Sample of Exam Questions
363OPTO
Q.Calculate the spherical equivalent of the following prescription:
+ 1.75 – 1.00 x 65
Q.A patient's prescription is :
+ 1.25 – 0.50 x 120; Add : +2.00DS
What is the near prescription?
Q. For a patient:
NRA = + 3.75
PRA = - 2.25
What will be the ADD?
Q.What do you understand by the term “spherical equivalent of a prescription”?
Q.In using the Jackson Cross Cylinder, the axis of correcting cylinder is refined before power. Why?
Q. Placing JCC infront of an eye does not effect the position of circle of least confusion. Why?
Q. If the PP of an eye is 40 cm from the eye and the eye is myopic of1.00D, what is the AA?
Q.What are the factors that affect the amplitude of accomodation in human beings? For a patient:
Q.Calculate the spherical equivalent of the following prescription:
+ 1.75 – 1.00 x 65
Q.In carrying out the clock dial test under fog, a patient reports that the best line is 2 O’clock. What is the axis of the correcting plus cylinder?
Q.What is the best method for determining a patient’s ADD?
(Give reasons for the answer)
Q.In measuring a patient’s ADD by using cross cylinder technique, what is usually the end point?
Q.What is the difference between “PHORIA” AND “TROPIA”?
Q. With the red glass placed over the OD, a patient sees two spots of light with the red spot to the left of the white spot.
What is the diagnosis?
Q.Below is the result of Cover test:
OS Occluded
OS: OUT, OD: NO MOTION
OS Exposed
OS: IN OD: NO MOTION
What is the diagnoso?
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OD Ocluded
OD: IN OS: OUT
OD: NO MOTION OS: NO MOTION
What is the diagnoso?
Q. For a patient:
NRA = + 3.75
PRA = - 2.25
What will be the ADD?