First, it is important to realize that our tears are very important forever vision. The first thing light hits if it reaches your eye may be the tear film on the surface of the cornea. The cornea is similar to the leading window on the eye and the tears are just like a polish on that window. With each blink, the eyelid spread an easy layer of tears over the cornea. This light will be focused by the cornea and lens on the retina, forming a photo. When the tears dry up on the cornea, they leave a bumpy, irregular surface that distorts the sunlight getting into the eye and helps make the image blurry. If the tears are continually becoming dry between blinks, the top of the cornea becomes constantly irregular because of dead and dying corneal surface cells. This often triggers a reflex to generate a great deal of tears, a lot of that the tear drain method is overwhelmed and the tears drain down our face. When we see this inside the clinic, we diagnose dry eyes.
Our tears are made up of 3 components: oil, water and mucus. The watery part is done mainly inside the lacrimal gland which is within the upper outer part of our eye socket underneath the upper eyelid. There are also many smaller glands on the insides of our own eyelids. The skin for the inside of our own eyelids makes mucus and rows of glands on our eyelid margins, just behind the eyelashes, make oil. All three of these components must be present inside right comes from make tears work. Without water, the tears gum up and also you get eye matter. Without oil, the tears dry quickly between blinks. Without mucus, the tears are too thin , nor cover a persons vision well.
This brings us for the causes of dry eyes:
Lack of tear production. This happens because of age, inflammation with the tear glands (including in Sj?�gren syndrome ), hormonal changes causing less production and loss in reflex tearing.
Excessive tear evaporation. Excessive evaporation can happen as a result of tears having too few oil (usually due to blockage from the oil ducts) and never blinking enough (common when using the computer or reading).
Eyelid problems that stop the tears from being where they should be. Eyelid problems also cause dry eye. These include poor blink as a result of a facial nerve problem (i.e. Bell’s palsy, facial or head injury), eyelid deformities, eyes not closing after over-aggressive eyelid lifting, as well as in times when your eye area protrude, including thyroid eye disease.
So what may be done about this?
Get properly diagnosed by an ophthalmologist to know dry eyes. They will make this happen by investigating your eyes with a microscope, analyzing your tears with special drops and other tests, and taking a look at the health of your corneal surface. They will likely examine the eyelids to ensure you blink and close the eye appropriately.
Use artificial tears. Nearly all kinds of dry eyes benefit from extra tears. They need to be used often, at least four times daily or over to each and every 10-30 minutes in severe cases. There are many different viscosities of tears. The thicker these are, the longer they’ll last, but thicker tears often blur the vision for a while after they’re given. Tear ointments may also be helpful, especially at night as they are able significantly blur the vision when used throughout the day.
Keep your natural tears around longer. Plugs that block from the tear drains in your eyelids can keep you swallowing away those tears as they drain into the nose. In more severe cases, we often permanently close off the tear drains, which can greatly improve a persons vision surface. Your natural tears may be enhanced through omega-3 supplements.
Practice good eyelid hygiene. Warm compresses around the eyelids to helps oils circulation out with less effort in the tears. Lid scrubs with mild baby shampoo and tepid to warm water across the eyelash margin will also maintain your oil flowing and matter from accumulating within the eyelashes.
Prevent excess evaporation. Blocking out moving air can reduce evaporative tear loss. This is done by wearing close fitting sunglasses in the daytime and in many cases special moisture goggles to bed at night. Avoid sleeping within a ceiling fan or blowing the air conditioning at up your eyes while driving.
Reduce or eliminate lens wear. Contact lens wearers may use tears or “re-wetting solution” to help keep your eye
best contact solution for dry eyes best contact solution area more moist and improve lens wear comfort. Never use them overnight and clean them often, regardless of what the lens manufacturers say.
In special cases, treat inflammation. In a small number of individuals with inflammation in the tear producing glands, eye drops like Restasis will help produce more tears. In my view, this medicine is over-prescribed within this country and few patients truly get a benefit from it, so caveat emptor.
Dry eye is normal and annoying, but might be readily treated and might increase your vision and overall eye comfort.