Also Can you plz tell me a natural solution for it...
Of course you need to see an ophthalmologist for an eye exam and a definitive diagnosis but the most common cause by far is what is called "corneal arcus" and its an aging change of the cornea like our hair turning grey and wrinkles in the skin. It is normal after 60. When it occurs in people younger than that blood levels of cholesterol should be measured because high levels of that blood lipid (fat) can cause corneal arcus at young age (called arcus juvenalis).
No one is fond of aging changes in the body no matter where they occur. Such is the lot of humankind that we cannot stop the sands of time.
Thankyou for the reply..
But I don't have brown colour in dark manner.. The colour is really light and faded..
And it is not around my eyeball ..
It is just at the extremities of the eyes..
Then its not possible to generalize about that description and I suggest you see an Eye MD ophthalmologist. Ask your family MD to refer you or if you live in USA find one near you at www.geteyesmart.org