Table 5. Visual acuity success rate of three groups at various follow-up visits.

Groups	Initial lens wearing	1wk	1mo	3mo
Group A	100.00 (206/206)	100.00 (207/207)	100.00 (193/193)	100.00 (180/180)
Group B	99.28 (137/138)	98.58 (139/141)	99.23 (129/130)	99.14 (115/116)
Group C	94.44 (34/36)	97.22 (35/36)	96.97 (32/33)	100.00 (30/30)
H	12.056	4.209	4.777	1.810
P	0.002	0.122	0.092	0.404

Group A: Cylinder degree range of -0.75 to -0.50 D; Group B: Cylinder degree range of -1.75 to -1.00 D; Group C: Cylinder degree ≤-2.00 D; H: Test statistics for Kruskal-Wallis H test.