ABO EXAM PACKAGE DEAL-SOLVED

150 mm - ANSWER-When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - ANSWER-What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - ANSWER-Wavel...

Change a bifocal Rx to a single vision Rx - ANSWER-Add the bifocal power to the sphere powers. OD: -0.50 OS: -0.25-0.25x172 Add: +1.75 Turns into- OD: +1.25 OS: +1.50-0.25x172 Anisometropia - ANSWER-There is a difference of 3 diopters between both eyes; when the vision of the eyes differs...

Corpuscular - ANSWER-the theory which explains light as a stream of invisible bundles of energy Photons - ANSWER-the visible bundles of energy Electromagnetic Theory - ANSWER-The theory which explains light as moving in a series of wave pulsations. 186,000 miles per second - ANSWER-the spee...

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, t...

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. greet them - ANSWER-When a patient walks into your office you should: a. greet them b. tell them to wait a minute c. ignore them d. wait for them to approach you d. all of the above - ANSWER-When answering the phone you should: a. thank the patient for calling b. identify yourself c...

The speed of light is - ANSWER-186,000 miles / second The wavelength of Red is about - ANSWER-660 nanometers (NM) In a minus powered lens light rays ____ and come to a focal point ____ the lens. - ANSWER-Diverge, in front of Light rays pass through a lens and converge at a point 50cm behind...

vitreous humor - ANSWER-the transparent, colorless mass of soft, gelatinous material which fills the eyeball behind the lens: 1.42 - ANSWER-the index of refraction of the crystalline lens is: 1.37 - ANSWER-the cornea has an index of refraction of: 6 - ANSWER-the extra-ocular muscles are ins...

Most ophthalmic frames today are measured utilizing the boxing system of measurement. In this system the B measurement represents the ______. A. lens difference B. the lens width C. the lens depth D. the effective diameter - ANSWER-C. the lens depth The boxing method of measurement is espe...

Lensometer - ANSWER-Optical instrument used to verify lens from a known Rx as well as neutralizing a lens from unknown Rx Adjustable eyepiece - ANSWER-Part of a lensometer that must be first adjusted; power drum must be set to 0 Auxiliary prism ring - ANSWER-Part of a lensometer that expands t...

ABO Advanced Formulas Solved

Aberration + types of abberation - ANSWER-deviation from a single focus of light rays from one source; failure to bring light rays to a single focal point two types: chromatic and monochromatic Accomodation - ANSWER-the ability of the eye to adjust focus for varying distances Achromatic - ANS...