Delta 2

Question 1

Optic neuritis features

Answer 1

2 CUP Mar
 Central scotoma
Color blindness ( all ON disease present with red green color blindness except glaucoma)
U/l LOV
Uthoffs sign
Pulfrich sign
Pain in eye on ocular movement 
Marcus gunn pupil

Mcc of a ON is multiple sclerosis

Question 2

IoL in children
<2 yr
2-8 yrs

Answer 2

Undercorrct the biometry power by20%

Undercorrect the power by 10%

Question 3

Schirmers strip

Answer 3

For evaluation of dry eye
It is a quantative measurement( to measure the amount of tear production)
It is whatman filter paper 41
5mm width and 35 mm length

Question 4

Mc complications of LASIK

Answer 4

Refractive error surprise ( hypermetropuc surprise)

Haggis formula or IOL master ( optical biometry) should be used to calculate IOL as keratometry won’t give correct curvature in post LASIK patients for cataract
Multifocal IOL should not be implanted in such patients

Question 5

Congenital glaucoma toc

Answer 5

Trabeculectomy + trabeculotomy

Question 6

Photo stress test

Answer 6

1. Best corrected visual acuity is measured in both eye
   2 light shown in each eye for 10 seconds
2. Note photo stress recovery time ( time taken to read 3 letters of pre test visual acuity line,)
   Normal time = 15-30 seconds
   Macular disease = >50 seconds

Other Macular function tests
Amsler grid
Laser inferometry

Question 7

Surgeries for ptosis

Answer 7

Mild ptosis= fasenella servat operation
Moderate ptosis = levetor resection ( strengthening) aka blaskowics
Severe ptosis = frontalis sling operation

Question 8

Eye drop and eye ointment

Answer 8

Drops first them ointment ( ointment forms a layer on cornea and requires more time. Of contact)