MRCP UK EXAMINATIONS

NEUROLOGY

OCULAR PALSIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Failure to close the choroidal fissure is the cause of:
A
a) Atypical coloboma
B
(b) Typical coloboma
C
c) Aniridia
D
None of the above
Explanation: 

Detailed explanation-1: -Coloboma: A coloboma is a hole or defect in either the eyelid, cornea, iris, lens, ciliary body, zonules, retina, choroid, or optic nerve as a result of incomplete closure of the optic fissure. [18] The frequency is 10 to 20 cases per 100000 infants.

Detailed explanation-2: -Coloboma is a defect in the morphogenesis of the eye that is a consequence of failure of choroid fissure fusion. It is among the most common congenital defects in humans and can significantly impact vision.

Detailed explanation-3: -A coloboma is an area of missing tissue in your eye. Colobomas are present in a person’s eye when they’re born. They can affect one or both eyes. The most recognizable and common colobomas affect your iris (the colored part of your eye) and cause your pupil (the dark center of your eye) to have a keyhole shape.

There is 1 question to complete.