Medical contact lens
The lens for keratoplastic surgery, irregular corneal and lasik
The Versa contact lens has a flatter central curve on the inside than the peripheral curve. The peripheral curve is similar to a ‘standard’ soft lens of 8.60. With a diameter of 14.50 mm it would fit most eyes, unless cornea topografic or the K-values indicate that the peripheral part is steeper or flatter than normal.
The outside of the lens has an aspherical optical centre section to correct spherical aberration and a thinner peripheral curve to maximize oxygen permeability on the cornea. When an irregular cornea is detected, a suitable IT factor can be selected to neutralize the irregularity. An IT factor can be ordered in central thickness 1, 2 or 3. In case of residual astigmatism, an diagnostic lens can be ordered.