problem solving Flashcards
(17 cards)
What should you ask when troubleshooting about the glasses?
- Time the eyeglasses have been worn.
- what are the symptoms?
- compare new and previous Rx
- Compare new and previous eyeglasses
- check PD and optical center
- Compare base curves
- Compare materials
- evaluate frame fit
- for Progressives, evaluate reading area
- check segment position.
One of the very first steps to troubleshooting a member’s problem with new eyeglasses is to:
Compare the new eyeglasses with the doctor’s written Rx
When a myopic patient has an increase in minus power, they may notice:
Objects appearing smaller and further away
When a hyperopic patient has an increase in plus power, they may notice:
objects appear larger and closer
When a patient has a change in cylinder power or axis, they may notice:
Objects appear slanted
What do you do if the prescription has changed and the still causes eye to feel strain?
The wearer should adapt to this within a few hours or a few days at most.
What is the most common reasons that patients experience difficulty with spectacle lenses?
Unwanted prism.
- They may be describing eye strain or that they just don’t see as well as they expected.
The well placed optical center should be how far from the pupil?
Should be 5 to 6mm below the pupil
What is the average degree of pantoscopic when locating the optical center?
between 10 to 12 degrees of pantoscopic
What to do when the previous pair of lenses were made incorrectly but the patient has gotten use to the unwated prism?
The decision needs to be made to remove, reduce or maintain the prism
What to do if the patient is having difficulty seeing in the distance or seeing at the near?
- check that the segment is in the correct position before ordering new lenses, adjust the frame.
What to do when a new bifocal wearer or someone with increase in add power describes the floor looking blurry or having trouble negotiating stair or their depth perception is off?
- Lowering the segment or decreasing vertex distance
If a patient describes double vision when reading, at what meridian should difference in powers be calculated?
90 degree
What is the ANSI standard for base curve tolerance?
+/-0.75D
If a new bifocal were states the floor looks blurry or they have trouble negotiating stairs. once of the first steps to try is to:
Lower the segment height
If a patient has imbalance in the prismatic effect in their bifocals, they may need:
- A slab off
In high power lenses, the vertex distance of the eyeglasses should:
- match the refracting vertex distance
