ABO Review 1

When ordering a 6 inch temple, its corresponding millimeter value is which of the following?

• 135 mm

• 140 mm

• 145 mm

• 150 mm

If the pad arms are shortened (pushed into the frame) this adjustment will:

• raise the front

• drop the front

• set the front closer to the face

• push the front more out

The refractive astigmatism indicated by the Rx +1.50 -1.00 x 180 is:

• compound hyperopic

• mixed

• simple myopic

• antimetropic

What is the focal length of a 2 diopter lens?

• 500 cm

• 39.37 inches

• 500 mm

• 2 meters

Wavelengths are measured in:

• meters

• decimeters

• centimeters

• nanometers

Which of the following has the shortest and therefore most harmful wavelength?

• UVC

• UVB

• UVA

• INFRARED

When two light waves are "in phase" they will:

• destroy one another

• reduce each front by half

• compound one another

• none of these

The cylinder axis tolerance for a 1.00D cylinder according to ANSI Z80.1 is:

• Plus or minus 7 degrees

• Plus or minus 5 degrees

• Plus or minus 3 degrees

• Plus or minus 2 degrees

A plus lens decentered "out" will result in a finished lens which is:

• balanced

• thicker temporally

• thicker nasally

• uniform in edge thickness

A minus lens decentered "out" will result in a finished lens which is:

• balanced

• thicker temporally

• thicker nasally

• uniform in edge thickness