1 - When we think of a prosthesis, we usually think of a prosthetic limb or maybe even a heart or organ; however, prosthetics can be made for any part of a body, even the eyes. The use of a prosthetic lens for one or both eyes has much the same basis as the use for a prosthetic in any other part of the body - the body part has a disfigurement or abnormality that can be modified or corrected with the use of a prosthetic.
The condition may be congenital; i.e., a defect present at birth, such as the absence of pigmentation in the iris. This condition doesn't just result in sensitivity to light - it can be startling to others and create embarrassment for the individual who has this condition...
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