Objectively Structured Clinical examination

Case 1
Direct ophthalmoscopy. It was a case of high myopia with macular scar. I was asked uses of green and blue filter on the slit-lamp.

Case 2
Indirect ophthalmoscopy showed retinochoroidal coloboma adn I was asked to roughly draw the locatio fo the coloboma. Asked about the optic of 20D and how it compares with a 30D lens.

Case 3
Pupillary examination. It was a case of Adie's pupil and I was interrupted in between and was asked to give the differential diagnosis of an unilaterally dilated pupil.

Case 4
Keratometry. It was a case of oblique astigmatism and I was asked about the principle of kertometer and the differences between the two most common types of keratometer.

Case 5 
Lensometer. Asked to do it on a pair of bifocals. Asked about the working principle of lensometer.

Case 6
Ocular movement. The patient had a third nerve palsy.

Case 7
Visual field examination on a patient with albinism and nystagmus. The visual field was constricted and asked about the possible causes.

Objectively Structured Questions

Station 1
Asked to calculate AC/A ration using the gradient method and asked the normal ratio for AC/A.

Station 2
Coronal CT scan showing a pituitary gland adenoma.

Station 3
Hess's chart showing features of long-stadning 6th nerve palsy. Asked bout the principle of Hess's chart.

Station 4
Asked to draw the ray diagram of Maddox rod.

Station 5
Humphrey visual field.

Station 6
Coloured fundus and FFA show superior branch retinal vein occlusion.

Station 7
A patient is wearing +10D glasses and if they were brought forwards towards the cornea by 3mm. What will be the power of the glasses?

Station 8 
Can't remember.