1. Urate crystals: 

a. come from the breakdown of DNA

b. occur in cornea in patients with gout

c. are soluble in formalin

d. causes scleritis if deposited in the sclera

e. are negatively birefrigence
 

Answera.T   b.T   c.T   d.T  e.T

2. During hammering, a piece of iron foreign body entered a patient's eye 
    and became embedded in the retina. Slit-lamp examination revealed 
    iris transillumination and cataract. The following are true: 

a. the patient had a penetrating corneal wound

b. the patient had a perforating iris wound

c. the patient had a penetrating lens wound

d. the patient had a penetrating ocular injury

e. phacolytic glaucoma is a complication

Answera.F   b.T   c.F   d.T   e.F
A penetrating wound passes into a structure whereas a 
perforating wound passes through a structure. Therefore, 
this patient has a penetrating ocular wound but perforating 
wound of the cornea, iris and lens.
Phacolytic glaucoma occurs when lens material from a 
hypermature lens leaks out. Whereas phacoantigenic glaucoma occurs with lens trauma. 

3. The following are true about cornea: 

a. amiodarone is deposited in the anterior stroma

b. pannus occurs between the Bowman's layer and
    the epithelium

c. in cystinosis, the crystals are found in the epithelium

d. in Wilson's disease, copper is deposited in the descemet 
    membrane

e. in band keratopathy, calcium is deposited in the Bowman's 
    membrane

Answera.F   b.T   c.T   d.T   e.T
Amiodarone is deposited in the epithelium giving rise to vortex keratopathy.

4. The following are true about phakomatoses:

a. they are characterized by disseminated hamartomas

b. ataxia-telangiectasia is the only condition that is
    inherited in an autosomal recessive pattern

c. Sturge-Weber's syndrome is the only condition that
    is not inherited

d. astrocytic hamartoma is found only in tuberous sclerosis

e. only Sturge-Weber's syndrome is associated with glaucoma

Answera.T   b.T   c.T   d.F  e.F
Astrocytic hamartoma also occurs in neurofibromatosis.
Neurofibromatosis is also associated with an increased incidence of glaucoma.

a

5. True statements include:

a. Bergmeister's papilla contains patent hyaloid artery remnant

b. Bergmeister's papilla is found on the optic disc

c. Mitterdorf's dot is usually found in the inferotemporal aspect
    of the posterior lens capsule

d. Mitterdorf's dot causes progressive cataract

e. persistent pupillary membrane is a remnant of the anterior 
    tunical vasculosa lentis.
 

Answera.F   b.T   c.F  d.F   e.T
Bergmeister's papilla contains non-patent hyaloid artery remnant.
Mitterdorf's dot is non-progressive and appears as an 
opacity in the inferonasal aspect of the posterior lens capsule.