ABO NCLE Questions and Answers 100% Solved

ABO NCLE Questions and Answers 100% Solved The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is 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? -.75 -.50 x 120 The Geneva lens measure is designed to measure Lens curvature The focal length of a +5.00 diopter lens is 20 cm The problem of prismatic imbalance at the reading level is called Anisometropia Which of the following indicated the most acute distance vision? 20/15 Which of the following is not a potential correction for vertical balance? Vertex Compensation The ability of the eye to focus on objects at varying distances is known as Accomodation Anisekonia is due to Unequal size retinal images The corner of the eye where the upper and lower lids meet is the Canthus A ptosis crutch is used to 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? +1.00 -1.25 A +2.00 lens decentered in 5 mm beyond the patient's measured pd will create 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 Antimetropia The loss of vision without any apparent defect to the eye is called Amblyopia The ANSI cylinder tolerance for a -.25 cylinder is Plus or minus 7 degrees Which of the following has no power in the 180 degree meridian? +2.00 -2.00 x 90 All specifications being equal which of the following materials will yield the thinnest lens? Polycarbonate If the right temple is angled up the effect on the frame will be to 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 Raise the front Which recreational activity would be best suited with yellow lenses? Hunting Bicentrec grinding is a term synonymous with 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? Decrease the plus power Which RX of the following is the same as the following RX: -3.00 +2.50 x 25 -.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. 1.62 Which of the following materials would make the safest lens in all circumstances? Polycarbonate This agency is primarily concerned with safety in the workplace. OSHA Which of the following RX lenses should never be put into a Z87 frame? 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 -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. +6.12, +8.12 What should you do when a consumer comes in and complains of severe eye pain? Refer them back to the eye doctor The radius of curvature of a six diopter surface is 88.3 mm The effect to the patient of a diopters of base up prism in each eye is No perceived vision A condition that describes an inflammation of the eyelid margins is Blepharitis A Reverse slab off should be applied to the lens with the most Plus Which of the following is not generally a factor in determining vertical imbalance? Sphere power in the 90 degree meridian The best absorber of infrared radiation is a Green Glass lens The spherical equivalent of the lens +1.00 -3.00 x 90 is -.50 A +3.00 lens has the following prismatic effect at 10 mm below the distance optical center: 3 diopters base up If the pad arms are shortened (pushed into the frame), this adjustment will Set the front closer to the face If the eyewires are too far from the cheeks the adjustment to take care of this condition would be to Increase the pantoscopic tilt Which of the frame material is an epoxy resin that is recommended by its manufacturer to be edged with a A box measurement of 5 mm over its marked eye size? Optyl A ptosis crutch is used to give support to the Upper lids Aspheric lens surfaces are most helpful when used which of the following: Cataract lens A lens that is crescent shaped with one of the sides measuring a six diopter radius is known as a Meniscus lens Which of the following instruments would be used to verify slab-off? Lensometer An RX with right minus and left plus is Antimetropic Which of the following is not a type of astigmatism: Compound emmetropic Overall frame measurements are stated in Milimeters The patient is looking 10 mm below the distance optical enter. What is the prismatic effect to the patient from the distance RX at the level? RX: OD -2.00 OS -4.00 ADD +2.00 OU - Vertex 12 mm Flat Top 25 1.00 diopter base down If the RX is OS +1.00 +3.00 x 45 what would be the total power at axis 90? +2.50 A patient that complains that the floor seems to be concave is possibly experiencing excessive Base down prism What would the reading RX be if the following distance RX and bifocal addition are given: RX: +.75 -.25 x 90 ADD +1.00 +1.75 +.25 x 90 Corrected curve lenses have Less oblique astigmatism A patient that complains