NCLE Advanced Exam Study Guide

NCLE Advanced Exam Study Guide 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. Irregular astigmatism - Against the rule astigmatism The cornea receives nutrients from 1 Aqueous humor 2 Tears 3 Limbal blood vessels 4 Orbicularis occuli a. 1, 3 & 4 b. 2 & 3 c. 1, 2 & 3 d. 3 & 4 - aqueous humor, tears and limbal blood vessels The increased loss of ability of the crystalline lens to accommodate is called? - presbyopia Which instrument can provide simultaneous information about the cornea, lids, conjunctivitis, lashes, contact lens surface and fit? A. Radius scope B. Corneascope C. Slitlamp D. Keratometer - Slit lamp The classic model of the pre-corneal tear film is composed of three layers what are they? - Lipids aqueous mucin The average ph value of the human tear is a. 6.6 b. 7.4 c. 7.8 d. 10.0 - B. 7.4 If the manufacturers guidelines suggest a minimum of four hours for this disinfection, what would you suggest to the patient A.Never leave lenses in disinfectant overnight B.2 to 3 hours is probably enough C.Use surfactant cleaner and preserved saline D. A minimum of four hours is required - A minimum of four hours is required The main supply of oxygen to the corneal epithelium is derived from the A.Stroma B.Collagen fibrils C.Basal membrane D.Tear film - Tear film What is the term for the condition in which there is loss of vision without any apparent disease to the eye? - amblyopia Which auxiliary lens will extend the keratometer range to approximately 30.00D? - -1.00 Which step should be performed first when taking keratometer measurements? - Focus the eyepiece The following is an example of what type of astigmatism K's 44.00 @180/ 44.50 @90