Anatomy
Disorders
Optics
Auxiliary Testing
Random
100

This is the white part of the eye.

What is sclera?

100

This common genetic condition affects around 8% of males.

What is color vision deficiency?

100

This material produces the thinnest lens design for a high Rx.

What is 1.74?

100

This machine evaluates a person's peripheral vision.

What is visual field analyzer?

100

This is the most common eye color.

What is brown?

200

This clear structure protects the iris and pupil.

What is cornea?

200

This condition is when an eye is turned out in misalignment.

What is exotropia?

200

This causes an image to shift optically in a given direction.

What is prism?

200

This machine checks for anterior surface irregularities.

What is corneal topography?

200

This condition is the fear of color.

What is chromophobia?

300

This photoreceptor helps us see better in dim conditions.

What is rod?

300

This condition is most often associated with a high intraocular pressure.

What is glaucoma?

300

A person with an Rx of -4.00 can focus out until this distance.

25 cm

300

This device holds many lenses used for refraction testing.

What is phoropter?

300

This person invented bifocals.

Who is Benjamin Franklin?

400

The flexibility of this structure helps us change focus.

What is lens?

400

This congenital condition is when someone is born without irises.

What is aniridia?

400

Convert -3.50+4.25x034 to minus cylinder format.

What is +0.75-4.25x124?

400

This instrument measures the thickness of the cornea.

What is pachymeter?

400

This animal has the largest eyes (~27 cm).

What is colossal squid?

500

Dogs and cats have this extra layer to increase visibility in the dark.

What is tapetum lucidum?

500

This is caused by an increased pressure around the brain resulting in vision changes and headaches.

What is idiopathic intracranial hypertension? (Pseudotumor cerebri)

500

This is a measure of a material's dispersion factor.

What is Abbe value?

500

This instrument is used to remove rust from the cornea.

What is Alger brush?

500

This animal's cornea is so similar to human's, it has been used in a transplant

What is a shark?