decreased lactoferrin.

Treatment Dry eyes

Dry eye syndrome is a chronic condition that usually progresses. Depending on its cause and severity, it may not be completely cured.

People with dry eyes can usually manage the condition successfully. Treatment usually results in greater comfort and fewer symptoms. Sometimes people may see sharper vision as a result of treatment.

There are many causes of dry eye disease and there are a variety of treatments that are used to treat it.

Your optometrist or ophthalmologist may ask you to complete a questionnaire about your symptoms before starting dry eye treatment. This survey will help guide the treatment and may be repeated after several weeks of treatment to see how it is working. How successful the treatment will be.

If you want to treat dry eyes successfully, you need to follow your eye doctor's recommendations and use the products he or she recommends on a regular basis.

There are a variety of ways to reduce the signs and symptoms of dry eyes. Your eye doctor may recommend only one of these remedies or a combination of them depending on the cause and severity of your condition.

For most folks with occasional or gentle dry eye symptoms, it's enough to often use over-the-counter eye drops (artificial tears). If your symptoms are persistent and a lot of serious, you have got alternative options. What you are doing depends on what's inflicting your dry eyes. Some treatments specialize in reversing or managing a condition or issue that's causing your dry eyes. alternative treatments will improve your tear quality or stop your tears from quickly debilitating aloof from your eyes.

Treating the underlying cause of dry eyes

In some cases, treating associated underlying health issues will facilitate clear up the signs and symptoms of dry eyes. For instance, if a drug is inflicting your dry eyes, your doctor could advocate a unique medication that doesn't cause that facet effect. If you've got an eye fixed lid condition, comparable to your kids turned outward (ectropion), your doctor may refer you to an eye medico who specializes in cosmetic surgery of the eyelids (oculoplastic surgeon).

Medications

Prescription medications used to treat dry eyes include:

  • Drugs to reduce eyelid inflammation. Inflammation on the sting of your eyelids will keep oil glands from secreting oil into your tears. Your doctor could suggest antibiotics to scale back inflammation. Antibiotics for dry eyes are sometimes taken by mouth, although some are used as eye drops or ointments. 

  • Eyedrops to control cornea inflammation. Inflammation on the surface of your eyes (cornea) could also be controlled with prescription eye drops that contain the immune-suppressing medication cyclosporine (Restasis) or corticosteroids. Corticosteroids aren't ideal for long-run use because of potential aspect effects. 

  • Eye inserts that work like artificial tears. If you have moderate to severe dry eye symptoms and artificial tears don't help, another choice is also a small eye insert that appears sort of a clear grain of rice. Once a day, you place the hydroxypropyl polyose (Lacrisert) insert between your lower palpebral and your eyeball. The insert dissolves slowly, cathartic a substance that's employed in eye drops to lubricate your eye. 

  • Tear-stimulating drugs. Drugs known as cholinergics (pilocarpine, cevimeline) facilitate increased tear production. These medications are offered as pills, gel or eye drops. potential facet effects embrace sweating. 

  • Eye Drops made from your own blood. These are known as autologous bodily fluid drops. they'll be AN choice if you have got severe dry eye symptoms that don't reply to the other treatment. To create these eye drops, a sample of your blood is processed to get rid of the red blood cells so mixed with a salt solution. 

Other procedures

Other procedures that may be used to treat dry eyes include:

  • Closing your tear ducts to reduce tear loss. Your doctor could recommend this treatment to stay your tears from departure your eye too quickly. this may be done by part or fully closing your tear ducts, that ordinarily serve to empty tears away. Tear ducts may be blocked with little silicone polymer plugs (punctal plugs). These are removable. Or tear ducts can be plugged with a procedure that uses heat. This is often a permanent answer referred to as thermal cautery. 

  • Using special contact lenses. Ask your doctor regarding newer contact lenses designed to assist folks with dry eyes. Some people with severe dry eyes might want special contact lenses that defend the surface of the eyes and lure moisture. These are known as scleral lenses or bandage lenses. 

