RETROSPECTIVE ANALYSIS OF 754 HEXAGONAL KERATOTOMIES

Closed and open hexagonal keratotomies were performed on 686 eyes for primary hyperopia, 62 eyes for radial keratotomy overcorrection, and 6 eyes for intraocular lens miscalculation. Follow-up ranged from 1 mon th to nearly 7 years, averaging 21 months. Overall, hyperopia was redu ced by 2.75 D and astigmatism was increased by 0.50 D. In the primary hyperopia group, a smaller hexagon was associated with a greater reduc tion in hyperopia; for eyes with 2-3 D of preoperative hyperopia, unai ded vision was improved in 90%. In the radial keratotomy overcorrectio n group, astigmatism was increased by more that 3-D in 7%. In the intr aocular lens miscalculation group, all patients obtained better vision . The best candidates for hexagonal keratotomy were anisometropic pseu dophakes with 3-4 D of hyperopia in the eye that suffered from intraoc ular lens miscalculation in which lens exchange was considered to be t oo risky.