Title: Effect of Different Corneal Refractive Surgery on Low Contrast Visual Acuity
Abstract: Objective To compare the effect of Q-value guided customized LASIK(Q-LASIK) and standardized LASIK(S-LASIK) on the low contrast visual acuity(LCVA). Methods Seventy-one eyes of 37 patients were treated with S-LASIK and 62 eyes of 32 patients were treated with Q-LASIK.Preoperation and 1 week,1 month and 3 months postoperation,visual acuity,refractions,Q-value,spherical aberration(SA) and LCVA were evaluated in all cases. Results (1) In the S-LASIK group,the LCVA of the low,moderate and high myopia groups increased significantly at 1 week after surgery;as for the low myopia group,the LCVA recovered to the preoperative level at 1 month after surgery and the LCVA of the moderate myopia group recovered to the preoperative level at 3 months after surgery.(2) In the Q-LASIK group,the LCVA after surgery appeared no differences at different time points compared to that evaluated before surgery.(3) In Q3 group,the ΔLCVA,ΔQ and ΔSA were significantly lower than that in S-LASIK group at 3 months after surgery(P0.05).(4) The incidence of vision quality's decrement in Q-LASIK group at different time points after surgery was lower than that in S-LASIK group(P0.05). Conclusions For the high myopia group,Q-LASIK has less effects on scotopic low contrast visual acuity.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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