Uncorrected visual acuity after intacs and after lasik in myopia between -1.0D and -4.5D

To compare the uncorrected visual acuity [UCVA] outcome of patients having laser in situ keratomileusis [LASIK] versus intracorneal ring segments [Intacs] at 1 day, 1 week, 1, 3 and 6 months postoperatively. Forty eyes of 20 patients were compared; 20 eyes of 10 patients with Intacs and 20 eyes of 10 patients having LASIK. Patients' visual acuity was measured at 1 day, 1 week, 1, 3 and 6 months, UCVA was reported and compared. The eyes excluded were that did not have complete follow-up or were treated for monovision. Intacs that were removed or exchanged were eliminated as well as any LASIK eye that had a complication that could affect tile visual acuity. At the 20/40 and 20/20 or better UCVA level, both Intacs and LASIK eyes had similar outcome. However by the 6[th] month more than half of Intacs patients [65%] achieved 20/16 or better vision as compared to only 5% of LA SIK patients. Both Intacs and LASIK are effective and safe for myopic patients between -1.0D and -4.5D. In this study Intacs showed superior UCVA outcome at the 20/16 or better level, compared to LASIK patients. Intacs have superiority in their ability to give better than 20/20 outcomes

Lasik enhancement-efficacy and safety

The purpose of this study is to determine the safety and efficacy of laser in situ keratoinileusis [LASIK] enhancement and to present the outcomes. Retrospective non-comparative consecutive case series was done on 20 eyes of 16 patients underwent LASIK surgery for refractive error using the excimer laser [Nidek EC-5000, Japan]. Only re-treatments for residual refractive error were included. Of the total cohort studied 1000 eyes done over a 2 years period, 20 eyes [2%] were subjected to LASIK enhancement. The average length of time between initial treatment and enhancement was 8.6 months; 90% of retreatments took place within the first year, only 2 eyes [10%] between 1-2 years All of the retreatments were accomplished using a manual flap lift approach; none of the eyes required repeated microkeratome cut. Before retreatment, average BCVA was 0.7 [20/30] and after retreatment was 0.705 [20/30] [p > 0.05] statistically non-significant. The MRSE pre-enhancement for myopic cases was -2.25 D and decreased significantly after enhancement to -0.4 D, while for the hyperopic MRSE was +1.75 D pre-enhancement and decreased significantly to +0.25 D after enhancement. Higher initial oorrections and residual astigmatism were associated with a significantly higher rate of retreatments. LASIK enhancements surgery can be performed safely and effectively by lifting the flap