The eye is an extraordinary and intricate organ. Each eye contains more than twenty parts. Its function is highly specialized. There are numerous disorders and diseases of the eye, some common, some rare. Many vision problems can be corrected with eyeglasses, others cannot. Following is information on some of the more common eye conditions.
The macula is in the center of the retina, located at the back of the eye. It allows perception of fine detail. AMD destroys sharp central vision, such as that needed for reading and driving.
AMD is the leading cause of vision loss in people over the age of 60. It is painless, and can cause a slow or rapid decrease in vision. Risk factors include age, smoking history, obesity, race (most common in Caucasians), and gender (more common in women).
There is no current medical treatment for dry AMD; use of aids, such as (prescription eyeglasses) that magnify print, can be helpful.
Posterior Vitreous Degeneration (PVD):
The vitreous is the clear jelly-like substance that fills the eye between the lens and the retina. It is 99 percent water, 1 percent collagen. The vitreous is attached to the retina.
There is no treatment for PVD; eventually the brain adapts to the floaters and people adjust to them. It does not cause permanent sight loss, though it can lead to retinal detachment if the vitreous pulls hard enough to tear the retina. Retinal detachment is treated separately from PVD (see below).
The optic nerve is attached to the back of the eye near the macula, the center of the retina. It is responsible for sending electrical impulses to the brain to form images when light enters the retina.
In order for the eye to retain its shape, it needs to maintain a certain amount of pressure. As people age, pressure changes can occur and/or the optic nerve can weaken. When the optic nerve is damaged at the point where it leaves the eye, glaucoma occurs.
Treatment for glaucoma consists of reducing the pressure in the eye and increasing blood supply to the optic nerve. Eye drops are commonly used, and may be followed by laser therapy, or trabeculectomy. Treatment cannot restore vision loss that has already occurred, but can slow down or prevent further loss of sight.
The crystalline lens of the eye is a clear capsule-like bag that hangs behind the iris. It focuses light on the retina, so the retina can transmit visual images to the brain.
Cataracts can be removed with surgery, a quick, painless procedure accomplished under local anesthetic. The clouded lens is removed and replaced with a small plastic lens. Follow-up treatment includes a series of eye drops to facilitate healing.
The uvea is the inner layer, between the sclera (at the front of the eye) and retina (at the back of the eye), comprised of the iris, the choroid, and the ciliary body. The uvea supplies blood to the retina.
Uveitis can be caused by many things: a viral infection, a fungal infection, a parasite, trauma to the eye, or it can be related to an autoimmune condition such as rheumatoid arthritis or ankylosing spondylitis.
Treatment varies depending on the cause and other underlying conditions, but includes corticosteroids, eye drops, pain relief, treatment of disease, and prevention of vision loss. While the infection is treated, it is best to wear (eye glasses) rather than contact lenses.
The human eye is an amazing organ that most of us rely on every waking moment of the day. From morning till night, our vision allows us to see beautiful Florida sunsets, our beloved family and much more. Here at 20/20 Eyeglass Superstore, our main goal is to keep you up-to-date on everything related to eye care and eye health.
Here at 20/20 Eyeglass Superstore, we help thousands of Orlando, Melbourne City and Orange City residents purchase eyeglasses, contact lenses and sunglasses every day. We know purchasing new eyeglasses can be a challenge. Inexpensive reading glasses at the store are cheaper than prescription lenses. Is visiting an eye doctor and getting a prescription worth the extra cost?
To read the original article click here