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R - Yr2 Special Sense (Liam Lennox) > Bits & Pieces > Flashcards

Flashcards in Bits & Pieces Deck (3)
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1
Q

Define Accomadaiton

A
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
2
Q

What lens would be used to correct hyperopia vs myopia?

A

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
3
Q

what type of neuron is involved in sight>

A

Bipolar