ABO NCLE Exam Questions with Correct Answers

ABO NCLE Exam Questions with Correct Answers 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 - AnswerAnisometropia Which of the following indicated the most acute distance vision? - Answer-20/15 Which of the following is not a potential correction for vertical balance? - Answer-Vertex Compensation The ability of the eye to focus on objects at varying distances is known as - AnswerAccomodation Anisekonia is due to - Answer-Unequal size retinal images The corner of the eye where the upper and lower lids meet is the - Answer-Canthus A ptosis crutch is used to - Answer-Drooping lid In neutralizing a lens of unknown power your first reading is +1.00 the next reading that focuses the cylinder target is -.25. What is the RX? - Answer-+1.00 -1.25 A +2.00 lens decentered in 5 mm beyond the patient's measured pd will create - Answer-1 diopter base in prism Which of the following conditions is indicated by the following RX: O.D. +1.00 -1.00 x 180 O.S. -2.00 -.50 x 45 - Answer-Antimetropia The loss of vision without any apparent defect to the eye is called - Answer-Amblyopia The ANSI cylinder tolerance for a -.25 cylinder is - Answer-Plus or minus 7 degrees Which of the following has no power in the 180 degree meridian? - Answer-+2.00 -2.00 x 90 All specifications being equal which of the following materials will yield the thinnest lens? - Answer-Polycarbonate If the right temple is angled up the effect on the frame will be to - Answer-Lower the right side If the adjustable pads on a metal frame are re-positioned downwards into the bridge of the frame the resulting effect on the fit will be to - Answer-Raise the front Which recreational activity would be best suited with yellow lenses? - Answer-Hunting Bicentrec grinding is a term synonymous with - Answer-Slab off If a patient is wearing a +12.00 diopter sphere and the adjustment is made to move them closer to the eyes, what effect will that have on the effective power of the lens? - Answer-Decrease the plus power Which RX of the following is the same as the following RX: -3.00 +2.50 x 25 - Answer-- .50 -2.50 x 115 Given a material of unknown index and the speed of light within that material as 10100 miles per second. Compute the index of refraction for that material. - Answer-1.62 Which of the following materials would make the safest lens in all circumstances? - Answer-Polycarbonate This agency is primarily concerned with safety in the workplace. - Answer-OSHA Which of the following RX lenses should never be put into a Z87 frame? - Answer-None of the above (not 2 mm nor 3 mm) If your lensometer reads +.25 with no lens, a lens that measures -3.00 -1.50 x 180 is actually - Answer--2.75 -1.50 x 180 When verifying an ADD on a 1 piece bifocal with a lens clock, a +2.00 ADD would clock _____ in the distance and _____ in the segment. - Answer-+6.12, +8.12 What should you do when a consumer comes in and complains of severe eye pain? - Answer-Refer them back to the eye doctor The radius of curvature of a six diopter surface is - Answer-88.3 mm The effect to the patient of a diopters of base up prism in each eye is - Answer-No perceived vision A condition that describes an inflammation of the eyelid margins is - Answer-Blepharitis A Reverse slab off should be applied to the lens with the most - Answer-Plus Which of the following is not generally a factor in determining vertical imbalance? - Answer-Sphere power in the 90 degree meridian The best absorber of infrared radiation is a - Answer-Green Glass lens The spherical equivalent of the lens +1.00 -3.00 x 90 is - Answer--.50