Optica Study guides, Class notes & Summaries

American Board of Opticianry (ABO Practice Exams) Questions and Answers A customer complains that his old glasses have better visual acuity than the new glasses (same RX). What should the optician do? A. Return the customer to the refractionist B. Remake the lenses C. Check the base curve D. Put the old lenses in a new frame (Ans: - Check the base curve Within the first few minutes of contact with a new customer you must: A. Find out if the customer has a new prescription B. Gene...

When taking a fundus photo and you see a blue gray halo around the eye, you should move the camera correct answers closer As flurescein dye circulates throughout the eye and sequential pictures are taken,this is known as correct answers Angiograms For the slit lamp photography, in order for an image to be produced in each ocular and in the camera, a is necessary. correct answers Beam Splitter The reticule in the slit lamp and fundus camera is to compensate for the refractive error corre...

ABO -American Board of Opticianry Practice Test With Correct Questions and Answers/Assured Pass 2024 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 (Ans: - d. front curve, back curve, thickness and index Toric transposition shows: a. lens thickness b. power in principal mer...

Focal Length correct answers F.L. = 1 / Diopter Diopter = 1 / F.L (meters) Prism correct answers Δ = Diopter / Meters Diopters = Δ * Meters Meters = Diopters / Δ Prentices Rule correct answers Δ = (Diopters * decentration (mm)) / 10 Diopters = (Δ * 10) / dec (mm) dec (mm) = (Δ * 10) / Diopters Radius of Curvature (Contact Lens) correct answers Radius of Curvature (mm) = 337.5 / (K Reading in Diopters) K Reading in Diopters = 337.5 / (Radius of Curvature in mm) Radius of ...

ETA Fiber Optic Installer Certification - Study Guide Questions with Complete Solutions

The range of wavelengths in the visible spectrum is: a) 100 to 400 nanometers b) 400 to 800 nanometers c) 450 to 650 nanometers d) 400 to 800 meters (m) correct answers b) Depending on which reference is consulted, visible light is in the range of 400 to 800 nanometers. (Be sure to watch the units of measurement given in an answer. "Meters" in answer d should have indicated that it was incorrect.) Immediately on either side of the visible spectrum are the invisible light segments of: a...

a lens focal length may be altered by? - correct answer changing the curvature of one surface what controls the amount of light that enters the eye? - correct answer Iris lights changing direction as it passes from one medium to another is called what? - correct answer refraction meniscus, equiconcave and flat concave are all, what? - correct answer minus lenses what term is used to describe the eyes tendency to TURN from its normal position? - correct answer phoria refr...

A physician writes the following prescription: Atropine 1% gtts 1 OS q. hs x 5d. The prescription is : A. 1 drop Atropine 1% solution by mouth before bed for 5 days B. 1 drop Atropine 1% solution in the left eye every night before bed for 5 days C. 1 mm Atropine 1% ointment on the left eye every night before bed for five days. D. 1 mm Atropine 1% ointment in the left eye every hour for 5 hours. correct answers B. 1 drop Atropine 1% solution in the left eye every night before bed for 5 day...

ETA Fiber Optics Certification Questions with Complete Solutions