Search results
Results from the WOW.Com Content Network
Cataracts cause 51% of all cases of blindnessand 33% of visual impairmentworldwide. [3][9] Cataracts are most commonly due to agingbut may also occur due to traumaor radiation exposure, be present from birth, or occur following eye surgery for other problems. [1][4]Risk factors include diabetes, longstanding use of corticosteroidmedication ...
Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [ 4][ 10] Cataracts usually develop slowly and can affect one or both eyes. [ 4]
Blindness in animals can be caused be the result of environmental adaptations over time, or due to various conditions of the eyes. [ 1] Many blind species have been able to adapt, [ 2] navigate and survive in their environment by relying on their other senses. Some species are born without eyes such as the kauaʻi cave wolf spider, olm and the ...
A dog with cataracts. Canine cataracts are a prevalent cause of visual loss in dogs, frequently resulting in blindness. Cataracts typically occur when proteins break down in the lens of a dog's eye and clump together, obstructing the passage of light. [1] [2] There are several reasons cataracts may occur in dogs, such as heredity, trauma, aging ...
Although treatment for galactosemic infants is a strict galactose-free diet, endogenous (internal) production of galactose can cause symptoms such as long-term morbidity, presenile development of cataract, renal failure, cirrhosis, and cognitive, neurologic, and female reproductive complications. Galactosemia used to be confused with diabetes ...
Researchers have recently developed a new drug that will ultimately shrink down and dissolve cataracts -- the leading cause of human blindness that affects tens of millions of people worldwide.
Cataract surgery was first mentioned in the Babylonian code of Hammurabi 1750 BCE. [12] The earliest known depiction of cataract surgery is on a statue from the Fifth Dynasty of Egypt (2467–2457 BCE ). [12] According to Francisco J Ascaso et al, a "relief painting from tomb number TT 217 in a worker settlement in Deir el-Medina " shows "the ...
Congenital cataracts are a lens opacity that is present at birth. Congenital cataracts occur in a broad range of severity. Some lens opacities do not progress and are visually insignificant, others can produce profound visual impairment. Congenital cataracts may be unilateral or bilateral. They can be classified by morphology, presumed or ...