This is called Second Sight and indicates the formation of a Cataract.
A cataract is a clouding of the lens in the eye that affects vision. In a normal eye, light passes throughthe transparent lens to the retina.
By age 60, more than half of all Indianpatients have either developed a cataract or have had cataract surgery. Theretina is the light- sensitive tissue at the back of the eye.
The lens is a clear part of the eye that helps to focus light, or an image, on the retina.
Once it reaches the retina, light is changed intoelectrical signals that are sent via the optic nerve the brain.
The lens must be clearfor the retina to receive a sharp image.
If the lens is cloudy from a cataract, theimage you see will be blurred.As it progresses reading vision can suffer along with a change in spectacle number.People who were forced to wear readingglasses will find that they can go without them.Cataracts also can develop in people who have other health problems, such as diabetes. Drops are placed in your eyes to widen, or dilate, the pupils.Subsequently with a indirect ophthalmoscope which enlarges the retinal image, your retina and optic nerves are assessed for signs of damage and other eye problems.The doctor will test your eye pressure with an airpuff pneumotonometer.