Ncle exam stuvia - Study guides, Class notes & Summaries

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...

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 - ANSWER-C. Against the Rule Astigmatism This is present when the K readings are steeper i the horizontal meridian than the vertical meridian The cornea receives nu...

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...

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 measure - ANSWER-Lens curvature The focal length of a +5.00 diopter lens is - ANSWER-20 cm The problem of prismatic imbalance at the reading level is called - ANSWER-Anisometropia Which of the following indicated the mo...

HYDROGEL - Answer Soft contacts are manufactured from hydrogel Due to the high water content there are often fluctuations in vision. Benefits of soft contact lenses: - Answer •Comfort •Shorter adjustment period •More comfortable in dusty environments •Sports. Excellent for athletics because soft lenses will not fall out of the eye •Good alternative to eyewear for patient with minor corrections characteristics of contact lens materials - Answer •Percentage of water content ...

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 when a lens is first placed on the eye. D. all of the above C. Loose lenses - Answer Small puncuated stains on the corneal epithelium when seen under an ultraviolet light are most likely cause...

C. Loose lenses - ANSWER-Small puncuated stains on the corneal epithelium when seen under an ultraviolet light are most likely caused by: A. foreign bodies B. loose lenses C. tight lenses D. epical clearance lenses D. Too tight a lens - ANSWER-After about four hours of wear, your patient complains that his eyes feel "hot". This may be an indication of: A. too small a lens B. too large a lens C. too loose a lens D. too tight a lens B. Rigid PMMA Lenses - ANSWER-Three and nine O'c...

myopic eye - ANSWER-Eye is to long Hyperic eye - ANSWER-Eye is to short hyperopia - ANSWER-farsighted vision myopia - ANSWER-nearsighted emmetropia - ANSWER-normal vision Cornea Index - ANSWER-1.37 Aqueous humor, viterious humor, water index - ANSWER-1.33 Crystalline lens index - ANSWER-1.43 Power of average eye - ANSWER-+60 Diopters of power The higher the index the more.... - ANSWER-Light will bend