Ocular Therapeutics, Lasers and Cryotherapy in Ophthalmology
1. Intraocular penetration of topically-instilled drugs is mainly determined by the corneal:
A. Epithelium
B. Endothelium
C. Stroma
D. Bowman’s and Descemet’s membrane
2. The antiviral drug used for treatment of cytomeglovirus retinitis is:
A. Acyclovir
B. Ganciclovir
C. Triflurothymidine
D. All of the above
3. In primary open-angle glaucoma pilocarpine eye drops lowers the intraocular pressure by its direct action on the:
A. Trabecular meshwork
B. Ciliary epithelium
C. Longitudinal fibres of the ciliary muscle
D. All of the above
4. In primary angle-closure glaucoma pilocarpine lowers the intraocular pressure by its direct action on the:
A. Sphincter pupillae muscle
B. Ciliary epithelium
C. Trabecular meshwork
D. All of the above
5. Steroid-induced ocular complication is:
A. Glaucoma
B. Papilledema
C. Central retinal vein occlusion
D. All of the above
6. The technique of blocking the facial nerve at the neck of mandible is:
A. Van Lint’s block
B. O’Brien’s block
C. Nadbath block
D. Atkinson’s block
7. Retrobulbar injection of xylocaine blocks all of the following except:
A. 3rd cranial nerve
B. 4th cranial nerve
C. 6th cranial nerve
D. Ciliary nerves and ciliary ganglion
8. Absolute indication of enucleation is:
A. Intraocular retinoblastoma
B. Endophthalmitis
C. Mutilating ocular injury
D. All of the above
9. In the laser machines used in ophthalmology, the atomic environment used consists of:
A. Crystal rod
B. Fluid-filled cavity
C. Gas-filled cavity
D. Any of the above
10. Photo disruption is the basic mechanism of action of:
A. Argon laser
B. Nd: YAG laser
C. Excimer laser
D. All of the above
11. Photoablation is the basic mechanism of action of:
A. Argon laser
B. Nd:YAG laser
C. Excimer laser
D. All of the above
12. All of the following are indications of pan retinal photocoagulation except:
A. Pre-proliferative diabetic retinopathy
B. Proliferative diabetic retinopathy
C. Ischaemic central retinal vein occlusion
D. Central retinal artery occlusion
13. Laser photocoagulation is useful in all of the following macular disorders except:
A. Exudative age-related macular degeneration
B. Central serous retinopathy
C. Focal type of diabetic maculopathy
D. Aphakic cystoid macular oedema
14. Excimer laser is used in the correction of:
A. Myopia
B. Hypermetropia
C. Astigmatism
D. All of the above
15. Pilocarpine is not used in young adults as it causes:
A. Myopia
B. Cystic blebs of iris
C. Fatigue reaction
D. Allergy with circumcorneal congestion
16. Drugs used in treatment of herpes simplex keratitis include all except:
A. Idoxuridine 0.1%
B. 5-Fluorouracil
C. Adenosine arabinoside
D. Cytosine arabinoside
E. Pimarcin
17. In atropine instillation, all are seen except:
A. Dilated pupil
B. Paralysis of accommodation
C. Increased water content to tear
D. Decreased water content to tear
18. Near vision is not affected with:
A. Atropine
B. Adrenaline
C. Homatropine
D. Pilocarpine
19. In a patient predisposed to glaucoma, the drug contraindicated is:
A. Pilocarpine
B. Ecothiopate
C. Timolol
D. None of the above
20. Main disadvantage of cocaine as local anaesthetic was:
A. Causes dry eyes
B. Follicular conjunctivitis
C. Intraocular penetration
D. Epithelial erosions
21. Combination of pilocarpine and epinephrine use in glaucoma treatment may inhibit:
A. Pigmented pupillary cyst
B. Retinal detachment
C. Vitreous haemorrhage
D. Iridocyclitis
22. Type of laser used for capsulotomy is:
A. C02
B. Ruby
C. Nd:YAG
D. Argon
23. YAG laser is used in the treatment of:
A. Retinal detachment
B. Diabetic retinopathy
C. Open-angle glaucoma
D. After cataract
24. Argon laser is used in all except:
A. Retinal detachment
B. Retinitis pigmentosa
C. Retinal vein occlusion
D. Eales’ disease
25. Excimer laser is used in:
A. Glaucoma
B. Cataract
C. Uveitis
D. Diabetic retinopathy
E. None of the above