For the band with this name, see Cataract (band). For the geographical feature, see Types of waterfalls. Human eye cross-sectional view. Courtesy NIH National Eye Institute Normal vision. Courtesy NIH National Eye Institute The same view with a cataract. Cataract in Human Eye- Magnified view seen on examination with a slit lamp In ophthalmology, a cataract is any opacity which develops in the crystalline lens of the eye or in its envelope. The name derives from the ...
Wikipedia - [full article]

From the WEST  scientific·clinical

From the EAST  traditional·alternative

What to Look For in a Pair of Sunglasses
... by Michelle Meadows As you slather on sunscreen to protect your skin this summer, don't forget sunglasses to protect your eyes. The same harmful rays that damage skin can also increase your risk o...
Source: U.S. Food and Drug Administration