Implantable contact lens (Staar Surgical, Switzerland) is another tool that is being used to help patients of keratoconus with large refractive errors.
This has shown itself to be a useful method in helping patients with advanced keratoconus and high myopia with cylindrical errors (usually in excess of -10 Diopters with upto -6Diopters cylinder)
It helps this class of patients improve the uncorrected visual acuity and allows use fo glasses for the small residual errors.
However, it may not take away all the visual deficits. As we now understand, it can not take care of the higher order aberrations and thus the quality of vision still remains less than ideal. However, it a great step from not being able to do anything at all.
Sunday, April 5, 2009
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