What is refractive power - Study guides, Class notes & Summaries

Certified Paraoptometric 200 Questions with Correct Answers 100% Verified An optometrist is licensed by which governing body? - Correct Answers State The person generally responsible for grinding or duplicating lenses is the ________. - Correct Answers Optician An instrument worn on the examiners head and used to view the back of the eye is call a/an _______. - Correct Answers Binocular indirect opthalmoscope Kerat (root word) - Correct Answers Cornea A test that does not require re...

Sherpath Eyes and Ears Exam Questions and Answers  The eye is innervated by which intracranial nerves? - III - IV - VI - XI - XII III (3) IV (4) VI (6) What are the internal layers of the eye? - Outer fibrous layer - Subcutaneous layer - Middle layer - Inner layer - Dermal layer Outer fibrous layer Middle layer Inner layer Match the internal eye structure with the relevant function. - Supports the internal eye structures - Major part of the refractive power of...

ABO NCLE EXAM 100 QUESTIONS AND ANSWERS (American Board of Opticianry The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is [Correct Ans: - 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? [Correct Ans: - -.75 -.50 x 120 The Geneva lens measure is designed to measure [Correct Ans: - Lens curvature The focal length of a +5.00 diopter lens is [Correct Ans: - 20 cm

How does refractive power of a lens change if its radius of curvature decreases? - The power increases How does refractive power of a lens change if its radius of curvature increases? - power decreases What is radius of curvature in case of a lens? - Flattener lens= larger radius of curvature. More rounded lens=lesser radius of curvature. How does refractive power of a lens change if its index of refraction increases? - Refractive power will increase Calculate the refractive power o...

When taking seg height measurements, which of the following situations could result in a parallax error? - Patient sitting/ dispenser standing erect Which of the following is not significant in identifying the problem of vertical imbalance? - Patient's age Which of the following elements is NOT critical when determining vertical imbalance? - Lens power in the 180 degree meridian A prism will displace the object being viewed towards its ________. - Apex A prism will bend light toward...

OCANZ Optometry final exam Questions and Answers 100% Correct Answers emmetropia - CORRECT ANSWER-optical state of the eye in which parallel light enters the eye and focuses on the retina without the need for any corrective lenses or accommodation; this is the absence of refractive error and the "normal" or ideal state of the eye ametropia - CORRECT ANSWER-refractive error, "abnormal" optical state of the eye in which parallel light rays enter the eye and focus on an area other t...

OCANZ Optometry final exam Questions and Answers 100% Correct Answers emmetropia - CORRECT ANSWER-optical state of the eye in which parallel light enters the eye and focuses on the retina without the need for any corrective lenses or accommodation; this is the absence of refractive error and the "normal" or ideal state of the eye ametropia - CORRECT ANSWER-refractive error, "abnormal" optical state of the eye in which parallel light rays enter the eye and focus on an area other t...

what muscle elevates the eyelid? - ANSWER-levator palpebrae superioris what are the triangular spaces formed by the junction of the upper and lower lids called? - ANSWER-canthi what is the pathway of tears? - ANSWER-lacrimal gland --> lacrimal ducts --> lacrimal punctum --> lacrimal caniculi --> lacrimal sac --> nasolacrimal duct what does the orbicularis oculi muscle do? - ANSWER-closes the eye when it contracts what is the area called where the bulbar and palpebral conjun...

ABO EXAM 1 | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ | ALREADY GRADED fusion ANSWER: the ability of the brain to merge the two images created by the eye optic chasm ANSWER: the point at which the optic nerves from the inside half of each eye cross over and then project to the opposite half of the brain fibrous tunic ANSWER: sclera and cornea vascular tunic ANSWER: choroid, ciliary body, iris neural tunic ANSWER: retina palprebral fissure D...

ETA Fiber Practice Questions with Complete and Certified Answers Light is electromagnetic energy with ____ frequency and a ______ shorter wavelength Higher then shorter fiber optics transmission takes place in _____ portion of the light spectrum IR A simple fiber optic System consist of what 4 parts Transmitter, fiber optic cable, receiver, connecters What absolute power is Dbm referenced to 1 milliwatt Absolute power in optical fiber is specified as Dbm Attenuation in optic...