Gymkana Optics&Optometry Trivia

Keratoconus is a progressive eye disease where the cornea thins and bulges into a cone-like shape

• True

• False

Which two optical phenomena are primarily responsible for the formation of a rainbow?

• Refraction

• Dispersion

• Diffraction

• Reflection

• Polarization

Which two structures of the eye are primarily responsible for focusing light onto the retina?

• Cornea

• Lens

• Iris

• Retina

• Optic nerve

What type of lens causes parallel light rays to converge to a focal point? (1 word)

Which of the following is NOT a type of refractive surgery used to correct vision?

• LASIK

• PRK

• IOL

• LASEK

• RLE

What is, approximately, the typical value of the index of refraction of air? (write the number)

What is the approximate thickness of the human cornea in millimetres?

• 0.5-0.6 mm

• 1.0-1.2 mm

• 1.5-1.7 mm

• 2.0-2.2 mm

• 2.5-2.7 mm

In the anatomy of the eye, which region of the retina is responsible for the sharpest central vision and highest visual acuity? (1 word)

The Stiles-Crawford effect refers to the phenomenon where the light entering the eye is perceived to be brighter at the periphery of the visual field compared to the centre.

• True

• False

Which of the following optical phenomena involves the bending of light waves as they pass from one medium to another?

• Diffraction

• Dispersion

• Refraction

• Reflection