Ncle stuvia - Study guides, Class notes & Summaries

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 ...

NCLE Preparation Exam Part 2 of 4 with Complete Solutions NCLE Preparation Exam Part 2 of 4 with Complete Solutions NCLE Preparation Exam Part 2 of 4 with Complete Solutions NCLE Preparation Exam Part 2 of 4 with Complete Solutions Application of fluorescein should be used in which of the following situations? A. Evaluation of a rigid gas permeable (RGP) lens fit B. Evaluation of soft contact lens parameters C. Evaluation of vascularization of the cornea D. Evaluation of rigid ...

What is the thickest layer of the cornea? - ANSWER-stroma Which corneal layer controls the fluid content of the cornea? - ANSWER-endothelium What is cornea edema? - ANSWER-excess fluid in the stroma that can swell it and lead to loss of visual acuity What kind of contact lenses must be stabilized (not rotate) on the eye for good vision? - ANSWER-toric contact lenses Concentric vs Aspheric Multifocal Lens Design - ANSWER-aspheric multifocal lenses have a gradual change in power from d...

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 (i.e. 8.4 to 8.1 mm) flatter base curve - ANSWER-occurs when the posterior radius of curvature is increased (i.e.8.1 to 8.4 mm) bicurve lens - A...

NCLE Practice Test Practical Questions and Answers (Graded A) NCLE Practice Test Practical Questions and Answers (Graded A) NCLE Practice Test Practical Questions and Answers (Graded A) NCLE Practice Test Practical Questions and Answers (Graded A) Steep Fluorescein Pattern - ANSWER-Bright green pooling center, very faint green pooling on diameter of lens Flat Fluorescein Pattern - ANSWER-Bright green pooling on diameter of lens, very faint green in center Against-the-rule Astigma...

Application of fluorescein should be used in which of the following situations? A. Evaluation of a rigid gas permeable (RGP) lens fit B. Evaluation of soft contact lens parameters C. Evaluation of vascularization of the cornea D. Evaluation of rigid gas permeable lens over-refraction - ANSWER-A. Fluorescein is a valuable tool in evaluating the lens to cornea relationship of a rigid gas permeable lens. A special type of fluorescein (fluorosoft) should be used to evaluate the fitting rel...

Test that measures the quality of tears - ANSWER-B.U.T. Test (Break up time) What is the O2 Permeability - ANSWER-DK values of a lens What are the disadvantages of Soft Lenses? - ANSWER-Doesn't correct irregular astigmatism, favors deposit formation Which test measures the quantity of tears? - ANSWER-The Schirmer test. What are good results for the Schirmer test? - ANSWER-15 mm in 5 minutes. What are dry eye results for the Schirmer test? - ANSWER-5-10 mm in 5 minutes. Neovasc...

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NCLE Basic Exam Study Guide 2024 with Complete SolutionsNCLE Basic Exam Study NCLE Basic Exam Study Guide 2024 with Complete SolutionsNCLE Basic Exam Study Guide 2024 with Complete SolutionsGuide 2024 with Complete Solutions Diffused Illumination - ANSWER--Uses widest slit, longest aperture -Light source positioned at an angle of 40º-50º -Used to view overall areas, to observe the ocular adnexa, cornea, sclera, lids, conjunctiva, lens surface, and CL fitting characteristics Direct Illumi...

NCLE Prep Exam Part 1 of 4 with Complete SolutionsNCLE Prep Exam Part 1 of 4 with Complete SolutionsNCLE Prep Exam Part 1 of 4 with Complete SolutionsNCLE Prep Exam Part 1 of 4 with Complete Solutions Which of the following medications may affect successful contact lens wear? A. Antacids B. Antihistamines C. Aspirin D. Laxatives - ANSWER-B. Antihistimines Which term refers to a sensitivity to light? A. Prebyopia B. Photophobia C. Pannus D. Ptosis - ANSWER-B. Photophobia The follo...