ABO Practice Questions and Solutions
How do you lower the front of the frame?-ANS - Move nose pads further apart or
increase pantoscopic tilt (2 degrees = 1mm)
If the wearer complains that the glasses feel snug but still slip down the nose, one likely
cause is that?-ANS - Pressure is being applied by the temple shafts anterior to the ear.
When the wearers PD is less than the frame PD what should you do?-ANS - Positive
face form
The new bifocal wearer must:-ANS - Drop the eyes to read a book
When the frame front is tested for four point touch, but only touches on the two temporal
sides, the frame is?-ANS - Has face form
What error cannot be detected by the four point test?-ANS - Skewing The main
reason for a lenticular lens is?-ANS - They are lighter in weight The steps for
"finishing" a lens are?-ANS - Edging, Centration, Blocking, Spotting What type of
frame may be heated until it bends under its own weight?-ANS - Optyl Usual
reading level is considered to be ______ mm below-ANS - 8 mm
Trifocals are most generally prescribed when the patient is:-ANS - An advanced
presbyope
A bifocal lens wearer having trouble accommodating can be helped by?-ANS - Adding
plus power to his prescription
The standard distance between double d segments?-ANS - 13 to 14mm What
will excessive base up prism cause?-ANS - Makes people feel like they are
How do you lower the front of the frame?-ANS - Move nose pads further apart or
increase pantoscopic tilt (2 degrees = 1mm)
If the wearer complains that the glasses feel snug but still slip down the nose, one likely
cause is that?-ANS - Pressure is being applied by the temple shafts anterior to the ear.
When the wearers PD is less than the frame PD what should you do?-ANS - Positive
face form
The new bifocal wearer must:-ANS - Drop the eyes to read a book
When the frame front is tested for four point touch, but only touches on the two temporal
sides, the frame is?-ANS - Has face form
What error cannot be detected by the four point test?-ANS - Skewing The main
reason for a lenticular lens is?-ANS - They are lighter in weight The steps for
"finishing" a lens are?-ANS - Edging, Centration, Blocking, Spotting What type of
frame may be heated until it bends under its own weight?-ANS - Optyl Usual
reading level is considered to be ______ mm below-ANS - 8 mm
Trifocals are most generally prescribed when the patient is:-ANS - An advanced
presbyope
A bifocal lens wearer having trouble accommodating can be helped by?-ANS - Adding
plus power to his prescription
The standard distance between double d segments?-ANS - 13 to 14mm What
will excessive base up prism cause?-ANS - Makes people feel like they are
