Cataracts

Question 1

In ophthalmology what does Phakic mean?

Answer 1

When you have your natural lens

Question 2

What does Aphakik mean?

Answer 2

When a cataract is removed but is not replaced

Question 3

What is a Pseudophakic eye?

Answer 3

When a cataract is replaced by an artificial lens

Question 4

What is the most common type of cataract?

Answer 4

Nuclear sclerotic cataracts

Question 5

What type of cataract can occur in people who are on steroids or who have diabetes? Which part of the lens does this affect?

Answer 5

Posterior sub-capsular cataract

Back of lens on the inner surface of the capsule

Question 6

Which type of cataracts affect vision more anterior or posterior?

Answer 6

Posterior as the back of the lens is closer to the nodal point and so has more refractive power

Question 7

What diseases can causes lens dislocations?

Answer 7

Marfan’s Syndrome

Homocystinurea

Question 8

What is the inheritance pattern in homocystinurea and what does it result in?

Answer 8

Autosomal recessive which results in the lack of the enzyme that converts homocysteine to cystathionine

Question 9

Aside from drop in acuity what is the major visual complaint of people who have cataracts?

Answer 9

Glare. bring sun or car headlights become a problem.

Question 10

What are the 7 steps of cataracts surgery?

Answer 10

Anaesthesia 
Enter the eye
Capsulorhexis
Phaecoemulsify
Cortical Removal
Lens insertion
Close up