What Is Dry Eye?
Our eyes need tears to stay healthy and comfortable. If your eyes do not produce enough tears, it is called dry eye. Dry eye is also when your eyes do not make the right type of tears or tear film.
How do tears work?
When you blink, a film of tears spreads over the eye. This keeps the eye’s surface smooth and clear. The tear film is important for good vision.
The tear film is made of three layers:
- An oily layer
- A watery layer
- A mucus layer
Each layer of the tear film serves a purpose.
The oily layer is the outside of the tear film. It makes the tear surface smooth and keeps tears from drying up too quickly. This layer is made in the eye’s meibomian glands.
The watery layer is the middle of the tear film. It makes up most of what we see as tears. This layer cleans the eye, washing away particles that do not belong in the eye. This layer comes from the lacrimal glands in the eyelids.
The mucus layer is the inner layer of the tear film. This helps spread the watery layer over the eye’s surface, keeping it moist. Without mucus, tears would not stick to the eye. Mucus is made in the conjunctiva. This is the clear tissue covering the white of your eye and inside your eyelids.
Normally, our eyes constantly make tears to stay moist. If our eyes are irritated, or we cry, our eyes make a lot of tears. But, sometimes the eyes don’t make enough tears or something affects one or more layers of the tear film. In those cases, we end up with dry eyes.
Dry Eye Symptoms
Here are some of the symptoms of dry eye.
- You feel like your eyes are stinging and burning
- There is a scratchy or gritty feeling like something is in your eye
- There are strings of mucus in or around your eyes
- Your eyes are red or irritated. This is especially true when you are in the wind or near cigarette smoke
- It is painful to wear contact lenses
- You have lots of tears in your eyes
Having a lot of tears in your eyes with “dry eye” might sound odd. But your eyes make more tears when they are irritated by dry eye.
Causes of Dry Eye
People tend to make fewer tears as they get older due to hormonal changes. Both men and women can get dry eye. However, it is more common in women—especially those who have gone through menopause.
Here are some other causes of dry eye.
- Certain diseases, such as rheumatoid arthritis, Sjögren’s syndrome, thyroid disease, and lupus
- Blepharitis (when eyelids are swollen or red)
- Entropion (when eyelids turn in); ectropion (eyelids turn outward)
- Being in smoke, wind or a very dry climate
- Looking at a computer for a long time (reduced blinking)
- Using contact lenses for a long time
- Having refractive eye surgery, such as LASIK
- Taking certain medicines, such as:
- Diuretics (water pills) for high blood pressure
- Beta-blockers, for heart problems or high blood pressure
- Allergy medicines (antihistamines)
- Sleeping pills
- Anxiety medicines
Tell your ophthalmologist about all the prescription and non-prescription medicines you take.
Dry Eye Treatment
If you are experiencing eye dryness, irritation, light sensitivity, vision fluctuations, contact lens intolerance, and eye fatigue, you may be a candidate for a new treatment called LipiFlow® Thermal Pulsation Therapy for evaporative dry eye syndrome.
Of millions of people in the U.S. that suffer from dry eye, a majority have evaporative dry eye, which stems from a deficiency in the oil (lipid) layer of the eye’s tear film. The lipid deficiency is due to blockages in the Meibomian glands located in the eyelids. The lipids serve to protect the water (aqueous) layer of tears so that the tears do not evaporate too quickly.
Treat the Cause of Evaporative Dry Eye
LipiFlow® therapy consists of the application of localized heat and pressure to the eyelids in patients with Meibomian Gland Dysfunction (MGD), also known as evaporative dry eye or lipid deficient dry eye.
Unlike traditional treatments (e.g., warm compresses, wetting drops and ointments) that address dry eye symptoms, LipiFlow® treats the root cause, the obstructed Meibomian glands. If left untreated, dry eye can lead to further ocular deterioration and additional problems. The goal of unblocking the glands is to allow them to resume their natural production of lipids required for a healthy tear film. LipiFlow® treatments can only be provided by a licensed physician.
How LipiFlow® Works:
- LipiFlow® uses a disposable eyepiece to apply controlled heat to the inner eyelids and intermittent gentle pressure to the outer eyelid.
- LipiFlow® facilitates the release of lipids from the blocked Meibomian glands allowing the natural flow of lipids to resume.
- LipiFlow® is an in-office procedure that takes approximately 20 minutes. Both eyes can be treated simultaneously.
What to Expect from LipiFlow:
In a controlled clinical trial, a majority of patients treated with LipiFlow® reported an improvement in overall dry eye symptoms at 4 weeks post-treatment.
You would not be a candidate for LipiFlow® if you recently had eye surgery, eye injury, herpes of the eye or chronic eye inflammation. LipiFlow may not fit all eyes. Possible side effects from LipiFlow® include redness, burning, stinging, discharge, blurred vision, dryness and sensitivity to light. Talk to your Dr. Calderone about the benefits, safety, and risks of LipiFlow®.
If dry eye is hindering you from the activities you love, we are here to help. Please contact us to schedule an appointment for a dry eye assessment.
Your ophthalmologist might tell you to use artificial tears. These are eye drops that are like your own tears. You can use artificial tears as often as you need to. You can buy artificial tears without a prescription. There are many brands. Try a few until you find a brand that works best for you.
If you use artificial tears more than six times a day or are allergic to preservatives, you should use preservative-free tears. This is because if the tears with preservatives are used a lot, these chemicals may start to irritate your eyes.
Your ophthalmologist may suggest blocking your tear ducts. This makes your natural tears stay in your eyes longer. Tiny silicone or gel plugs (called punctal plugs) may be inserted in your tear ducts. These plugs can be removed later as needed. Your ophthalmologist could also recommend surgery that permanently closes your tear ducts.
Increasing your tears
Your ophthalmologist might have you use a special eyedrop medication. This helps your eyes make more of their own tears.
Treating dry eye culprits
If your eyes are irritated, your ophthalmologist can treat those problems. They may recommend:
- prescription eye drops or ointments
- warm compresses on the eyes
- massaging your eyelids
- certain eyelid cleaners
Dry eye prevention tips
- Try not to use a hair dryer, if possible.
- Stay away from very warm rooms. In the winter, add moisture to the air with a humidifier. Or put a pan of water near your heater or radiator.
- Protect your eyes from drying wind by wearing wrap-around glasses outside.
- Talk to your ophthalmologist about adding omega-3 fatty acids to your diet for dry eye relief. They are found naturally in oily fish (such as salmon, sardines, tuna, trout, and anchovies), and in flaxseeds. Omega-3 fatty acids can be added as a dietary supplement (pill or tablet).
- Do you wake up with dry and scratchy eyes? Use artificial tear ointment or thick eye drops just before you go to bed.