  • Unblocking oil glands. Warm compresses or eye masks used daily will facilitate clear up blocked oil glands. A thermal pulsation device is otherwise used to free the oil glands, however it's unclear whether or not this methodology provides any advantage over heat compresses. 

  • Using light therapy and eyelid massage. A technique referred to as intense-pulsed lightweight medical aid followed by massage of the eyelids has tried to assist folks with severe dry eyes. 

Lifestyle and home remedies

You may be able to manage your dry eyes with frequent palpebra laundry and use of over-the-counter (OTC) eyedrops or different products that facilitate lubricating your eyes. If your condition is long run (chronic), use eye drops even once your eyes feel fine to stay well lubricated.

Selecting and using OTC products for dry eyes

A variety of nonprescription products for dry eyes are available, together with eye drops (artificial tears), gels associated ointments. speak along with your doctor regarding which could be best for you. Artificial tears could also be all you would like to regulate delicate dry eye symptoms. Some folks have to be compelled to place drops many times a day, and a few use them just once a day. contemplate these factors once choosing an over-the-counter product:

  • Preservative vs. non preservative drops. Preservatives are additional to some eyedrops to prolong shelf life. you'll be able to use eye drops with preservatives up to fourfold a day. However, exploiting the preservative drops more typically can cause eye irritation. Non Preservative eye drops are available in packages that contain multiple single-use vials. Once you employ a vial, you throw it away. If you deem eye drops over four times a day, non preservative drops are safe. 

  • Drops vs. ointments. Lubricating eye ointments coat your eyes, providing longer lasting relief from dry eyes. However, these products are thicker than eye drops and might cloud your vision. For this reason, ointments are best used simply before bedtime. Eye Drops may be used at any time and won't interfere along with your vision. 

  • Drops that reduce redness. It's best to avoid these as your solution for dry eyes, as prolonged use can cause irritation.

Washing your eyelids to control inflammation

For individuals with redness and alternative conditions that cause lid inflammation that blocks the flow of oil to the eye, frequent and mild eyelid laundry could help. to clean your eyelids:

  • Apply a warm washcloth to your eyes. Wet a clean cloth with hot water. Hold the fabric over your eyes for 5 minutes. Rewet the cloth with warm water once it cools. Gently rub the washrag over your eyelids — as well as the bottom of the eyelashes — to loosen any debris. 

  • Use a mild soap on your eyelids. Use baby shampoo or another delicate soap. place the cleansing agent on your clean fingertips and gently massage your closed eyes close to the bottom of your eyelashes. Rinse completely. 

Alternative medicine

Further study is needed, however some practice of medicine approaches might relieve your dry eye symptoms. Discuss the advantages and risks together with your doctor.

  • Fatty acids. Adding omega-3 fatty acid fatty acids to your diet could relieve dry eye signs and symptoms. These are offered as supplements and in foods comparable to flaxseed, salmon and sardines. 

  • Castor oil eye drops. These eye drops may improve symptoms by reducing tear evaporation.

  • Acupuncture. Some people have seen their dry eye symptoms improve after acupuncture therapy.

Preparing for your appointment

You're able to start out by seeing your family doctor. He or she might then refer you to an eye fixed specialist (ophthalmologist). As a result of appointments being brief, it's a decent plan to be ready for your appointment.

What you can do

  • List any symptoms you're experiencing, including any that may seem unrelated to the reason for which you scheduled the appointment.

  • List key personal information, including any recent life changes.

  • Make a list of all medications, vitamins and supplements that you're taking.

  • List questions to ask your doctor.

For dry eyes, some basic questions to ask your doctor include:

  • What's the most likely cause of my dry eyes?

  • Do I need any tests?

  • Can dry eyes get better on their own?

  • What are my treatment options?

  • What are the potential side effects of each treatment?

  • I have other health conditions. How can I best manage these conditions together?

  • Is a generic drug available for the medicine you're prescribing me?

  • Do you have any brochures or other printed material that I can take with me?

  • What websites do you recommend?

  • Do I need to plan for a follow-up visit?

