OSE
Station 1::
Question: What is this instrument?
Draw a ray diagram to explain its principle?
Answer: Maddox wing. Ray diagram.
Station 2:
Question: What is this investigation?
What does it show? What is the probable site of lesion?
Answer: HFA. Congruous Left Superior
quadrantanopia. Right temporal lobe
Station 3:
Question: What is this investigation?
What are the principles related with this diagnostic technique? What does
it show?
Answer: Hess charting. Haploscopic
principle, foveal correspondence, Herring’s law, Sherington’s law. RIGHT
EYE superior oblique palsy.
Station 4:
Question: Transpose into minus cylinder
form ? What is its spherical equivalent?
Answer: ??? donut remember the exact
figures.
Station 5:
Question: What is this investigation?
What does it show? Which part of the eye is involved?
Answer: USG A-scan and USG B-scan.
Membrane like (high reflectivity) lesion with underlying mass (low reflectivity)
like lesion, and no sound attenuation. ?? Retina and Choroid involved (??
Retinal detachment with underlying subretinal haemorrhage or choroidal
melanoma with retinal detachment).
Station 6:
Question: What is this investigation?
What does it show? What is the probable diagnosis?
Answer: sequential Fundus Fluorescein
Angiography scans. Irregular areas of hyperfluoresence and hyperfluoresence
increasing with time located in the centre of macula (1disc area). CNVM/ARMD
Station 7:
Question: What is this investigation?
What does it show? Which part of the eye is involved?
Answer: CT Scan Orbits. ?? Contrast
enhancing, well-defined mass lesion with areas of bony shadows behind the
globe and in area of Lacrimal gland producing proptosis and medial deviation
of globe. ??? Lacrimal gland (tumour) or vascular (haemangioma) involvement
Station 8:
Question: patient has exotropia
of 10 prism dioptres in and his refractive correction is +5D. What is the
type of prisms is used in management. What will be the amount of optical
decentration of lens in front of right eye to maintain alignment?
Answer: BI prisms. 2cm nasal deviation
of lens.
OSCE
Station 1:
VISUAL FIELD EXAMINATION of young
male
?? Diagnosis: Bitemporal hemianopia.
Detected on static confrontation field test.
Questions: Demonstrate? What
is the field defect? Where is the site of lesion? Describe the optical
pathway at the chiasma that explain the field defect. Asked to find/ demonstrate
the extent of lesion (with finger). What are the various coloured targets
used for? Asked to demonstrate the use of coloured targets.
Station 2:
OCULAR MOTILITY EXAMINATION of young
male
?? Diagnosis: Total right
eye third nerve palsy
Questions: Asked to observe
the patient and tell findings (Ptosis, dilated pupils, right eye out and
down)? Performed cover test (sec dev = primary dev)? EOM showed restriction
of MR, SR, IR, IO. Asked and demonstrated how to look for SO in cases of
3rd CNP. Asked me about probable site of lesion and probable cause of lesion.
Station 3:
KERATOMETRY of right eye of young
male
Questions: Principle of keratometer?
Type of keratomer? Principle of image doubling? Principle of variable object/image
size? Difference between different types of keratometers?
Station 4:
FOCIMETER of patients distance vision
glasses
Questions: what adjustments
I made before starting the examination and why? What all I can calculate
with the help of focimeter? How will I find out that prism is present in
the lens? How will I mark the optical centre of the lens? What is the principle
behind the working of this machine?
Station 5:
DIRECT OPHTHALMOLOGY of left eye
of young girl
?? diagnosis: macular scar
and medulated nerve fibre at disc
Questions: demonstrate and describe
findings? What is the possible cause of this lesion? What is the magnification
of this instrument? What is the effect of patients refractive error on
magnification? what are green filter used for in examine the patient?
Examine the right eye of another gentlemen sitting next to the lady and
tell the findings? (??? Vitreous haziness, disc details obscured due to
haemorrages). Bell rings while I was in middle of examination
Station 6:
INDIRECT OPHTHLMOLOGY of left eye
of middle aged male with poor vision in left eye
?? diagnosis: old CRVO with
Old Pan Retinal Laser Photocoagulation and macular gliosis and plucker
Questions: demonstrate and describe
left eye findings? Look and Describe right eye which has good vision? (??
Normal posterior pole) What is the magnification of 20D lens? What is the
difference between 20 and 28D lens?
Station 7:
PUPILLARY EXAMINATION of a young
girl
?? diagnosis: right eye Total
3rd nerve palsy with pulsatile bony defect sec to surgery on the right
forehead
Questions: demonstrate and describe?
Why do u think it is 3rd nerve palsy? Where is the possible site of lesion?
What is the possible cause of lesion? What is Relative Afferent Pupillary
Defect? What does Relative Afferent Pupillary Defect signify?
Station 8:
SLIT LAMP EXAMINATION of both eyes
of a girl child
?? diagnosis: B/L Keratoconus
with Left eye acute hydrops
Questions: demonstrate and describe
findings? Why u used blue filter? What various illumination u used for
examination (diffuse, direct focal, optical slit, indirect focal)? What
other examination techniques u know of in slitlamp examination (retroillumination,
specular reflection, sclerotic scatter)? Demonstrate how will u perform
specular microscopy and describe while doing?
REFRACTION:
65year old male patient
Diagnosis: Bilateral aphakia.
RIGHT EYE +9.50/+2.25*180 6/6 &
LEFT EYE +10.0/+2.00*180 6/6
NV add +2.50 N6
JCC, Duchrome test, binocular balancing
for near and distance, BSV test, Maddox rod test, BVD, IPD measurements
done. Asked in last one minute about old glasses and explained to examiners
about the need for comparison with the new prescription
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