ABO Practice Questions | Questions with 100% Verified
Answers | Latest Update 2026/2027
Question: How do you lower the front of the frame?
Answer: Move nose pads further apart or increase pantoscopic tilt (2 degrees = 1mm)
Question: If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is
that?
Answer: Pressure is being applied by the temple shafts anterior to the ear.
Question: When the wearers PD is less than the frame PD what should you do?
Answer: Positive face form
Question: The new bifocal wearer must:
Answer: Drop the eyes to read a book
Question: When the frame front is tested for four point touch, but only touches on the two temporal sides, the
frame is?
Answer: Has face form
Question: What error cannot be detected by the four point test?
Answer: Skewing
Question: The main reason for a lenticular lens is?
Answer: They are lighter in weight
Question: The steps for "finishing" a lens are?
Answer: Edging, Centration, Blocking, Spotting
Question: What type of frame may be heated until it bends under its own weight?
Answer: Optyl
Question: Usual reading level is considered to be ______ mm below
Answer: 8 mm
Question: Trifocals are most generally prescribed when the patient is:
Answer: An advanced presbyope
Question: A bifocal lens wearer having trouble accommodating can be helped by?
Answer: Adding plus power to his prescription
Question: The standard distance between double d segments?
Answer: 13 to 14mm
Question: What will excessive base up prism cause?
Answer: Makes people feel like they are walking down hill
Answers | Latest Update 2026/2027
Question: How do you lower the front of the frame?
Answer: Move nose pads further apart or increase pantoscopic tilt (2 degrees = 1mm)
Question: If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is
that?
Answer: Pressure is being applied by the temple shafts anterior to the ear.
Question: When the wearers PD is less than the frame PD what should you do?
Answer: Positive face form
Question: The new bifocal wearer must:
Answer: Drop the eyes to read a book
Question: When the frame front is tested for four point touch, but only touches on the two temporal sides, the
frame is?
Answer: Has face form
Question: What error cannot be detected by the four point test?
Answer: Skewing
Question: The main reason for a lenticular lens is?
Answer: They are lighter in weight
Question: The steps for "finishing" a lens are?
Answer: Edging, Centration, Blocking, Spotting
Question: What type of frame may be heated until it bends under its own weight?
Answer: Optyl
Question: Usual reading level is considered to be ______ mm below
Answer: 8 mm
Question: Trifocals are most generally prescribed when the patient is:
Answer: An advanced presbyope
Question: A bifocal lens wearer having trouble accommodating can be helped by?
Answer: Adding plus power to his prescription
Question: The standard distance between double d segments?
Answer: 13 to 14mm
Question: What will excessive base up prism cause?
Answer: Makes people feel like they are walking down hill
