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Math for ABO test Latest Questions and Answers(American Board of Opticianry (ABO) A Box: 53 DBL: 15 ED: 55 PD: 30/32 OD: 68/2 =34 OS: 68/2=34 What is the MBS for the rt and left lens? {Answer: - OD: 68/2 =34 OS: 68/2=34 Decentration: Frame PD- PT PD OD: 34-30=4 decentered OS: 34-32= 2 decentered OD: MBS=ED+(2xDecenter)+2 MBS=55+ 8 (2x4)+2=65mm OS: MBS=ED+(2x decenter)+2 MBS=55+4 (2x2)+2=61mm OD-65mm blank OS: 61MM blank What is Prentice rule used for? {Answer: - To (Power x di...

ABO EXAM PRE-TEST WITH ANSWERS 150 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. Meters B. Decimeters C. Centimeters D. Nanometers UVC - ️️ -Which of the following has the shortest and therefore most harmful wavel...

c. 5 mm from the top of the segment d. at the very bottom of the segment - answerb. in the geometric center of the segment The base curve of any multifocal lens is found on the surface containing the: a. cross curve b. cylinder surface c. segment d. ocular curve - answerc. segment Normal slab-off (bicentric grind) is ground on the lens whose vertical meridian has the: a. strongest curves b. most plus power c. least plus power d. least minus power - answerc. least plus power The refra...

ABO Exam Questions And Answers (Updated And Verified) When light is refraction by a prism it is: a. Bent toward the apex b, Bent toward the base c. Not bent d. Reflected - answerB. 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 chromatic Dispersion IV. Move the image toward the apex V. Are sometimes prescribed for muscle problems - answerI. Always bend light toward base I...

ABO PRACTICE EXAM PART ONE Questions With 100% Correct Answers The wavelength of the infrared waves in the electromagnetic spectrum are - answerlonger than visible red light waves the Geneva Lens Measure is calibrated for a refractive index of - answer1.530 A lens made from 2 convex surfaces - answerhas against motion A lens reads +4.25D in the vertometer. If the ocular curve is -4.00D, what is the front base curve? - answer+8.25D Which of these front base curves would be suitable for a ...

ABO EXAM PRE-TEST Exam Questions And Answers (Updated And Verified) 150 mm - answerWhen 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 - answerWhat is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - answerWavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC - answerWhich of the following has the shortest and...

ABO Practice Questions And Answers (Updated And Verified) How do you lower the front of the frame? - answerMove 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? - answerPressure is being applied by the temple shafts anterior to the ear. When the wearers PD is less than the frame PD what should you do? - answerPositive face form The new bifocal wearer must: - an...

ABO Practice Exam Questions And Answers (Updated And Verified) 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 - answerFalse If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: A. The frame is too small B. The bridge fit is tight C. Pressure is being applied by the temple shafts anterior to the ear. D. Pressure i...

ABO Practical Exam Questions And Answers (Updated And Verified) Single Vision - answercorrects for one distance Multifocal - answerCorrects with two or more prescriptions (or 'powers') Bifocal - answerlens having two focus strengths Trifocal - answerpertaining to having three focus strengths Calculating Prismatic Effects - answerobtained at the center of an optical lens by producing a difference in edge thickness, either by grinding the back surface at an angle to the front surface dur...

ABO PRE-TEST EXAM 2023 |100 QUESTIONS WITH VERIFIED SOLUTIONS 100% CORRECT

ABO EXAM 2024 WITH 100% ACCURATE SOLUTIONS a pair of eye with a distance P.D. =68mm, converge for a reading an average of about - correct answer 3 to 4 mm if the pupillary distance is measured while the patient is focusing on a point 30 inches in front of the eyes, the P.D. measured is known as the - correct answer intermediate P.D. the instrument that opticians commonly use to measure the vertex distance is called a - correct answer distometer if the long edge of an adjustable nose ...