Test 167  (Ocular anatomy )
1. Ora serrata:
a. forms the boundary between the retina and the 
    ciliary body

b. is closer to the Schwalbe's line temporally than nasally

c. forms part of the pars plana

d. does not contain photoreceptors

e. is loosely adherent to the vitreous


2. Vitreous:
a. is acellular in normal eye 

b. is about 4.0 ml in normal adult

c. contains mainly type II collagens

d. contains a lower concentration of hyaluronan and 
    collagen in high myopia than the normal population

e. inhibits angiogenesis

3. Lutein:
a. is a carotenoid

b. is an antioxidant

c. is concentrated in fovea

d. is found within the retina pigment epithelium

e. gives the macula a yellow colour

. 4. Zeaxanthin: 
a. is concentrated in the fovea

b. is found within the retina pigment epithelium

c. is similar in molecular weight to lutein

d. has equal distribution in rods and cones

e. reduces the incidence of exudative age-related macular 

5. The lens capsule:

a. is the basement membrane of lens epithelium

b. is made up mainly of type IV collagen

c. is impermeable to proteins

d. becomes thinner with age

e. is five times thicker thicker anteriorly than posteriorly in an adult lens

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