Bits & Pieces COPY

Question 1

Define Accomadaiton

Answer 1

Focussing CLOSE UP
So:
-> Parasympathetic Innervation
-> Contraction of ciliary muscle
-> Relaxes suspensory ligaments
-> Less tension on lens
-> Lens shortens and fattens
-> Greater bending of light
-> Focusses close up

Question 2

What lens would be used to correct hyperopia vs myopia?

Answer 2

Hyperopia (longsightedness)

• Image focusses behind retina
• > Convex lens to increase bending of light

Myopia (Shortsightedness)

• > Image focusses in front of retina
• Concave Lens to reduce bending

Question 3

what type of neuron is involved in sight>

Answer 3

Bipolar