Cataract is opacification or clouding of the lens of the eye. Cataracts are very common in older people. Cataract can occur in either or both eyes. Many people think that cataract is a film growing over the eye, which is incorrect.








eye with clear lens           eye with cataractous lens




Types of Cataract:

Congenital Cataract: It is the cataract which is present at birth. Also known as infantile cataract if it develops in the first 6 months after birth.

Traumatic Cataract: Cataract due to injury.

Senile Cataract: Cataract occurring gradually in old age and marked by increased opacity of the lens followed by its softening and shrinkage.

Secondary Cataract: Cataract that develops secondary to another disease or surgery for example diabetes.


Symptoms of Cataract


Ø    Cloudy or foggy vision

Ø    Blurred or distorted vision

Ø    Changes in color vision

Ø    Frequent changes in eye glass or contact lens

Ø    Poor night vision (especially affected by headlights)

Ø    Progressive loss of vision

Ø    Haloes or glare around lights

Ø    Double vision

Ø    Loss of contrast



How is a cataract detected?

Cataract is detected through a comprehensive eye examination that includes:


Visual Acuity test: it measures how well you see at various distances.

Dilated eye examination: it gives better view to back of the eye, i.e. lens and retina.


Treatment of Cataract:

Surgical removal of cataract is the only option available. Removal cataractous lens alone will not give good vision. Intra ocular lens implantation should accompany the procedure.



removal of cataractous lens   removal of cataractous lens   intraocular lens implantation