Question

Choose the correctly matched pair:

1. Yellow spot - Aperture of the iris
2. Pupil-Point of maximum visual clarity
3. Blind spot- Part of the choroid seen behind the cornea
4. Cornea-Anterior part of the sclera

• A. iv only
• B. iii only
• C. ii only
• D. i only

Answer 1

Answer:

A. iv only

PARTS	FUNCTIONS
Sclera	Tough outer layer of the eye which overs and protect eyeball.
Choroid	Prevents internal reflection of light and nourish retina.
Retina	Contains rods and cones which convert light into nerve impulses.
Ciliary Body	Contains rods and cones which convert light into nerve impulses.
Iris	Controls the pupil size thus controls entry of light.
Pupil	A hole in the iris that lets light into the back of the eye.
Lens	Accommodation & focusing of light onto the retina.
Cornea	Bends incoming light focusing it on the retina.
Fovea	A tiny area of densely packed cones for detailed and coloured vision.
Blind Spot	Exit point of the optic nerve cutting through the retina so no rods or cones.
Blind Spot	Carries the impulses from the rods and cones to the visual center of the brain.