Cataract Types: Hypermature Morgagnian Cataract

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What is the characteristic of a Morgagnian type of cataract?

Posterior cortical opacity with poor visual acuity in bright light

Rapid breakdown of lens proteins resulting in rapid increase in osmolarity

Liquefaction of the cortex in a milky fluid in which the nucleus sinks by gravity (correct)

Polychromatic, needle-like opacities

Which type of cataract is associated with a gradual painless diminution of vision?

Intumescent cortical cataract (correct)

Christmas tree cataract

Hypermature cataract

Nuclear Cupuliform

What is the clinical feature of a posterior subcapsular cataract?

Shift to myopia

Interferes more with far vision

Near vision affection (correct)

Glare from intense light source

What is the result of excessive nuclear sclerosis and yellowing in a cataract?

Central opacity Signup and view all the answers

Which symptom is associated with a cataract?

Uniocular diplopia Signup and view all the answers

What is the characteristic of an Intumescent cortical cataract?

Rapid breakdown of lens proteins resulting in rapid increase in osmolarity Signup and view all the answers

What is the characteristic ofSenile Cataract opacification?

It is a result of degeneration of the lens fibers with hydration and opacification Signup and view all the answers

What can be seen in the pre-cataractous changes stage of Senile Cataract?

Lamellar separation and water vacuoles Signup and view all the answers

What is the characteristic of the immature stage of Senile Cataract?

The whole cortex becomes opacified, except a zone of superficial cortex under the lens capsule Signup and view all the answers

What is the vision in the immature stage of Senile Cataract?

It is as high as 6/18 or even 6/12 Signup and view all the answers

What is seen in the mature stage of Senile Cataract?

The entire cortex from the capsule to the nucleus becomes opaque white Signup and view all the answers

What is the characteristic of Senile Cataract regarding the laterality?

It is bilateral, but unsymmetrical Signup and view all the answers

What is the main cause of nuclear cataract?

Error of metabolism or toxins from the mother Signup and view all the answers

What is the characteristic of lamellar cataract?

A layer of opacification involving the foetal nucleus, with arcuate opacities all around its equator Signup and view all the answers

What is the characteristic of coronary cataract?

Club-shaped opacities near the periphery of the lens with their broad ends towards the centre Signup and view all the answers

What is the characteristic of anterior polar cataract?

A delay in the disappearance of the lens stalk in both the lens capsule and subcapsular cortex Signup and view all the answers

What is the characteristic of blue dot cataract?

Multiple small bluish dots scattered all over the lens Signup and view all the answers

What is the characteristic of posterior polar cataract?

A delay in the disappearance of the hyaloid artery Signup and view all the answers

What is the effect of posterior polar cataract on visual acuity?

It has a greater effect on visual acuity due to its larger size and closer location to the nodal point of the eye Signup and view all the answers

What is the characteristic of membranous cataract?

A sheet-like appearance with the anterior and posterior capsules fused together Signup and view all the answers

What is the cause of maternal infection with rubella virus?

Maternal infection with rubella virus during the first trimester Signup and view all the answers

What is the characteristic of aniridia?

Complete or partial absence of the iris Signup and view all the answers