Congenital and inherited visual impairment Flashcards
Most common:
What is optic nerve hypoplasia?
What you think the optic disc will look like on fundoscopy?
When does it tend to present?
A congenital disorder characterized by underdevelopment (hypoplasia) of the optic nerves.
Small - not always symmetrical
From birth but not noticed until child grows
Cortical visual impairment
What is it?
What may cause it?
A form of visual impairment that is caused by a brain problem rather than an eye problem.
Birth injury
Developmental defect
What 2 things which happen in adults can also happen congenitally? - C, G
Cataracts
Glaucoma
What can happen in premature babies?
Retinopathy
Aniridia:
What is it?
Why do they get photophobia and decreased sharpness of vision?
An eye disorder characterized by a complete or partial absence of the coloured part of the eye (the iris). These iris abnormalities may cause the pupils to be abnormal or misshapen.
Iris no longer able to accommodate and pupillary reflex rendered useless.
Albinism:
Why do they have a pale iris?
Why do they have a pale retina on fundoscopy?
Why do they have poor vision?
The condition reduces the colouring pigment in the iris
The condition reduces the colouring pigment in the retina as well.
Underdevelopment of the macula
What congenital infection can cause vision problems as well as a range of other problems?
Rubella
