Higher order aberrations and relative risk of symptoms after LASIK.

Purpose: To understand what level of higher order aberrations increases the relative risk of visual symptoms in patients after myopic LASIK.

Methods: This study was a retrospective comparative analysis of 103 eyes of 62 patients divided in two groups, matched for age, gender, pupil size, and spherical equivalent refraction. The symptomatic group comprised 36 eyes of 24 patients after conventional LASIK with different laser systems evaluated in our referral clinic and the asymptomatic control group consisted of 67 eyes of 38 patients following LADARVision CustomCornea wavefront LASIK.

Reduced best spectacle-corrected visual acuity from inserting a thicker Intacs above and thinner Intacs below in keratoconus.

Purpose: To report a case of decreased best spectacle-corrected visual acuity (BSCVA) 2 months after Intacs implantation.

Methods: A 33-year-old woman with keratoconus and contact lens intolerance underwent Intacs surgery in the left eye at another institution. Two segments were used--a thinner one (0.

Effect of inferior-segment Intacs with and without C3-R on keratoconus.

Purpose: To determine whether corneal collagen cross-linking with riboflavin (C3-R) augments the effect of inferior-segment Intacs (Addition Technology) in the treatment of keratoconus.

Setting: Private practice, Beverly Hills, California, USA.

Methods: A retrospective nonrandomized comparative case series comprised 12 eyes of 9 patients who had inferior-segment Intacs placement without C3-R (Intacs-only group) and 13 eyes of 12 patients who had inferior-segment Intacs placement combined with C3-R (Intacs with C3-R group).