Past MRCOphth/MRCS questions: 14
1. The following substances usually lower the intraocular 
a. para-amino clonidine
b. salbutamol
c. ethyl alcohol
d. marijuana
e. the prostaglandin PGF2 alpha

2. Fuchs' endothelial dystrophy:

a. is the most common reason for penetrating 
    keratoplasty in developed countries
b. is more common in men
c. causes worsening of vision during the course of a day
d. may be helped by using a hair dryer on the eye
e. is often associated with other systemic diseases

3. Acanthamoeba keratitis:

a. is caused by Acanthamoeba castellani
b. is caused by Acanthamoeba polyphaga
c. has not been successfully treated medically
d. is charateristically painless
e. may be successfully cultured on Escerichia coli 
    enriched chocolate agar

4. Intraocular gases used in retinal detachment surgery:

a. pure sulphur hexafluoride is non-expansile
b. a one ml bubble of C3F8 disappears in 10 days
c. pneumatic retinopexy is not recommended in patients 
    with glaucoma
d. are best injected into the most dependant part of the eye
e. should not be used with nitrous oxide anaesthesia 
    because this causes an immediate decrease in bubble 

5. Light-near dissociation occurs in:

a. myotonic dystrophy
b. chronic progressive external ophthalmoplegia
c. Holmes-Adie pupil
d. Parinaud's syndrome
e. Wernicke's pupil

6. Disc drusen:

a. are similar histologically to retinal drusen
b. become progressively embedded with age
c. may cause arcuate field defects
d. may cause sudden loss of vision
e. may be associated with anomalous retinal vessel patterns

7. In the optic tract:

a. the macular fibres lie centrally
b. lesion causes sectorial optic atrophy
c. lesion may be associated with a contralateral 
    /Marcus-Gunn pupil
d. lesion causes congruous homonymous hemianopia
e. carries 60% of its fibres to the lateral geniculate body

8. Persistent hyperplastic primary vitreous:

a. is unilateral in 90% of cases
b. is associated with calcification early
c. is associated with elongated ciliary processes
d. has an abnormal aqueous/serum lactate dehydrogenase 
e. exhibits relative microphakia

9. Mooren's ulcer:

a. are painful
b. run a chronic course of 10-30 years
c. may show scleral involvement
d. are not associated with uveitis
e. only occurs in elderly patients

10. The following are true about corneal sensation:

a. panretinal photocoagulation therapy may cause a 
    reduction in corneal sensation
b. corneal hypoesthesia is a form of diabetic sensory 
    neuropathy, and is seen in patients with proliferative 
    diabetic retinopathy
c. neuropathic keratopathy is a contraindication for 
    performing laser panretinal photocoagulation in eyes 
    with proliferative diabetic retinopathy
d. corneal hypoesthesia may be seen in patients with 
    background diabetic retinopathy
e. cataract surgery can lead to corneal hypoesthesia.
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