The age-related cataract refers to the clouding of the lens which starts in the elderly. With increasing of age, the morbidity is higher. This is the common type of cataract. The disease of cataract is the result of various factors, such as free radical damage, lack of nutrients and chemicals, use of antibiotics, metabolic disorder of glucose and galactose, damage of lipid peroxidation, etc. In addition, other factors such as aging and genetic are also important aspects.
There are several types of cataracts, Age-related Cataract, Secondary Cataracts ,Traumatic Cataract, Congenital Cataract and Radiation Cataract. Age related cataracts are more common in old people. Age-related cataracts usually develop from protein clumpings. The lens consists mostly of water and protein. When the protein clumps up, it clouds the lens and reduces the light that reaches the retina. The clouding may become severe enough to cause blurred vision over time.