1. Molluscum contagiosum: 

a. is caused by a poxvirus

b. causes follicular conjunctivitis through the release of viral 
    particles into the conjunctiva

c. causes acanthosis

d. is an AIDS-defining disease in HIV positive patients

e. is sensitive to acyclovir
 

Answera.T   b.T   c.T   d.T  e.F
Molluscum contagiosum usually resolves spontaneously except in AIDS patients where the lesions may be multiple

2. Capillary haemangioma: 

a. often undergoes spontaneously resolution

b. is commoner in males than females

c. most commonly occurs in the eyelids

d. contains thick fibrous walls

e. is associated with thrombocytopenia in Kasabach-Merrit's
    syndrome

Answera.T   b.F   c.T   d.F   e.T
It is commoner in females than males. The wall is thin and lined by a single layer of endothelium.

3. Posterior embryotoxon

a. is caused by thickening of the Schwalbe's line

b. is caused by anterior displacement of the Schwalbe's line

c. is a normal finding in 10% of the population

d. is associated with glaucoma in 50% of cases

e. when associated with iris processes  that extend to the 
    posterior surface of the cornea is called Axenfeld's 
    anomaly

Answera.F   b.F   c.T   d.F   e.T
Posterior embryotoxon represents thickening and anterior  displacement of the Swalbe's line which is the transitional 
zone between the cornea and the trabecular meshwork.
It is a normal finding in 10 % of the population. 

4. Flexner-Wintersteiner's rosettes: 

a. occurs in retinocytoma

b. can be found in pinealblastoma

c. are primitive ganglion cells

d. is associated with favourable prognosis in retinoblastoma

e. is commoner than Homer-Wright's rosettes

Answera.F   b.T   c.F   d.F  e.T
Flexner-Wintersteiner's rosettes arise from the primitive 
photoreceptors. They may be seen in pinealblastoma. 
They are of little value in predicting the prognosis of retinoblastoma.

a

5. In diabetic retinopathy:

a. microaneurysms are found in the junction between the inner 
    nuclear and outer plexiform layers.

b. flame-haemorrhages occur in the nerve fibre layer.

c. dot and blot haemorrhages occur in the inner plexiform 
    layer.

d. cotton wool spots result from ischaemia of the nerve fibre 
    layer.

e. IRMA (intraretinal microvascular abnormalities) show 
    profuse leakage with fluorescein angiography.
 

Answera.T   b.T   c.T  d.T   e.F
Unlike neovascularization, IRMA typically shows little or no leakage with fluorescein angiography.