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CONTRAST SENSITIVITY COMPARISON BETWEEN TWO THIN LENSES, THINOPTX® VERSUS ACRISMART®, AFTER MICRO INCISION CATARACT SURGERY

Purpose: Contrast sensitivity (CS) evaluation by SV–1000E chart in all spatial frequencies after micro incision cataract surgery (MICS) and its comparison between two thin lenses after optical correction in natural and glare conditions Methods: In this cross sectional study, 100 eyes having MICS with Dodick ARC phacolaser system were evaluated. 50 Thinoptx lenses and 50 Acrismart lenses were randomly implanted in the eyes. Uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), refractive error and CS, in all spatial frequencies were measured three months after surgery. CSV-1000E chart with or without glare test was used for CS evaluation. Normalized measures of CS were compared between two thin lenses with Student’s T-test. Results: CS profile was within the normal range in 52% of eyes and 48% of eyes had CS in lower than the normal range. The differences of CS in lower spatial frequencies [3 and 6 cycle/degree (c/d)] and higher spatial frequencies (12 and 18 c/d) between two lenses were not significant (P<0.449 and P<0.835, respectively). Conclusion: After implantation of two lenses by MICS, the CS in all spatial frequencies was similar.