1. The ocular manifestations of trisomy 13–15;Keith;Trans. Ophthalmol. Soc. U.K.,1966
2. Ocular anomalies in trisomy 13–15;Hoepner;Am. J. Ophthalmol.,1972
3. Ocular pathology in a case of 13 trisomy;Rodrigues;J. Ped. Ophthalmol.,1973
4. Ocular pathology of trisomy 13;Ginsberg;Ann. Ophthalmol.,1974
5. Developmental Abnormalities of the Eye;Mann,1937