NCLE Exam Bundle Questions and Answers With Complete Solutions

posterior apecal radius - ANSWER-this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - ANSWER-occurs wh...

Which of the following prescriptions indicates against-the-rule astigmatism? a)-4.50 +1.00 x75 b)-4.50 +1.00 x 180 c)-4.50 -1.00 x 165 d)4.50 -1.00 x 180 - ANSWER-a)-4.50 +1.00 x75 When a keratometer is being calibrated, which of the following targets will provide the most reliable result? ...

Flat Fluorescein Pattern - ANSWER-Bright green pooling on diameter of lens, very faint green in center Against-the-rule Astigmatism Pattern - ANSWER-Bright green pooling horizontally, faint green pooling vertically With-the-rule Astigmatism Pattern - ANSWER-Bright green pooling vertically, fai...

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 foc...

Which auxiliary trial lens will extend the keratometer range to approximately 30.00D - ANSWER--1.00 A smooth optical surface and Metabolic nutrients to the epithelium - ANSWER-Pre-corneal year film Which auxiliary trial lens extend the keratometer range to approximately 61.00D - ANSWER-+1.25 ...

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 changi...

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 Astigmat...

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-tori...

What are the disadvantages of Soft Lenses? - ANSWER-Doesn't correct irregular astigmatism, favors deposit formation Which test measures the quantity of tears? - ANSWER-The Schirmer test. What are good results for the Schirmer test? - ANSWER-15 mm in 5 minutes. What are dry eye results for ...

Which term refers to a sensitivity to light? A. Presbyopia 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 astigmati...

In against the rule astigmatism, the steepest corneal meridian: A. Is at or near 45 degrees B. Is at or near 90 degrees C. Is at or near 135 degrees D. Is at or near 180 degrees - ANSWER-D. Is at or near 180 degrees. The following RX represents: OD: +2.00 PSH= 20/20 OS: -3.00-2.00x180 = 20...

anterior chamber - ANSWER-the area bounded in front by the cornea and in the back by the lens and filled with aqueous aqueous - ANSWER-a clear, watery solution in the anterior and posterior chambers artery - ANSWER-the vessel supplying blood to the eye canal of schlemm - ANSWER-the passagew...

antihistamines - ANSWER-are beneficial when treating allergies and cold symptoms because they dry out the mucous membranes of the nasal passage. However, this may also lead to dehydration of the tear film, they are also been known to slow down the blink rate and increase corneal sensitivity. agai...

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 comp...