ABO Exams Bundle

Single Vision CORRECT ANSWER corrects for one distance Multifocal CORRECT ANSWER Corrects with two or more prescriptions (or 'powers') Bifocal CORRECT ANSWER lens having two focus strengths Trifocal CORRECT ANSWER pertaining to having three focus strengths Calculating Prismatic Effects...

When discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index CORRECT ANSWER d. front curve, back cu...

150 mm - Answer 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 - Answer What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers ...

The ability of the eye to focus on objects at different distances - Answer Accommodation Fresnel optics - Answer Press on prism Frame material that resist stretching with heat - Answer Nylon Bridge type that spreads weight over the greatest area - Answer Saddle Am...

If the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - Answer False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is tha...

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

When light is refraction by a prism it is: a. Bent toward the apex b, Bent toward the base c. Not bent d. Reflected - Answer B. Bent toward the base A prism always bends light toward its base. Prisms: I. Always bend light toward the base II. Always bend light toward the apex III. Cause...

How do you lower the front of the frame? - Answer Move nose pads further apart or increase pantoscopic tilt (2 degrees = 1mm) 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 sha...

What are the three layers of the eye? - Answer Fibrous tunic, vascular tunic, and nervous tunic What are the five layers of the cornea from anterior to posterior? - Answer Epthelium, Bowmans Membrane, Stroma, Descemets Membrane, Endothelium What controls the amount of light enterin...

Cancelling effect- subtract prism amounts - Answer BU/BU BD/BD BI/BO Powers between 0.00 & +/- 3.00 - Answer Read in 1/8 diopters .12 .37 .62 .87 Lensometer is also referred to as - Answer Lensmeter, focimeter, vertometer To focus eyepiece - Answer 1) while t...

Name the scientist who first described the ABO blood group - Answer Karl Landsteiner State the importance of the ABO blood group in transfusion medicine - Answer Most important system in transfusion. Only system with expected naturally occurring antibodies for antigens not present on ...

Light falling on the front surface of a spectacle lens is: A) partially reflected, partially absorbed and the remainder refracted B) partially reflected and the remainder refracted C) partially absorbed and the remainder refracted D) totally refracted - Answer A) partially reflected, par...

To what does a ptosis crutch give support? - Answer -Upper Lid. How is a lens' focal LENGTH altered? - Answer -Changing the curvature of one surface. Which instrument measures vertex distance? - Answer -Distometer. What controls the amount of light that enters the eye? ...

The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are_________ of these muscles in each eye. - Answer six The fibrous tunic is comprised of the: - Answer sclera and cornea Fusion occurs: - Answer in the brain ...