Study for the Visual Impairment Education Certification Test. Explore multiple choice questions, with hints and explanations for each. Prepare thoroughly!

Multiple Choice

Coloboma refers to:

Coloboma is a congenital defect where there is a gap or cleft in part of the eye caused by incomplete closure of the embryonic fissure during development. This gap can involve the iris, retina, choroid, or optic nerve, and the impact on vision depends on where the gap is and how large it is. It’s not retinal detachment (which is a separation of retinal layers), not clouding of the cornea (corneal opacity), and not increased intraocular pressure (glaucoma). So the defining feature is a gap or cleft in ocular tissue.

Coloboma is a congenital defect where there is a gap or cleft in part of the eye caused by incomplete closure of the embryonic fissure during development. This gap can involve the iris, retina, choroid, or optic nerve, and the impact on vision depends on where the gap is and how large it is. It’s not retinal detachment (which is a separation of retinal layers), not clouding of the cornea (corneal opacity), and not increased intraocular pressure (glaucoma). So the defining feature is a gap or cleft in ocular tissue.