| Visual Function after Q-value adjusted LASIK
Qin-Mei Wang1, Tian-Tian Ye1, Zhong-Hai Sun2
1. Eye Hospital, WenZhou Medical College, WenZhou, ZheJiang, 325027
2. Eye Hospital, JinHua, ZheJiang, 321000
Purpose: to investigate the visual function after Q-value adjusted LASIK (laser in situ keratomileusis) .
Methods: Contrast sensitivity, UCVA (uncorrected visual acuity), glare and corneal asphericity were taken as four parameters of visual function. Thirty eight patients (76 eyes), with mean spherical equivalent of -5.13Ds/-0.30Dc, were enrolled for the operation by Q-value adjusted LASIK between 24th Jan. 2005 and 18th Mar. 2005. The visual function evaluation were done at the 50 days post－op follow-up visit. All the surgeries were operated by one doctor with ALLEGRETTO WAVE Eye-Q excimer laser.
Results: There was no statistically significant difference (n=74, p=0.869) between the average of pre-op BSCVA (4.995) and that of post-op UCVA (4.997) monitored one day after operation. The change of corneal asphericity after Q-value adjusted LASIK (C12=0.000574) was almost 3.6 times of that of pre-op (C12=0.000209). Contrast sensitivity with and without glare after Q-value adjusted LASIK is better than that of pre-surgery (OD with glare p=0.000, without glare p=0.001; OS with glare p=0.001, without glare p=0.000).
Conclusion: Following Q-value adjusted LASIK (laser in situ keratomileusis) , the contrast sensitivity with and without glare is improved, and the UCVA (uncorrected visual acuity) remains good. Better asphericity of cornea outcomes is likely to be accounted as the reason for these improvement.
Key words: Q-value adjusted LASIK, asphericity of cornea
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