NCLE Advanced Exam Questions and Answers Rated A

NCLE Advanced Exam 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 ...

NCLE Advanced Exam 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 RX -3.00 -2.50 X 180 - ✔✔Lenticular astigmatism Ocular signs of aging include A. Tear film abnormalities B.Reduced lid elasticity C.Lens opacities D.Loss of accommodation - ✔✔Tear film abnormalities Reduced lid elasticity Lens opacities Loss of accommodation The pre-corneal tear film provides: - ✔✔A smooth optical surface, metabolic nutrients to the epithelium What are the layers of the cornea? - ✔✔Epithelium, bowmans layer, stroma, Descemet's membrane, endothelium The normal cornea is transparent due to the pump action creating proper fluid balance. Which layer of the cornea is most responsible for maintaining this function? - ✔✔endothelium A normal tear break-up time is: - ✔✔10-12 seconds A whitish haze in the peripheral corneal stroma which does not stain and is often seen in the elderly is known as? - ✔✔Arcus senilus Patients with keratitis sicca are more prone to? - ✔✔Secondary infections Upon removal of the crystalline lens the patient is? - ✔✔Aphakic The following are RX represents OD+2.00= 20/20 OS-3.00-2.00X180=20/20 - ✔✔Anisometropia This patient OD+2.00= 20/20 OS-3.00-2.00X180=20/20 will best achieve stereopsis with which of the following modalities? A. Contact lenses B.Spectacles C. IOL D.Bifocals - ✔✔Contact lenses Tom spectacles with the power of -12.00+0.50X 90, 10 mm in front of his cornea. The likely soft contact lens prescription for Tom would be - ✔✔A -10. 50 dpt The keratometer is an instrument used to measure? - ✔✔corneal curvature The average lifespan of a corneal epithelium cell from mitosis through maturation and desquamation most nearly approximates - ✔✔One Week Which auxiliary a trial lens will extend the keratometer range to approximately 61.00D? - ✔✔+1.25 D Wearing lenses in high altitudes and dry environments may result in complaints of all but the following? A.Photophobia B. Chalazion C.Grittiness D.Burning sensation - ✔✔Chalazion The first line of defense in the protective system of the eye is formed by the? - ✔✔Eyelids Transient keratometric mire distortion is usually due to: - ✔✔Pre - ocular tear film In against the rules astigmatism the steepest corneal meridian is in - ✔✔Is at or near 180° An inability to bring all the keratometer mires into focus at the same time may indicate - ✔✔Irregular astigmatism In an alignment lid attachment GP fit, the fluorescein in pattern should show? - ✔✔A thin, even layer of fluorescein and less than 180° of bearing in the mid periphery In a GP wearer, an arcuate stain on the cornea may be due to ? - ✔✔Poorly blended secondary curves In a Schirmer 1 test - ✔✔A patient with an an unanesthetized eye and normal to your output should wait at least 15 mm of the filter paper in five minutes The most powerful refractive surface of the eye is the - ✔✔Cornea Which keratometer reading indicates with the rule astigmatism? A. 45.00 @ 175/ 44.50 @85 B. 48.00 @ 45/46.50 @135 C.44.50 @15/44.75 @ 105 D.46.00 @ 180/46.00 @ 90 - ✔✔44.50 @15/44.75 @ 105 When evaluating tear film break up time - ✔✔A break-up time of less than 10 seconds may preclude success with contact lenses The preservatives in contact lens solution - ✔✔Is formulated to keep micro organisms from multiplying in a bottle of a contact lens solution after it has been opened Results of a refraction show a patient to see best at distance with the power of a +1.25+1.00X 95, and at near where the power of +2.50+1.00X 95. What is the ad power - ✔✔+1.25D A pre-presbyopic myopic patient who is still able to read with single vision glasses may find that - ✔✔They are unable to see fine print when they're fit with contact lenses