The document discusses 15 different ophthalmic instruments used in various eye examinations and surgeries. For each instrument, the name, relevant procedure (e.g. cataract surgery), and potential complications are provided. The instruments include the Nettleship punctum dilator, trial frame, Schiotz tonometer, wire vectis, Simcoe cannula, phacoemulsification device, chalazion clamp, chalazion scoop, Barraquer needle holder, evisceration scoop, and instruments used in DCR surgery. Differences between immature and mature cataract and measurement of visual acuity with Snellen's chart are also summarized.

1. OSPE (Ophthalmology)
Dr. Md Anisur Rahman
Professor & Head Ophthalmology Dhaka Medical
College, Dhaka.

2. Write down the name of the instrument
in the above picture
Nettleship Punctum dilator
What is the function of the instrument?
Dilatation of punctum
What are the diagnostic and therapeutic
uses of the instrument?
i) Diagnostic use - SPT ii) Therapeutic
use – During DCR surgery
Mention 2 complications during its
use.
i) Punctum/canaliculus injury ii) False
passage formation
OSPE: 1

3. Write down the name of the
device shown in the picture
Trial frame
Mention its 2 uses.
i) Measurement of visual acuity. ii)
Refraction
What are the types of lenses you
can use with it?
i) Spherical – concave, convex
ii) Cylindrical – concave, convex
OSPE: 2

4. What is the name of the
instrument?
Schiotz tonometer
What can be measured with
this instrument?
IOP
What diseases can be
diagnosed?
Glaucoma
OSPE: 03

5. What is the name of the instrument?
Wire Vectis
When it is used?
To express the nucleus
In which operation it is used?
Small Incision Cataract Surgery (SICS)
What complication may arise
during the process?
i) Posterior capsular rupture.
ii) Corneal endothelium
decompensation/injury
OSPE: 4

6. What is the name of the
instrument?
Two way aspiration and irrigation
cannula (Simcoe)
In which operation it is used?
Cataract surgery
When it is used?
To remove the cortical matter from the
anterior chamber
What complication may arise
during the process?
i) Posterior capsular rupture.
ii) Corneal endothelium
decompensation/injury
OSPE: 5

7. What is the name of the
instrument?
Phaco emulsification
In which operation it is used?
Phacoemulsification with Posterior
Chamber Intra ocular Lens
Implantation
What are the advantages of this
operation over conventional?
i) Early rehabilitation.
ii) Less astigmatism
OSPE: 6

8. What is the name of the
instrument?
Chalazion clamp
In which operation it is used?
During chalazion operation
What is the name of the operation?
Incision and curettage (I & C)
What are the functions of this
instrument? Mention 3
i) Exposure of the operation field
ii) Homeostasis
iii) Fixation. (any 2)
OSPE: 7

9. What is the name of the
instrument?
Chalazion scoop
In which operation it is used?
Chalazion operation
What is the name of the surgery?
Incision & Curettage/ (I & C)
What is the function of this
instrument?
For scooping out the materials from the
chalazion
OSPE: 8

10. What are the name of these two
instruments?
Nettleship punctum dilator and
Bowman lacrimal probe
Mention one diagnostic and one
therapeutic use
Diagnostic: Sac patency test (SPT)
& Therapeutic: Syringing
OSPE: 9

11. What is the name of the
instrument?
Barraquer needle holder.
Mention 3 uses.
It is used to hold the needle of 10/0
monofilament nylon during:
i. corneal repair
ii. giving stitch during cataract
surgery,
iii. trabeculectomy
OSPE: 10

12. What is the name of the
instrument?
Evisceration scoop
Mention one use
Scooping out the ocular content
during evisceration
Mention two indications of the surgery.
i) Endophthalmitis
ii) Panophthalmitis.
iii) Phthisial eye (any 2)
OSPE: 11

13. What is the name of the box?
Snellen chart
What is its use?
To measure the distance visual
acuity
Mention 2 prerequisite to use it
i. Patient should stand/sit 6 meter
away from the chart.
ii. Visual acuity should be measure
by covering other eye
OSPE: 12

14. What is the name of the
instrument?
Phaco knife / Keratome
When it is used?
During giving incision
Does it come in different shape?
Mention: 2.
Yes. 3.2 mm & 2.8 mm
OSPE: 13

15. What is the name of the
instrument?
DCR Trephine
In which operation it is used?
In Dacryocystorhinostomy
(DCR) operation
What complications may arise
during it’s use?
Complications: (Any 2)
i. Injury to lacrimal sac
ii. Injury nasal mucosa
iii. Injury to surrounding structure
OSPE: 14

16. What is the name of the
instrument?
DCR Punch forcep
In which operation it is used?
In Dacryocystorhinostomy
(DCR) operation
What complications may arise
during it’s use?
Complications: (Any 2)
i. Injury to lacrimal sac
ii. Injury nasal mucosa
iii. Injury to surrounding structure
OSPE: 15

18. Difference between immature & mature cataract
Immature cataract
1) Considerable vision present
2) Colour of the lens is grayish
white
3) Iris shadow present
4) Fundal glow present
Mature cataract
1) Vision is reduced to CF
2) Colour of the lens is pearly
white
3) Iris shadow absent
4) Fundal glow absent
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19. How the visual acuity measure with Snellen’s chart
1) 6/60
2) 6/36
3) 6/24
4) 6/18
5) 6/12
6) 6/9
7) 6/6
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