King Saud University
College of Applied Medical Sciences
Department of Optometry
Final Practical Exam
OPTO 354
L(6)
1428H-1429H
Student Name: ……………………………………… ID#:………………………
Q1: How to correct the following fitting to obtain the optimum one (if needed) ?
A) (Dia=14.00mm\ B.C=8.5mm) steep fitting :
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B) (Dia=14.00mm \B.C= 9mm) flat fitting :
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Q2: A 21 year old girl wishes to wear contact lenses. her prefitting clinical data are :
|
OS |
OD |
parameter |
|
43.00\44.00@180 |
40.50\42.00@180 |
K's |
|
12.50 mm |
12.50 mm |
HVID |
|
12.00 mm |
12.00 mm |
VVID |
|
4 mm |
4 mm |
Pupil Dia. |
|
-2.50-1.00X180 |
-4.50-0.25X180 |
Ref. |
Find the initial lenses OU for this girl…
Good Luck..
Exam Answers :
Q1) (A) BC = 8.80 mm Dia = 13.50 mm
(B) BC = 8.70 mm Dia = 14.50 mm
Q2 ) RX :
|
|
BC |
Dia |
Power |
|
OD |
9.00 mm |
14.50 mm |
- 4.25 DS |
|
OS |
8.40 mm |
14.50 mm |
- 3.00 DS |