Ncle exam stuvia - Study guides, Class notes & Summaries

Which of the following medications may affect successful contact lens wear? a. antacids b. antihistamines c. aspirin d. laxatives - Answer antihistamines Which term refers to a sensitivity to light A.presbyopia B.Photophobia C.Pannus D. Ptosis - Answer 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. Irregular astigmatism - Answer Against the rule astigmatism T...

ABO NCLE Exam Questions and Answers 100% Accurate ABO NCLE Exam Questions and Answers 100% Accurate ABO NCLE Exam Questions and Answers 100% Accurate ABO NCLE Exam Questions and Answers 100% Accurate 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 me...

The answer is D. The posterior optical zone will directly affect the lens to cornea relationship of a rigid gas permeable lens. If the posterior optical zone is steepened, it will increase the sagittal depth. If it is flattened, it will decrease the sagittal depth. Changing the power, which is accomplished by changing the anterior optical zone, will not affect the sagittal depth of the lens, nor will changing its edge design. - Answer 1. The sagittal depth of a rigid gas permeable contact len...

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 relationship of a soft contact lens. If the diagnostic rigid gas permeable lens placed on the eye results in minimal movement, which of the following will increase the movement on the lens ordered for the patient? A. Decreasing overall lens diameter B. Increasing overall diameter C. Increasing optic z...

Accommodation - ANSWER-The ability of the crystalline lens to adjust power to provide retinal focus of images of objects closer than optical infinity Aphakia - ANSWER-Absence of the crystalline lens. Astigmatism - ANSWER-A refractive defect where the refractive surface has different power in different meridians As a result the image formed of a point object will not be a point but a line Axis (cylinder) - ANSWER-The weakest or least curved meridian on the surface of a cylindrical or tor...

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 following is an example of what type of astigmatism? K's 42.50 @ 180 / 40.50 @ 90 A. With the Rule Astigmatism B. Lenticular Astigmatism C. Against the Rule Astigmatism D. Irregular Astigmatism - Answ...

Accommodation - Answer The ability of the crystalline lens to adjust power to provide retinal focus of images of objects closer than optical infinity Aphakia - Answer Absence of the crystalline lens. Astigmatism - Answer A refractive defect where the refractive surface has different power in different meridians As a result the image formed of a point object will not be a point but a line Axis (cylinder) - Answer The weakest or least curved meridian on the surface of a cylindrical or tor...

Direct Illumination - ANSWER--Most important/useful illumination -Light source positioned at an angle of 40º-50º to oculars -Light beam and oculars are focused in coincidence on area being evaluated -The difference in the illumination is not the angle used, but where the beam is directed or focused and the width -Varying width and aperture creates different illuminations Optic(al) Section - ANSWER--Type of direct illumination that uses a narrow beam to create a cross-section of the corn...

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 distance to near where as the power change in concentric desig...

Chapter 4 CL: NCLE EXAM REVIEW QUESTIONS AND ANSWERS 100% CORRECTChapter 4 CL: NCLE EXAM REVIEW QUESTIONS AND ANSWERS 100% CORRECTChapter 4 CL: NCLE EXAM REVIEW QUESTIONS AND ANSWERS 100% CORRECT D. all of the above - ANSWER-The eyelids play an important role in the fitting and wear of contact lenses for which of the following reasons? A. they effect the wettability of the lens serface B. they effect the positioning of the lens C. they are sensitive and generally cause most of the discomfort...