TREATMENT OF UNILATERAL CATARACT WITH CONTACT GLASSES

Abstract

As the name implies, a contact glass is a glass that is worn in contact with the anterior segment of the eyeball, touching the sclera, but leaving a space in front of the cornea which is filled with physiologic solution of sodium chloride. Because of their position while being worn, that is, under the lids and against the eyeball, thus eliminating the necessity of "frames," these glasses are advertised as "invisible spectacles." HISTORICAL REVIEW This type of glass is not an innovation but dates back to 1878, when Rühlmann stimulated interest in the treatment of conical cornea by requesting that a glass be made with a hyperbolic curve. Nine years later, or forty-six years ago, Fick made the first contact glass. There have been two methods of manufacturing contact glass, by grinding and by blowing. There are advantages and disadvantages in both methods, the ground glass being more accurate and