Table 2. Comparison of visual acuity and refractive errors of Group 1 (deteriorated patients) vs Group 2 (patients with no deterioration).

	Group 1: No Deterioration in Control (n = 77)	Group 2: Deteriorated in Control (n = 40)	P−value
Right eye visual acuity (logMAR) at initial	0.014	0.033	0.257
Right eye spherical equivalent at initial (diopters)	−1.25	−1.32	0.886
Right eye spherical equivalent change over 3 years (diopters)	−0.63	−0.63	0.978
Left eye visual acuity (logMAR) at initial	0.012	0.024	0.462
Left eye spherical equivalent at initial (diopters)	−1.43	−1.23	0.694
Left eye spherical equivalent change over 3 years (diopters)	−0.57	−0.74	0.635

Comparisons were made by 2-tailed independent T-test.