Plus lenses are - Study guides, Class notes & Summaries
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NCLE Exam Prep (2023/2024) RATED A+
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optic zone - the central portion of a contact lens which contains the refractive 
power and generally corresponds to the central corneal cap 
posterior apecal radius - this term is generally used in reference to spin-cast soft 
lenses. the curvature of the posterior surface of the lens changes with the refractive 
power. the radius of curvature is measured at the apex of the posterior surface. 
steeper base curve - occurs when the posterior radius of curvature is decreased (i.e. 
8.4 to 8.1 ...
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NCLE Practice Test 100% Correct Solved
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NCLE Practice Test 100% Correct Solved 
A Correct Statement regarding epithelial cells is that they: 
a)Comprise the posterior layer of the cornea 
b)Are unable to regenerate 
c)Comprise the thickest layer of the cornea 
d) Have the ability to reproduce - Correct Answer ️️ -d) have the ability to reproduce 
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 - Correct Answer ️️ -a)-4...
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Full Test Bank For ABO (American Board of Opticianry) Exams/Practice Test/ Questions and Answers /2024 Guarantee Pass Guide
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TEST BANK 
Full Test Bank For ABO (American Board of Opticianry) Exams/Practice Test/ Questions and Answers /2024 Guarantee Pass Guide 
ABO Practical Questions	2 
ABO Latest Test	10 
ABO EXAM PRE-TEST	14 
ABO Exam Questions and Answers	35 
ABO PRACTICE EXAM	41 
ABO Practice Exams Questions and Answers	43 
ABO REVIEW Questions Answered 100% Correct	65 
ABO Practice Test	69 
ABO Exam Prep Solved 10% Correct Questions and Answers	84 
ABO Study Guide Questions and Answers	91 
ABO Practical Exam	97 
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NCLE Study Guide Questions with Correct Answers
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NCLE Study Guide Questions with Correct Answers 
 
Back Surface Power - Answer-Effective power of a lens when measured from the back surface. 
 
Back Surface Toric Lens - Answer-A lens in which the posterior surface has two different radii and the anterior surface is spherical. 
 
Ballasted Lens - Answer-A lens with a heavier base which becomes oriented inferiorly or downward when the lens is worn. 
 
Bicurve Lens - Answer-A contact lens which contains two curves: one base curve and one secondar...
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NCLE Practice Test| 125 Questions| Correct Answers| Verified
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A Correct Statement regarding epithelial cells is that they: 
 
a)Comprise the posterior layer of the cornea 
b)Are unable to regenerate 
c)Comprise the thickest layer of the cornea 
d) Have the ability to reproduce - ANSWER d) have the ability to reproduce 
 
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 ...
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NCLE Test Questions And Answers Latest Update 2023/2024 (Graded A+)
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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...
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NCLE Practice Test Questions and Answers 2024
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A Correct Statement regarding epithelial cells is that they: 
 
a)Comprise the posterior layer of the cornea 
b)Are unable to regenerate 
c)Comprise the thickest layer of the cornea 
d) Have the ability to reproduce - d 
 
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 - a 
 
When a keratometer is being calibrated, which of the following targets will provide the most reliable result? ...
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ABO advance study guide Accurate 100%
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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 ...
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NCLE Exam Prep 2023-2024 with Complete Solutions!
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optic zone - ANSWER-the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap 
 
posterior apecal radius - ANSWER-this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. 
 
steeper base curve - ANSWER-occurs when the posterior radius of curvature is decreased ...
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ABO 2023 Practice Test Solved 100%
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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 - ANSWER-d. front curve, back curve, thickness and index 
 
Toric transposition shows: 
 
a. lens thickness 
b. power in principal meridians 
c. the power of the ADD 
d. the lens diameter - ANSWER-b. power in principal meridians 
 
Increa...
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