Abo 2024 stuvia Study guides, Class notes & Summaries

When discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index - ANSWER d. front curve, back curve, thickness and index Toric transposition shows: a. lens thickness b. power in principal meridians c. the power of the ADD d. the lens diameter - ANSWER b. power in principal meridians Increa...

If the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - ANSWER False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: A. The frame is too small B. The bridge fit is tight C. Pressure is being applied by the temple shafts anterior to the ear. D. Pressure is being applied on the very tips of the temples. - ANSWER Pr...

What type of visual error is indicated by this Rx? Rx +2.00 -1.00 x 090 a. simple hyperopia b. compound hyperopic astigmatism c. compound myopic astigmatism d. mixed astigmatism - ANSWER b. compound hyperopic astigmatism Increasing the diameter of a minus power lens always increases its: a. vertex power b. center thickness c. weight d. refractive index - ANSWER c. weight The optical center of a round segment is located: a. at the very top of the segment b. in the geometric cente...

Single Vision - ANSWER corrects for one distance Multifocal - ANSWER Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER lens having two focus strengths Trifocal - ANSWER pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER obtained at the center of an optical lens by producing a difference in edge thickness, either by grinding the back surface at an angle to the front surface during lens surfacing or, if the lens has sufficient power...

The ability of the eye to focus on objects at different distances - ANSWER Accommodation Fresnel optics - ANSWER Press on prism Frame material that resist stretching with heat - ANSWER Nylon Bridge type that spreads weight over the greatest area - ANSWER Saddle Amount of jump image is not affected by - ANSWER The seg inset Double vision - ANSWER Diplopia Modern AR coated lenses transmit how much light - ANSWER 99.5% Shortest wavelength - ANSWER Violet The condition where ...

ABO Exam 2023-2024 Questions and Answers (Graded A)ABO Exam 2023-2024 Questions and Answers (Graded A)ABO Exam 2023-2024 Questions and Answers (Graded A)ABO Exam 2023-2024 Questions and Answers (Graded A)ABO Exam 2023-2024 Questions and Answers (Graded A) Name the 3 types of tunics of the eye, and what areas of the eye they consist of. - ANSWER-1. Fibrous: cornea and sclera (outer protective coating) 2. Vascular: iris, ciliary body and choroid (uveal tract) 3. Neural: retina During acc...

Sclera - ANSWER Tough, white outer coat of the eyeball myopia - ANSWER nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it reflection - ANSWER light that bounces back refraction - ANSWER when the direction of light changes as it passes from one medium to another(bending of light) presbyopia - ANSWER Age of 40 need reading glass crystalline lens diminishes frame difference - ANSWER the difference betweeen ...

Name the 3 types of tunics of the eye, and what areas of the eye they consist of. - ANSWER 1. Fibrous: cornea and sclera (outer protective coating) 2. Vascular: iris, ciliary body and choroid (uveal tract) 3. Neural: retina During accommodation, what 3 things do the eyes do? - ANSWER 1. Ciliary muscle relaxes allowing for thickening of crystalline lens 2. Eyes converge 3. Pupils constrict What happens with Aniseikonia? - ANSWER The ocular image of an object with one eye differs in ...

How do you lower the front of the frame? - ANSWER Move nose pads further apart or increase pantoscopic tilt (2 degrees = 1mm) If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that? - ANSWER Pressure is being applied by the temple shafts anterior to the ear. When the wearers PD is less than the frame PD what should you do? - ANSWER Positive face form The new bifocal wearer must: - ANSWER Drop the eyes to read a book When the frame fr...

ABO Exam Questions and Answers (Graded A)ABO Exam Questions and Answers (Graded A)ABO Exam Questions and Answers (Graded A)ABO Exam Questions and Answers (Graded A)ABO Exam Questions and Answers (Graded A)The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - ANSWER-Six The fibrous tunic is comprised of the: - ANSWER-Sclera and cornea Fusion occurs: - ANSWER-In the brain The aqueous fluid is cont...