1. I.Mann: “Developmental Abnormalities of the Eye” 1937 page396.
2. The Anatomy and Pathology of the Eye;Treacher Collins E.;The Lancet,1900
3. J. W.Ballantyne: “Antenatal Pathology and Hygiene” 1904 page406.
4. Cryptophthalmia;Coover D. H.;The Journal of the American Medical Association,1910
5. A Case of Cryptophthalmus and Partial Ablepharia;Elliot R. H.;The Indian Medical Gazette,1904