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Cancelling effect- subtract prism amounts - BU/BU BD/BD BI/BO Powers between 0.00 & +/- 3.00 - Read in 1/8 diopters .12 .37 .62 .87 Lensometer is also referred to as - Lensmeter, focimeter, vertometer To focus eyepiece - 1) while turned off. Place white sheet of paper against lens stop. 2)...

The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - Six The fibrous tunic is comprised of the: - Sclera and cornea Fusion occurs: - In the brain The aqueous fluid is continually being manufactured by: ...

Change a bifocal Rx to a single vision Rx - Add the bifocal power to the sphere powers. OD: -0.50 OS: -0.25-0.25x172 Add: +1.75 Turns intoOD: +1.25 OS: +1.50-0.25x172 Anisometropia - There is a difference of 3 diopters between both eyes; when the vision of the eyes differs by a large margin. ...

Which of the following is NOT a characteristic of a Plus Lens: A) Magnifies B) Real Focal Length C) With Motion D) Strengthens as Vertex Increases - C) With Motion The weight of the standard dress safety drop ball according to the FDA regulations is: A) 72 ounces B) 6.5 ounces C) 8.7 ounces ...

Single Vision - corrects for one distance Multifocal - Corrects with two or more prescriptions (or 'powers') Bifocal - lens having two focus strengths Trifocal - pertaining to having three focus strengths Calculating Prismatic Effects - obtained at the center of an optical lens by producing a ...

the wavelength of the infrared waves in the electromagnetic spectrum are - longer than visible red light waves the Geneva Lens Measure is calibrated for a refractive index of - 1.530 A lens made from 2 convex surfaces - has against motion A lens reads +4.25D in the vertometer. If the ocular curv...

The ability of the eye to focus on objects at different distances - Accommodation Fresnel optics - Press on prism Frame material that resist stretching with heat - Nylon Bridge type that spreads weight over the greatest area - Saddle Amount of jump image is not affected by - The seg inset Doubl...

Sclera - Tough, white outer coat of the eyeball myopia - nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it reflection - light that bounces back refraction - when the direction of light changes as it passes from one med...

50 mm - When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - Wavelengths are measured in A...