Search results
Results from the WOW.Com Content Network
Photostress recovery time (PSRT) is the time taken for visual acuity to return to normal levels after the retina has been bleached by a bright light source. Photostress recovery time measurement procedure is known as photostress test. Normal recovery time is about 15–30 seconds. [1]
Macular degeneration, also known as age-related macular degeneration (AMD or ARMD), is a medical condition which may result in blurred or no vision in the center of the visual field. [1] Early on there are often no symptoms. [1] Over time, however, some people experience a gradual worsening of vision that may affect one or both eyes. [1]
Macular degeneration: Macular degeneration cause loss of central vision, blurred vision (especially while reading), metamorphopsia (seeing straight lines as wavy), and colors appearing faded. [11] Macular degeneration is the third main cause of blindness worldwide, and is the main cause of blindness in industrialised countries. [12]
The macula lets us see what’s directly in front of us, so most commonly only the center of the vision is affected by macular degeneration. Early-stage macular degeneration affects about 1 in ...
A person with photic retinopathy may notice an impairment in their vision, for example a spot that does not go away after a reasonable recovery time, or blurring. They may also have eye pain or headaches. Vision impairment is usually in both eyes, but can be in just one. Impairment of a person with 20/20 vision usually ends up being about 20/40 ...
Causes and risk factors of VTS include age, a high degree of myopia or nearsightedness, macular degeneration, diabetic retinopathy, macular edema, and occlusion of the retinal vein. [3] Treatment for VTS depends on the severity and how much vision is affected. For some people, regular monitoring may be suggested ("wait and see approach").
[3] [4] Increased outflow or aqueous loss may occur following a glaucoma surgery, trauma, post-surgical wound leak from the eye, cyclodialysis cleft, tractional ciliary body detachment or retinal detachment. [3] Use of anti fibrosis drugs like mitomycin C during glaucoma surgery will increase the risk of hypotony maculopathy development. [2]
When the retina detaches, common symptoms include seeing floaters, flashing lights, a dark shadow in vision, and sudden blurry vision. [ 1 ] [ 3 ] The most common type of retinal detachment is rhegmatogenous, which occurs when a tear or hole in the retina lets fluid from the center of the eye get behind it, causing the retina to pull away.