Ophthalmology

New cell models for ocular drug discovery

Researchers at the University of Eastern Finland have developed two new cell models that can open up new avenues for ocular drug discovery. The new cell models are continuously growing retinal pigment epithelial cells, which ...

Ophthalmology

Suitable marker for retina morphology across species

Outer retinal band (ORB) integrity and outer retinal thickness as they appear on OCT (Optical Coherence Tomography) have been studied extensively due to their diagnostic value. They are predictive of visual outcome in many ...

Ophthalmology

VR game gives users 'eyes-on' experience with vision loss

In a virtual world, a knight in full armour sits in front of me, expectantly waiting for me to deal them some playing cards. As the game progresses, a large black spot grows in the middle of my vision. I try to pick up the ...

Medical research

Zebrafish aid effort to regenerate damaged retinas

The tiny zebrafish may hold the secret to regenerating damaged retinas in humans, Vanderbilt University researchers reported last week in the journal Cell Reports.

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Macular degeneration

Macular degeneration is a medical condition usually of older adults that 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 in the elderly (>50 years)[citation needed]. 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.

The inner layer of the eye is the retina, which contains nerves that communicate sight, and behind the retina is the choroid, which contains the blood supply to the retina. 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).

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