Dr William Boothe

overcorrection - A complication of PRK where the expected amount of correction is more than desired. See glossary entry "regression". Overcorrection occurs in the occasional person where healing occurs less vigorously than predicted by the laser computer program, and the planned treatment "overcorrection" persists. Overcorrection can also occur in the uncommon event that the laser is improperly calibrated.

DR BOOTHE

Buttonhole Flap - A LASIK problem where the microkeratome cuts through the top surface of the cornea while creating the corneal flap, while lifting it, or while folding it back. It can be caused by loss of the suction which holds the microkeratome against the cornea, or inadequate suction, or by poor matching of microkeratome to patient. If possible, the flap is replaced, and no further surgery is attempted for several months, after it has healed. Sometimes it can cause scarring which impairs vision, but usually there are no permanent ill effects.

Cataract - An opaque or cloudy area that forms in the eye’s lens, impeding vision. They tend to occur with aging, but can also be caused by trauma. Cataracts are treated by the lens being removed and an artificial lens implanted. See intraocular lens.

DR BOOTHE

: Visual Acuity is simply the clearness of vision or the ability to distinguish details and shapes or objects.

Vitreous Humor is the transparent, colorless mass of gel that lies behind the lens and in front of the retina and fills the center of the eyeball.