Abstract This is the first report of the estimation of the visual response of premature infants when tested by optokinetic nystagmus. Heretofore, visual acuity has not been determined for infants under the weight of five pounds (2,267.96 gm). All of the infants in this report were premature and less than five pounds in weight. In a previous study,1 Gorman and associates used the technique of induced optokinetic nystagmus (OKN) to estimate newborn visual acuity. Reinecke and Cogan2 found that there was a close correlation between OKN and Snellen visual acuity ratings. Other investigations3-7 have discussed this subject in their determinations of visual acuity (Table 1). Method A total of 44 infants under care in the premature nursery at Children's Hospital of Michigan were examined. Only those infants whose temperature, pulse, and respirations were stable were chosen for examination. Infants' weights varied from 2 lbs 7 oz (1,105.63 gm) References 1. Gorman, J.J.; Cogan, D.G.; and Gellis, S.S.: An Apparatus for Grading the Visual Acuity of Infants on the Basis of Opticokinetic Nystagmus , Pediatrics 19:1088-1092, 1957. 2. Reinecke, R.D., and Cogan, D.G.: Standardization of Objective Visual Acuity Measurements: Optokinetic Nystagmus vs Snellen Acuity , Arch Ophthal 60:418-421, 1958.Crossref 3. Dayton, G.O., et al: Developmental Study of Coordinated Eye Movements in the Human Infant , Arch Ophthal 71:865-875, 1964.Crossref 4. Diskan, S.M.: Eye Problems in Children , Postgrad Med 34:168-178, 1963. 5. Hill, K., and Stocks, J.F.: Assessment of Vision of the Preliterate Child , J Maine Med Assoc 53:30-33, 1962. 6. Schwarting, B.H.: Testing Infant's Vision , Amer J Ophthal 38:714-715, 1954. 7. Wolin, L.R., and Dillman, A.: Objective Measurement of Visual Acuity Using OKN and Electromyography , Arch Ophthal 71:822-826, 1964.Crossref 8. Hosaka, A.: The Ocular Findings in the Premature Infant, Especially on the Premature Signs , Jap J Ophthal 7:77-81, 1963. 9. Chace, R.R., and Merritt, K.K.: Ocular Findings in the Newborn , Arch Ophthal 44:236-242, 1950.Crossref 10. Tyner, G.S.: Ophthalmoscopic Findings in Normal Premature Infants , Arch Ophthal 45:627, 1951.Crossref
Archives of Ophthalmology – American Medical Association
Published: May 1, 1966
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