Trifocal Study guides, Class notes & Summaries

Single Vision - ANSWER-corrects for one distance Multifocal - ANSWER-Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER-lens having two focus strengths Trifocal - ANSWER-pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER-obtained 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 during lens surfacing or, if the lens has sufficient power...

ABO Practical (ABO Practical broken down based on the ABO-NCLE practical Exam Candidate Handbook Practical Test Specifications sheet) 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 difference in edge thickness, either by grinding the ba...

Single Vision correct answers corrects for one distance Multifocal correct answers Corrects with two or more prescriptions (or 'powers') Bifocal correct answers lens having two focus strengths Trifocal correct answers pertaining to having three focus strengths Calculating Prismatic Effects correct answers obtained 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 during lens surfacing o...

Single Vision - ANSWER corrects for one distance Multifocal - ANSWER Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER lens having two focus strengths Trifocal - ANSWER pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER obtained 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 during lens surfacing or, if the lens has sufficient power...

The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is - ANSWER-Mixed The patient's RX is -1.75 -.50 x 120 with a +2.00 ADD standard trifocal. What is the power through the intermediate? - ANSWER--.75 -.50 x 120 The Geneva lens measure is designed to measure - ANSWER-Lens curvature The focal length of a +5.00 diopter lens is - ANSWER-20 cm The problem of prismatic imbalance at the reading level is called - ANSWER-Anisometropia Which of the following indicated the mo...

COT Exam Questions and Answers 2024 Due to refraction a prism bends light rays toward the ___________of the prism? - Answer-Base What is P=C/D ? -Answer-P = Prism C = the displacement of the object in cm D = the distance between the prism and the virtual image in meters This formula explains the relationship between the power of prism and the ability to bend light. Two Prisims base-to-base form what type of lens? -Answer-Plus or Convex Convex lenses do what to light rays? -Answer-Con...

ABO Practical exam questions & answers Single Vision - ANSWER-corrects for one distance Multifocal - ANSWER-Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER-lens having two focus strengths Trifocal - ANSWER-pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER-obtained 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 during lens surf...

The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is correct answers Mixed The patient's RX is -1.75 -.50 x 120 with a +2.00 ADD standard trifocal. What is the power through the intermediate? correct answers -.75 -.50 x 120 The Geneva lens measure is designed to measure correct answers Lens curvature The focal length of a +5.00 diopter lens is correct answers 20 cm The problem of prismatic imbalance at the reading level is called correct answers Anisometropia Whic...

The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is correct answers Mixed The patient's RX is -1.75 -.50 x 120 with a +2.00 ADD standard trifocal. What is the power through the intermediate? correct answers -.75 -.50 x 120 The Geneva lens measure is designed to measure correct answers Lens curvature The focal length of a +5.00 diopter lens is correct answers 20 cm The problem of prismatic imbalance at the reading level is called correct answers Anisometropia Whic...

ABO Practical Exam Questions And Answers Single Vision - ANS corrects for one distance Multifocal - ANS Corrects with two or more prescriptions (or 'powers') Bifocal - ANS lens having two focus strengths Trifocal - ANS pertaining to having three focus strengths Calculating Prismatic Effects - ANS obtained 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 during lens sur...