A congenital malformation of the eye causing defects in the lens, iris, or retina.
- ‘Complete coloboma is when all of the structures of the eye are involved; these are the choroid, the retina, the optic disk, the ciliary body, the macular and the iris.’
- ‘Depending on the extent and location of the coloboma, there may be decreased visual acuity, nystagmus, strabismus, photophobia, and a loss of visual fields.’
- ‘Newborns with aniridia or coloboma should have a formal eye examination.’
Mid 19th century: modern Latin, from Greek kolobōma part removed in mutilation from kolobos cut short.