• Serial measures (range, two to eight) of preferential-looking grating acuities of 52 infants with retinopathy of prematurity were made. Group 1 patients (n = 11), who had little or no macular displacement, had normal preferential-looking acuity except for two who had mild acuity deficits. None of the group 2 patients (n = 12), who had dragged maculas, ever had normal acuity. On the average, their acuities, which ranged from 1 to 6 octaves less than normal, gradually increased at a rate not significantly different from normal. Group 3 patients (n = 29), who had undergone open-sky vitrectomy, had significantly lower acuity despite reattachment of the retina.
Katsumi O, Mehta MC, Matsui Y, Tetsuka H, Hirose T. Development of Vision in Retinopathy of Prematurity. Arch Ophthalmol. 1991;109(10):1394-1398. doi:10.1001/archopht.1991.01080100074045