52 - AIIMS MAY 2006 paper - part 3

21. In general, the last muscle to be rendered akinetic with retrobulbar anesthetic block is: 
1. Superior rectus. 
2. Superior oblique 
3. Inferior oblique 
4. Levator palpebral superioris. 

Ans. -* 

22. Whichone of the following statements, concerning persistent hyperplastic primary vitreous (PHPV) is not true? 
1. It is generally unilateral 
2. Visual prognosis is usually good. 
3. It may calcify 
4. It is most easily differentiated from retinoblastoma by the presence of exophthalmos or cataract. 

Ans. -* 

23. The laser procedure, most often used for treating iris neovascularization, is : 
1. Goniophotocoagulation 
2. Laser trabeculoplasty 
3. Panretinal photocoagulation (PRP) 
4. Laser iridoplasty. 

Ans. -* 

24. Which of the following is the most important factor in the prevention of endophathalmitis in cataract surgery? 
1. Preoperative preparation with povidone-iodine. 
2. One week antibiotic therapy prior to surgery. 
3. Trimming of eyelashes 
4. Basal cell carcinoma 

Ans. -2 

25. A receurrent chalazion should be subjected to histopathologic evaluation to exclude the possibility of: 
1. Squamous cell carcinoma. 
2. Sebaceous cell carcinoma. 
3. Malignant melanoma. 
4. Basal cell carcinoma. 

Ans. -3 

26. Amyloid deposits stain positively with all of the following except: 
1. Congo-red 
2. Crystal violet 
3. Methenamin silver 
4. Thioflavin T 

Ans. -3 

27. The crystalline lens derives its nourishment from: 
1. Blood vessels. 
2. Connective tissue 
3. Aqueous and vitreous 
4. Zonules 

Ans. -* 

28. Band shaped keratopathy is caused by: 
1. Amyloid 
2. Calcium 
3. Monopolysaccharide 
4. Lipid 

Ans. -3 

29. Bitermporal hemianopic field defect is characteristic of : 
1. Glaucoma 
2. Optic neuritis 
3. Pituitary tumour 
4. Retinal detachment 

Ans. -2 

30. The afferent pathway for light papillary reflex is: 
1. Trigeminal nerve 
2. Optic nerve 
3. Abducent nerve 
4. Ciliary nerve 

Ans. -2