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1.

Visual Function

Which of the following is true about LogMar?

The number of letters increases as you move down the chart

The letter spacing is equal to one letter width

A logMAR of 0 is equal to a Snellen score of 6/60

A LogMAR of +1 is equal to Snellen score of 6/6

None

2.

Aberrations

Which optical aberration is most affected when a lens is tilted?

Coma

Chromatic aberration

Spherical aberration

Pincushion distortion

None

3.

Prisms

A prism deviates light by 5 cm at a distance of 1 meter. What is its prismatic power?

0.5 prism diopters

5 prism diopters

10 prism diopters

50 prism diopters

None

4.

Calculations

Transpose the -4.00 DS/ -3.00 DC X 45 into positive cylinder notation?

−7.00 DS/ +3.00 DCx45

−7.00 DS/ +3.00 DCx135

−5.50 DS/ +3.00 DCx135

−5.50 DS/ +3.00 DCx45

None

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