Agreement between grating acuity at age one year and Snellen acuity at age 5,5 years in the preterm child. - Dobson,V.; Quinn,G.E.; Siatowski,R.M.; Baker,J.D.; Hardy,R.J.; Reynolds,J.D.; Trese,M.T.; Tung,B. (Invest Ophthalmol Vis Sci, 1999)