HASHEM S. ALMARZOUKI, et al. “Unilateral Optic Nerve Aplasia (ONA) in an Otherwise Healthy Child: A Case Report and Literature Review”. International Journal of Pharma and Bio Sciences, vol. 9, no. 1, Mar. 2018, pp. 151-4, doi:10.22376/ijpbs.2018.9.1.b151-154.