Common Conditions Involving the Cornea

Question 1

What is the transparent extension of the sclera covering the iris and pupil.

Answer 1

cornea

Question 2

Is the cornea reflective?

Answer 2

Yes, highly

Question 3

What shape is the cornea?

Answer 3

dome shaped

Question 4

Why is it’s highly reflective nature clinically important?

Answer 4

For the corneal light test

Question 5

Is the cornea transparent?

Answer 5

yes

Question 6

Does the cornea cover the iris and pupil?

Answer 6

yes

Question 7

Are corneal abrasions painful?

Answer 7

Yes, very

Question 8

Corneal abrasions disrupt what?

Answer 8

Visual acuity

Question 9

How do the blood vessels radiate with corneal abrasions?

Answer 9

They radiate out from the limbus.

Question 10

Where is the limbus located?

Answer 10

Edge of the cornea

Question 11

What can aggravate the cornea?

Answer 11

blinking

Question 12

How many times do we blink per minute usually?

Answer 12

25 times

Question 13

A grayish band along part of the edge of the limbus initially, eventually encircling the entire cornea.

Answer 13

Corneal arcus/ring

Question 14

When is the corneal arcus/ring NOT clinically significant?

Answer 14

In people over the age of 60

Question 15

If a person is under 40 years old, a corneal arcus/ring is and indication of what?

Answer 15

hyperlipidemia

Question 16

A golden-brown band around the limbus of the cornea associated with Wilson’s disease.

Answer 16

Kaiser-Fleisher ring

Question 17

What is Wilson’s disease?

Answer 17

Where copper accumulates in the liver and throughout the body resulting in neurologic symptoms.

Question 18

Is Wilson’s disease common?

Answer 18

No rare

Question 19

How does one get Wilson’s disease?

Answer 19

It is inherited

Question 20

What color is the band in Kaiser-Fleisher ring?

Answer 20

golden-brown

Question 21

What color is the band in corneal arcus/ring

Answer 21

grayish