ABO Practice Questions And Answers
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 walking
down hill
Photochromatic lenses will be darkest on what kind of day? - ANS Cold and bright
A number 3 tint absorbs: - ANS 80% of the light entering the lens
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 walking
down hill
Photochromatic lenses will be darkest on what kind of day? - ANS Cold and bright
A number 3 tint absorbs: - ANS 80% of the light entering the lens
