Age Related Macular Degeneration

Healthy diet may lower eye disease risk

An analysis of recent high-quality research reveals that diet may affect individuals' risks related to the development and progression of age-related macular degeneration (AMD). The findings are published in Clinical & Experimental ...

Jul 05, 2018
popularity5 comments 0

Can psychological stress cause vision loss?

Persistent psychological stress, which is widely recognized as a consequence of vision loss, is also a major contributor to its development and progression, according to a study now published in the EPMA Journal, the official ...

Jun 20, 2018
popularity8 comments 0

Age-related macular degeneration (AMD) is a medical condition which usually affects older adults and results in a loss of vision in the center of the visual field (the macula) because of damage to the retina. It occurs in “dry” and “wet” forms. It is a major cause of blindness and visual impairment in older adults (>50 years). Macular degeneration can make it difficult or impossible to read or recognize faces, although enough peripheral vision remains to allow other activities of daily life.

Starting from the inside of the eye and going towards the back, the three main layers at the back of the eye are the retina, which contains the nerves; the choroid, which contains the blood supply; and the sclera, which is the white of the eye.

The macula is the central area of the retina, which provides the most detailed central vision.

In the dry (nonexudative) form, cellular debris called drusen accumulate between the retina and the choroid, and the retina can become detached. In the wet (exudative) form, which is more severe, blood vessels grow up from the choroid behind the retina, and the retina can also become detached. It can be treated with laser coagulation, and with medication that stops and sometimes reverses the growth of blood vessels.

Although some macular dystrophies affecting younger individuals are sometimes referred to as macular degeneration, the term generally refers to age-related macular degeneration (AMD or ARMD).

Age-related macular degeneration begins with characteristic yellow deposits (drusen) in the macula, between the retinal pigment epithelium and the underlying choroid. Most people with these early changes (referred to as age-related maculopathy) have good vision. People with drusen can go on to develop advanced AMD. The risk is considerably higher when the drusen are large and numerous and associated with disturbance in the pigmented cell layer under the macula. Recent research suggests that large and soft drusen are related to elevated cholesterol deposits and may respond to cholesterol-lowering agents.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

Study compares athlete and truck driver, identical twins

When it comes to being fit, are genes or lifestyle—nature or nurture—more important? Researchers at San Francisco State University, CSU Fullerton and Cal Poly, Pomona removed the nature part of the equation by studying ...

A peek into the interplay between sleep and wakefulness

Sleep is an autonomic process and is not always under our direct, voluntary control. Awake or asleep, we are basically under the regulation of two biological processes: sleep homeostasis, commonly known as 'sleep pressure', ...

Aggressive immune cells aggravate Parkinson's disease

Parkinson's disease, formerly referred to as "shaking palsy," is one of the most common disorders affecting movement and the nervous system. Medical researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) ...