Coloboma comes from the Greek word koloboma, meaning curtailed. It is used to describe a developmental defect of the eye occurring at embryonic stage. It can involve one or more ocular structures, including the cornea, iris, ciliary body, lens, retina, choroid and optic disc. It most commonly involves the inferonasal quadrant of the eye, and can be unilateral or bilateral, and is often associated with microphthalmia.2
This is a companion discussion topic for the original article at https://patient.info/doctor/congenital-disorders/coloboma