1. Duke-Elder. Anomalies of the lens. In: Congenital deformities, normal and abnormal development (System of ophthalmology, Vol. 3). London: Henry Kimpton, 1964: 706–708.
2. Scott L, Creig H. Lens. In: Taylor D, ed. Pediatric Ophthalmology. Boston: Blackwell, 1990: 300.
3. Spencer HW. Ophthalmic pathology: An atlas and textbook. Philadelphia: Saunders, 1985: 433–434.
4. Hovland KR, Schepens CL, Freeman HM. Developmental giant retinal tears associated with lens coloboma. Arch Ophthalmol 1968; 80: 325–31.
5. Scheie HG, Albert DM. Adler's textbook of ophthalmology. Philadelphia: Saunders, 1969: 74–83.