Don't hesitate to ask additional questions that may occur to you during your appointment.

What to expect from your doctor

Your doctor may ask:

  • Can you describe your symptoms?

  • Do you recall when you first began experiencing symptoms?

  • Have your symptoms been continuous or occasional?

  • Do other members of your family have dry eyes?

  • Have you tried over-the-counter eye drops? Did they provide relief?

  • Are your symptoms worse in the morning or late in the day?

  • What medications do you take?

  • Have you had any radiation to the head or neck?

What you can do in the meantime

To relieve your signs and symptoms whereas you sit up for your appointment, attempt over-the-counter eye drops. seek for lubricating eye drops (artificial tears) and avoid people who advocate reducing redness within the eyes. Eye Drops that cut back eye redness will cause further eye irritation.

General summary

Dry eyes can be caused by a variety of factors including allergies medications environmental and seasonal changes People who experience dry eye syndrome may have stinging or burning sensations in their eyes when they wake up in the morning Their vision may even be blurry as well In most cases these symptoms can be treated with eye drops or other medications to relieve the discomfort and clear up any blurriness.

Can dry eyes be cured naturally?

Dry eyes also known as keratoconjunctivitis sicca (KCS) is a condition that causes the eyes to become irritated red and watery The normal amount of moisture in the eyes decreases and the cornea becomes increasingly dry and inflamed At first you may only experience mild symptoms such as burning or itching in your eyes This can progress to more severe symptoms such as blurry vision light sensitivity eye pain or irritation If left untreated KCS can even lead to permanent damage to your cornea.

How do you permanently get rid of dry eyes?

There are a number of ways to correct the symptoms of dry eyes but there is no way to permanently cure the condition That said you can make sure that your eyes always look and feel good by taking care of them properly Here are some tips:

Can dry eyes be cured?

Dry eyes can be caused by both aging and contact lens use Dry eye syndrome is a condition in which the eyes are not producing enough tears to maintain moisture on the surface of the eye This causes irritation and can affect vision There are several types of dry eye including: Lacrimal gland dysfunction (LGD) This is the most common type of dry eye caused by an inadequate amount or quality of tears that results in inflammation or breakage of the tiny glands inside your eyelids that produce tears Individuals with LGD do not produce enough tears to keep their eyes moist and comfortable This is the most common type of dry eye.

Is dry eye serious?

People who suffer from dry eye disease may experience some inconvenience but the condition is not serious Dry eye is a chronic condition that can cause recurring discomfort and visual problems It can be associated with a variety of other health conditions including allergies autoimmune diseases degenerative eye diseases trauma to the eye or even alterations in tear composition.

Can dry eyes make you blind?

Many people are surprised to learn that excessive tearing of the eyes known as epiphora is not the only cause of dry eye syndrome In fact as many as 90 percent of people who suffer from dry eyes have no symptoms related to epiphora Dry eye syndrome can be caused by a number of things including aging inflammation or trauma It can even be caused by using contact lenses for extended periods of time.

What happens if a dry eye is not treated?

Dry eye is a chronic condition that is characterized by the lack of sufficient tears in the eyes This leads to a number of other complications such as blurred vision eye redness burning and itching sensations If left untreated it can lead to serious health problems like corneal ulcers or blindness A patient who has dry eyes should take care not to rub his or her eyes wear glasses with side shields at night and use artificial tears on a regular basis to keep the eyes moistened.

Does drinking water help dry eyes?

Everyone knows that it's important to drink plenty of water — eight glasses a day right? But do you know why? We've all heard that drinking water helps flush toxins out of the body. But did you know that drinking water also helps to keep your eyes healthy by preventing dryness and irritation as well as reducing the risk of eye diseases like glaucoma and cataracts? Water can even help lower your blood pressure. Plus when we don't drink enough water our eyes become more sensitive to light (called photosensitivity) so we tend to want to wear sunglasses more often. Water also makes us look younger! That's because it hydrates.

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Dry eyes : Causes, Types, Symptoms, Diagnosis ,Treatment , Risk factors  , Complications , Prevention

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