One of the widespread causes of reduced vision especially among the elderly people is cataract which can be cured. When a cataract develops, a clouding of the usually clear lens of the eye takes place.
There are numerous misleading notions about cataract. It is not a coating over the eye as is commonly believed. Contrary to popular perception it is not caused by overuse of the eye and is not infectious. Many people also believe that it is a cause of permanent blindness.
Indications of Cataract
General indications of cataract consist of a haziness of vision, sensitivity to light, deficiency in night vision, dual images in one eye, and the lack of ability to detect colors in a proper manner.
Causes of Cataract
- The most frequent kind of cataract occurs due to the aging of the eye.
- They are primarily detected around the age of 50-60.
- Cataract may be brought about by diabetes, a wound in the eye, if subjected to ultraviolet rays of the sun, prolonged use of steroid tablets, smoking, frequent consumption of alcohol and a family record of cataracts.
Detection of Cataract
The presence of a cataract can be spotted with the help of a complete eye examination by an ophthalmologist who may as well discover any other conditions that may be responsible for haziness of vision or other difficulties pertaining to the eyes.
Till date, no medication or diet has proved effective in checking the development of cataracts, and there is no medicine that can rectify a clouded lens.
The use of glasses may enhance the eyesight for those in the initial phases of cataract growth but the cataract is likely to worsen with the passage of time and hence this will only be a provisional solution to the cataract problem.
If not treated properly, the lens will ultimately become so clouded that it will practically be not possible to perceive any detail at all, though some light will at all times be noticeable.
Surgical elimination of the cataract is the only way by which the vision of an affected person can be improved or preserved. This entails substituting the affected lens with an artificial one:
Difficulties with other portions of the eye for instance cornea, retina, and optic nerve can lead to loss of vision and may impede chances of any recovery in vision after cataract surgery. If there is likelihood that there could be little chance of the vision improving, elimination of cataract may not be advisable. It is the ophthalmologist who is in a position to reveal the likely nature of visual improvement.
The time taken for the formation of cataract differs from individual to individual, and may even vary between the two eyes. The majority of age-related cataracts in individuals develop slowly with the passage of time.