Cataract is one of the various diseases that can affect our vision.
The eyes have a natural lens made up mostly of water and protein. This lens is found behind the pupil and the iris and is very similar to the lens of a camera, because it focuses light onto the retina. It is also what allows the eye to adjust and focus so you can see things clearly at all distances. A cataract is an opacity, or clouding, of the crystalline lens of the eye that reduces visual function.
Studies have determined that there are three different types of cataracts. They are as follows:
Nuclear Cataract – This type is usually caused by ageing.
Cortical Cataract – This type is usually caused by being diabetic.
Subcapsular Cataract – It is usually found in people with retinitis pigmentosa, diabetes and farsightedness. It sometimes occurs in people that have taken very high doses of steroids as well.
Cataracts normally develop gradually over a long period of time. This is one reason it may be difficult to notice the symptoms at first. However, there are several symptoms that are associated with cataracts, including:
Altered color vision
Diminished side vision or night vision
Blurry or hazy vision
Lights seem to glare or be extra bright
Keep in mind that the symptoms you experience will depend on the type of cataract you have.
Cataracts can be prevented in some cases by:
using eye protection in hazardous situations
promptly treating ocular inflammation
The treatment can be non-surgical or surgical.
Non-surgical: It includes pupil-dilating eye drops that allow the patient to see around the cloudy part of the lens.
Surgical: Cataract surgery is a simple, painless procedure, and can significantly improve a patient’s vision. The cloudy lens is replaced with a clear, artificial lens.
In rare cases some complications may occur as a result of cataract. These include glaucoma and inflammation.
To sum up, a person should take great care of their eyes. Regular examinations of the eyes can help prevent the deterioration of your sight.