Bifocal lens - Study guides, Class notes & Summaries

ABO EXAM PRE-TEST 2024 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 -Answer-Wavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC -Answer-Which of the following has the shortest and therefore most harmful wavelength? A. UVC ...

ABO Practical(ABO Practical broken down based on the ABO-NCLE practical Exam Candidate HandbookPractical Test Specifications sheet) Single Vision corrects for one distance Multifocal Corrects with two or more prescriptions (or 'powers') 00:05 01:09 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, eith...

NCLE Study Questions with Correct Answers annular bifocal contact - Answer-A lens with distance portion ground into the center of the lens and the near portion ground into the periphery aphakic lenses - Answer-lenses designed for post-cataract fitting apical zone of cornea - Answer-the central portion of the cornea with a constant radius of curvature. Also called the corneal cap. artificial tears - Answer-medications, many of them over the counter, to treat dry eyes aspheric lens ...

What does the abbreviation JCAHPO stand for? - Answer-Joint Commission on Allied Health Personnel in Ophthalmology What responsibility routinely falls to the ophthalmic medical assistant? - Answer-Performing certain diagnostic tests Which eye care professional is a medical doctor? - Answer-Ophthalmologist Which eye care professional routinely fills prescriptions for eyeglasses? - Answer-Optician What does an orthoptist do? - Answer-Evaluates double vision What do you call an ophthalmologi...

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 - correct answer False 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 is being applied on the very tips of the temples. - c...

Optometry Exam 1 Questions with Revised Answers When do refractive errors result? - Answer-They result when light entering the eye doesn't focus on the retina What do eye care providers use to correct refractive errors? - Answer-Optical aids such as spectacles and contact lenses or surgical procedures such as LASIK What is asthenopia? - Answer-It is eyestrain and can result from functional vision disorders What are dysfunctions of the vergence and accommodative systems called? - Ans...

NAO VOLUME 3 QUESTIONS AND ANSWERS | LATEST VERSION | 2024/2025 | RATED A+ What is the main purpose of an optical prescription? An optical prescription is a written order specifying the refractive power of lenses needed to correct a patient's vision. What does "OD" mean on a prescription? OD stands for "oculus dexter," which is the Latin term for the right eye. How is "astigmatism" corrected in lenses? Astigmatism is corrected by using cylindrical lenses tha...

ABO Exams (American Board of Opticianry Exams) Questions With Complete Solutions Which of the following is a usual way of ordering the lenses? A. OU -4.50 4BD and 2BO B. OD -4.50 2BD 1BO OS -5.00 2BU 1BO C. OD -4.50 4BD OS -5.00 2BO D. OD -4.50 2BD 1BO OS -5.00 2BD 1BO [Correct Ans: - OD -4.50 2BD 1BO OS -5.00 2BU 1BO Which of the following is recommended for children's bridge? A. Saddle B. Keyhole C. Adjustable pads D. Golden gate [Correct Ans: - Keyhole A frame fits p...

ABO EXAM PRE-TEST 2024 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 -Answer-Wavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC -Answer-Which of the following has the shortest and therefore most harmful wavelength? A. UVC ...

ABO Practical Exam (American Board of Opticianry) Questions With Complete Solutions Single Vision [Correct Ans: - corrects for one distance Multifocal [Correct Ans: - Corrects with two or more prescriptions (or 'powers') Bifocal [Correct Ans: - lens having two focus strengths Trifocal [Correct Ans: - pertaining to having three focus strengths