Optica Study guides, Class notes & Summaries

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 ...

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...

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

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

a nurse is caring for a client who has hepatic encephalopathy that is being treated with lactulose. the client is experiencing excessive stools. which of the following findings is an adverse effect of the medication? - hypokalemia Lactulose works by stimulating the production of excess stools to rid the body of excess ammonia. These excessive stools can result in hypokalemia and dehydration. a nurse is caring for a client who has emphysema and is receiving mechanical ventilation. the clien...

ABO Certification| ABO -American Board of Opticianry| Actual Test With Complete Solutions (100 Q&A) What are the three layers of the eye?[Correct Ans: - Fibrous tunic, vascular tunic, and nervous tunic What are the five layers of the cornea from anterior to posterior?[Correct Ans: - Epthelium, Bowmans Membrane, Stroma, Descemets Membrane, Endothelium What controls the amount of light entering the eye?[Correct Ans: - Iris How many rods and cones are in the eye?[Correct Ans: - Abou...