Index of Refraction
Which lens material has a refractive index of 1.49
What is CR-39
Which lens material is classified as impact resistance, but not suitable for drill mount frames?
What is Polycarbonate?
Which lens material is recommended for patients with a low powered Rx?
What is CR-39 ?
What does CR-39 stand for?
What is Columbian Resin on the 39th attempt?
Define Refraction
What is the bending of light?
Which lens material is recommended for a rimless frame
What is Trivex
Which lens material is suitable for a patient that has lost their vision in one eye?
What is a Polycarbonate lens
What is high index lenses
Due to index of refraction, which lens material would produce the thickest lens compared to the other lens materials
What is CR-39
Which lens material was banned by the FDA due to safety concerns?
What is a hi-index lens?
Which lens material is suitable for a patient with a high minus Rx?
What is hi-index lenses
Which frame material is classified as having the best ability to absorb color tints
What is CR-39
If a positive sphere lens is moved to the right, the object view through it would appear to move.
Up, Down, Left or Right?
Left
Which lens material has a low ABBE value therefore an Anti-Reflective treatment should be applied
What is a high index lens?
Which lens material is suitable for a patient that plays sports but express they want a lens that has the best optical quality?
What is Trivex
Your patient loves color and would like a purple tint applied to their lenses. Which lens material would you NOT pick for them?
What is polycarbonate lenses
If a negative sphere lens is moved to the right, the object view through it would appear to move:
Up, Down, Left or Right?
Right
Which lens material does NOT come with inherent UV and Scratch Coating/Protection?
What is CR-39?
Which lens material would you select for a patient who wants the thinnest and lightest lens - Please also specify the refractive index?
What is 1.74 High Index
Define Diopter
What is the unit of measurement for the power of a lens