Single vision lenses - Study guides, Class notes & Summaries

NCLE Test Questions And Answers Latest Update 2023/2024 (Graded A+). Which of the following prescriptions indicates against-the-rule astigmatism? a)-4.50 +1.00 x75 b)-4.50 +1.00 x 180 c)-4.50 -1.00 x 165 d)4.50 -1.00 x 180 - Answer a)-4.50 +1.00 x75 When a keratometer is being calibrated, which of the following targets will provide the most reliable result? a)the single-cut anterior surface of a high-plus lens b)a perfectly flat highly polished mirror c) a set of steell balls of known r...

Rose Bengal testing: A. Is usually not necessary because the same information can be obtained by Schirmer testing B. Will stain devitalized conjunctival epithelial cells brightly C. Will only stain healthy epithelial cells D. Can be used to evaluate RGP lens fit instead of fluorescein ~ B. Will stain devitalized conjunctival epithelial cells brightly When evaluating tear film break up time: ~ A break-up-time of less than 10 seconds may preclude success with contact lenses The prese...

NCLE Practice Test Questions And Answers Latest Update 2024 (Verified 100%) Which of the following prescriptions indicates against-the-rule astigmatism? a)-4.50 +1.00 x75 b)-4.50 +1.00 x 180 c)-4.50 -1.00 x 165 d)4.50 -1.00 x 180 - Answer a)-4.50 +1.00 x75 When a keratometer is being calibrated, which of the following targets will provide the most reliable result? a)the single-cut anterior surface of a high-plus lens b)a perfectly flat highly polished mirror c) a set of steell balls of ...

When taking seg height measurements, which of the following situations could result in a parallax error? - ANSWER Patient sitting/ dispenser standing erect Which of the following is not significant in identifying the problem of vertical imbalance? - ANSWER Patient's age Which of the following elements is NOT critical when determining vertical imbalance? - ANSWER Lens power in the 180 degree meridian A prism will displace the object being viewed towards its ________. - ANSWER Apex A ...

Ncle Advanced, Questions with accurate answers. 100% Verified. 2022/2023 Which of the following medications may affect successful contact lens wear? a. antacids b. antihistamines c. aspirin d. laxatives - antihistamines Which term refers to a sensitivity to light A.presbyopia B.Photophobia C.Pannus D. Ptosis - Photophobia The following is an example of what type of astigmatism? K's 42.50 @180 /40.50 @90 A. with the rule B. Lenticular astigmatism C.Against the rule D...

OPTICIAN LICENSE EXAM 2024 SCORED A+

Change a bifocal Rx to a single vision Rx - CORRECT ANS 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 - CORRECT ANS There is a difference of 3 diopters between both eyes; when the vision of the eyes differs by a large margin. Antimetropia - CORRECT ANS Refers to Rx's that differ in sign. Ex. OD: +0.25 OS: -0.75 Simple Hyperopia - CORRECT ANS The Rx will be a + sphere Simple Myopia - CORRECT A...

Nylon - Answer-Material that some frames are made out of. Very elastic, especially when placed in water. Carbon Filter - Answer-Materials used to make frames containing threads of Carbon. Frame will be sturdy, slim, and lightweight. Frames will not be bendable at all. Usually only used for frame fronts. Polyamide - Answer-Material used to make frames. nylon based, very sturdy, slender and lightweight. the material is just 72% of the heaviness of cellulose acetate, so it is significantly li...

Nylon - Material that some frames are made out of. Very elastic, especially when placed in water. Carbon Filter - Materials used to make frames containing threads of Carbon. Frame will be sturdy, slim, and lightweight. Frames will not be bendable at all. Usually only used for frame fronts. Polyamide - Material used to make frames. nylon based, very sturdy, slender and lightweight. the material is just 72% of the heaviness of cellulose acetate, so it is significantly lighter. Po...

ABO Exam Questions And Correct Answers, With Complete Verified Solution. 100%. 350 Questions And Correct Answers. 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: The ciliary body The ability of the eye to bring objects of varying distances to focu...