Poor vision that cannot be corrected fully with glasses may indicate a condition known as conical cornea or keratoconus.
A rare condition, keratoconus primarily affects people in their early 20′s. With keratoconus, the cornea, the “clear window” at the front of the eye, may become thin and bow outwards. It’s this irregular distortion of the cornea that makes vision correction with glasses less than optimal. For this reason other means of correcting vision are often necessary.
Vision Correction With Rigid Gas Permeable Lenses
Mild to moderate keratoconus is best corrected with rigid gas permeable contact lenses, which provide a smooth surface in front of the cornea, making clear vision possible. Because the lens is rigid, the tears between the lens and the cornea form a ‘liquid lens,’ which smoothes the irregularities of the cornea, and makes clear vision possible again. Soft lenses, which ‘wrap’ onto the cornea and take up its shape much more closely than rigid lenses, are less successful at correcting keratoconus.
For more information please schedule an appointment with your eye care provider, and we will be in touch with you shortly.