Normal Findings

Question 1

Tessellated Fundus

Answer 1

Where the Choroidal Vessels is deeply pigmented and can be seen through the retina owing to reduced pigmentation or hypoplasia of the retinal pigment epithelium (RPE)

A common characteristic of Myopic eyes.

Question 2

Tigroid Fundus

Answer 2

Where the deeply pigmented Choroid gives the appearance of dark polygonal areas between the choroidal vessels, especially in the periphery.

A retina with spotted or striped appearance.

Question 3

Choroidal Naevus

Answer 3

Flat, benign pigmented area - an eye freckle.

You would monitor for any change or development.

Question 4

What is the cause for Choroidal Naevus?

Answer 4

Exposure to UV-B radiation

An increased production of melanin caused by DNA photodamage to the melanocytes causes excess melanin to be deposited in the choroidal tissue.

Question 5

How common is a Choroidal Naevus?

Answer 5

• 6.5% of the Caucasian population

- 3-4% of the general population

Question 6

Myopic Crescent

Answer 6

A moon-shaped feature that can develop at the temporal, lateral border of the disc of Myopic eyes.

It is primarily caused by atrophic changes to the Choroid, permitting the sclera to become visible.

A minor contribution from stretching due to elongation of the eyeball.