ABO (NOCE) Practice Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
| Question | Answer |
| The shorter the radius the _______ the curve and the stronger the diopter power is. | steeper |
| The larger the sphere the _______ the curve. | flatter |
| The smaller the sphere the _______ the curve. | steeper |
| A lens that is both concave and convex is known as a ________ lens | meniscus |
| A concave lens is known as a _____ lens | minus |
| A convex lens is known as a ____ lens | plus |
| What is another name for a bi-concave lens? | Myodisc |
| Distortions inherent in any lens with power are known as... | Aberrations |
| What optical tool is used to measure the curvature of a lens and is considered one of the most useful but underrated tools in the optical industry. | The Lens Clock |
| The Lens Clock is calibrated for what index of refraction? (the number not the name) | 1.53 |
| True or False: The Lens Clock can check for slab off. | True |
| True or False: The Lens Clock can determine what the lens material is made out of. | False |
| What is the "standard" index of refraction in the optical industry? | 1.53 |
| The cylinder is used for the correction of ___________ and can be used by itself or it can be combined with a sphere. | astigmatism |
| What is the name of the term for when the distance of the ocular or back surface of a lens is away from the patient's cornea? | Vertex Distance |
| A +10.00 lens has moved away from a patient's eyes by 5mm. What is the power of the lens for the patient now? | +10.50 |
| A -10.00 lens has been moved closer to a patient's eyes by 5mm. What is the power of the lens for the patient now? | -10.50 |
| A +10.00 lens has moved closer to a patient's eyes by 5mm. What is the power of the lens for the patient now? | +9.50 |
| A -10.00 lens has been moved away from a patient's eyes by 5mm. What is the power of the lens for the patient now? | -9.50 |
| What does RVD stand for? | Refracted Vertex Distance |
| What does FVD stand for? | Fitted Vertex Distance |
| True or False: A distometer can accurately measure vertex distance. | True |
| True or False: A distometer can measure lens thickness. | False |
| Vertex distance compensation is mandatory for a spectacle prescription of ______ diopters or greater. | +/- 7.00 |
| What is the Base Curve for the power ranges of Plano to +2.00 | +6.00 |
| What is the Base Curve for the power ranges of -2.00 to -4.50 | +4.00 |
| What is the Base Curve for the power ranges of +5.50 to +8.75 | +10.00 |
| In modern medical ophthalmic lenses, ocular curves are always ______ or ________ | minus concave |
| A smaller sphere will have ____ power. | more |
| A larger sphere will have ____ power. | less |
| A flatter base curve will make objects appear _______ than before. | smaller |
| An increase in plus power in the base curve makes objects appear ______ than before. | larger |
| Higher index materials create lenses with natural _______ base curves. | flatter |
Created by:
burukkusu
Popular Medical sets