Vision Flashcards
Structure of sclera
White part the eye
Collagen and elastin fibres
Function of sclera
Provide attachment for muscles
Structure of cornea
Clear part of sclera
Function of cornea
Acts as fixed lens that allows light into eye
Structure of the iris
Coloured part of the eye
Function of iris
Control opening of pupil
Structure of lens
Transparent fibres in clear membrane
Function of lens
Fine focusing
Two humors
Aqueous humor
Vitreous humor
Structure of aqueous humor and vitreous humor
Gel liquid filling eye
Function of aqueous and vitreous humor
Maintain shape of eye
Provides nutrients to cornea + eye lens
Structure of retina
Internal membrane with photoreceptors
What 2 photo receptors does the retina contain
Rods
Cones
Function of retina
Convert light to electrical signal
Why is the optic nerve described as a blind spot
No photoreceptors