FORM 3 - STRUCTURE OF EYE PART 3

Transparent layer which refracts and focuses light onto the retina

• cornea

• retina

• pupil

• aqueous humour

muscle that changes the thickness of the eye lens through contractions and relaxations

• eye lens

• iris

• cornea

• ciliary muscle

part of retina that is most sensitive to light. it has many photoreceptors

• iris

• suspensory ligament

• yellow spot

• vitreous humour

part of retina that is not sensitive to light. it has no photoreceptor

• yellow spot

• optic nerve

• ciliary muscle

• blind spot

strong layer that protects the shape of eyeball

• sclera

• retina

• pupil

• choroid

black layer that prevents reflection of light and supplies oxygen and nutrient to the eye

• sclera

• retina

• cornea

• choroid

transparent and elastic convex lens to focus light onto retina

• retina

• sclera

• lens

• ciliary muscle

retina

• contracts and relaxes to change the thickness of the eye lens

• layer containing photoreceptors to detect light and produces nerve impulse

• opening in the centre of the iris

• black layer that prevents reflection of light and supply oxygen and nutrients to the eye

sclera

• black layer the prevent reflection and supply oxygen to the eyeball

• have photoreceptors to detect light and produces impulse

• carry impulse from the retina to the brain

• strong layer to maintain the shape and protect the eye

iris

• coloured part of the eye that controls the opening of pupil

• transparent layer that refracts light and focuses light onto retina

• muscle that changes the thickness of the lens

• transparent fluid that maintain the shape of the eyeball