the floor seems to be convex is possibly experiencing excessive Base up prism A minimum center thickness for a minus industrial lens according to Z87 Standards is 3.0 mm Which of the following bifocals would offer the widest reading area? Executive The Optician has just neutralized an unknown power lens with test lenses. The test lens used to neutralize the power in the vertical in a +2.00 and the test lens used to neutralize the power in the horizontal is a +3.00. What is the RX? -2.00 -1.00 x 90 The term diplopia refers to Double vision The optical cross is a graphic representation used to diagram Total lens power Determine imbalance at the reading level in the following prescription (10 mm reading depth) OD: -4.00 -2.00 x 90 OS: -1.00 -3.00 x 180 1 diopter The refractive index to which optical tools and gauges are calibrated? 1.53 A minus 5 diapter lens decentered in 2 mm beyond what is called for 1/10 achieve the correct PD creates 1 diopter of base out prism Double D lens area an advantage for presbyobes that Work over their heads The focal length of a +2.00 diapter lens is 50 cm Increasing the diameter of a lens always increases its Thickness In the boxing system a A measurement represents Lens width A 10.00 diapter surface measured with a lens clock has a radius of curvature equaling 53 mm An uncut lens must be at least ___ mm in diameter to allow the cutting of a 52 mm round lens decentered 4 mm in 60 A -3.00 powered lens has a base curve of +4.25. What is the ocular curve? -7.25 When ordering a six inch temple, its corresponding millimeter value is which of the following? 150 mm What is the focal length of a 2 diapter lens? 500 mm Wavelengths are measured in Nanometers Which of the following has the shortest and therefore most harmful wavelength? UVC When two light waves are "in phase" they will? Compound one another The cylinder axis tolerance for a 1.00D cylinder according to ANSIZ 80.1 is Plus or minus 2 degrees A plus lens decentered "out" will result in a finished lens which is Thicker temporally A minus lens decentered "out" will result in a finished lens which is Thicker nasally An uncoated normal plastic lens will reflect approximately ___% of light. 8% A lens having a minus curve on both front and back is called Biconcave Give the RX +1.00 +1.00 x 45, how much of the +1.00 cylinder is in effect at axis 90? 50% 80 degrees from specified axis, a cylinder will show 97% of its power The type of patient often bothered by large magnified eye look is a Hyperope A Box-o-graph is used to measure lenses for Size A presbyopic electrician that works on overhead wiring would benefit most from Double D A presbyopic golfer, when addressing the ball, is troubled by the placement of the normal bifocal. Which of the following would pose the best solution as a recreational golf glasses? Round segment rotated to the temporal side of the lens. Which of the following is NOT one of the 6 muscles responsible for the movement of the eye? Internal rotator The index of refraction of spectacle crown glass is 1.523 Which of the following glass lenses is a fused bifocal? Straight top The P.D. written on the order is mistakenly noted as 70 mm, when the actual measurement should be 66 mm. What unwanted prism would be found if the distance prescription is O.V. +5.00 sphere? 1 diapter base out/each eye If the RX is +2.00 -4.00 x 45, it would be necessary to decenter the lens ___ to create 1 diaptor of base out prism. Not possible The element in photogray lenses that is responsible for the lightening and darkening reaction is? Silver halide Which of the following would provide the greatest benefit to a night driver? Anti-reflective coating A minus lens moved downward from the primary position will result in Base up prismatic effect A patient refracted at 15 mm is prescribed a -10.00 sphere. The dispense finds that the actual fitting distance will be at 10 mm. What should the compensated lens power be? -9.50 A lens which reads +3.00 -2.00 x 180 is decented in 6 mm too much. How much horizontal prism is created by this error? 1.8 diapters base in If a pair of lenses are ground with 2 diapters of base in prism in each lens, the patient will experience 4 diaprters of prism base in Given a lens with focal length of 1000 mm / determine the power of the lens One diapter Which wavelengths of light have been indicated as contributors to the onset of catraracts? 300 - 380 mm The refractive astigmatism indicated by the RX +1.50 -1.00 x 180 is Compound Hyperopic