NCLE Prep Exam Part 1 of 4 | with COMPLETE SOLUTION

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Which of the following medications may affect successful contact lens wear? A. Antacids B. Antihistamines C. Aspirin D. Laxatives - ✔✔B. Antihistimines Which term refers to a sensitivity to l ... ight? A. Prebyopia B. Photophobia C. Pannus D. Ptosis - ✔✔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 - ✔✔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 nutrients from: 1) Aqueous Humor 2) Tears 3) Limbal Blood Vessels 4) Orbicularis Occuli A. 1, 3 & 4B. 2 &3 C. 1, 2 & 3 D. 3 & 4 - ✔✔C. 1, 2 & 3 The normal cornea is devoid of blood vessels. To provide metabolites, the cornea is nourished by diffusion of nutrients and oxygen by the aqueous humor, tears, and vascular blood vessels in the limbus. (The orbicularis occuli is a muscle in the eyelid whose primary function is lid closure) The increased loss of ability of the crystalline lens to accommodate is called: A. Presbyopia B. Myopia C. Hyperopia D. Aphakia - ✔✔A. Presbyopia Which instrument can provide simultaneous information about the cornea, lids, conjunctiva, lashes, contact lens surface and fit? A. Radiuscope B. Corneoscope C. Slit Lamp D. Keratometer - ✔✔C. Slit Lamp The slit lamp (or biomicroscope) can provide simultaneous information about the cornea, lids, conjunctiva, lashes, contact lens surface and fit. The pre-corneal tear film is composed of three layers which are: A. Lysozyme, oil, lacrimal B. Sebaceous, mucoid, BAK C. Lipid, aqueous, mucinD. Water, mucoid, lysozyme - ✔✔C. Lipid, aqueous, mucin The pre-corneal tear film is composed of lipid, aqueous, and mucin layers. The lipid layer is traditionally thought of as most anterior (front) while the mucin layer is most posterior (back) Transpose the following Rx into minus cylinder form: Rx -4.50 +1.25 x 94 A. -3.25 -1.25 x 4 B. -3.25 -1.25 x 94 C. -4.50 -1.25 x 4 D. -5.75 - 1.25 x 4 - [Show More]

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