Radius of curvature - Study guides, Class notes & Summaries

A-LEVEL OCR ADVANCING PHYSICS B SUPERSET WITH QUESTIONS AND ANSWERS AND WELL VERIFIED ANSWERS [GRADED A+] ACTUAL 100% Curvature - ANS---The amount by which a line is curved. Radius - ANS---The curvature is the reciprocal of the _____. . Focal Length - ANS---The power of a lens is the reciprocal of its _____ _____. Focal Length - ANS---The distance between the centre of a lens and its focus. Plane - ANS---_____ wave-fronts are seen to have negligible curvature. Rays - ANS---When ligh...

Certified Ophthalmic Assistant Exam with 100%Correct Answers 2024. How are systemic medications administered? - Answer Orally, injection (subcutaneously or intramuscularly) or intravenously How should drops be properly instilled into a patient's eye? - Answer Into the lower cul de sac (lower fornix) What does the term idiosyncrasy refer to with ophthalmic drugs? - Answer A bizarre, peculiar reaction to a drug that is not commonly seen, such as tremors, excitability or even collapse What...

posterior apecal radius - ANSWER-this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - ANSWER-occurs when the posterior radius of curvature is decreased (i.e. 8.4 to 8.1 mm) flatter base curve - ANSWER-occurs when the posterior radius of curvature is increased (i.e.8.1 to 8.4 mm) bicurve lens - A...

base curve - Answer-refers to the radius of curvature of the central posterior surface of the lens. It may be expressed in diopters of surface power (D) or in millimeters (mm) of radius or curvature. optical zone - Answer-the chord diameter over which the base curve extends on the posterior surface of the contact lens, described in millimeters secondary or intermediate curves - Answer-lies between the base curve and the peripheral curve on the posterior lens surface, usually 0.70mm to 1.50m...

optic zone - ANSWER-the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius - ANSWER-this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - ANSWER-occurs when the posterior radius of curvature is decreased ...

optic zone - the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius - this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - occurs when the posterior radius of curvature is decreased (i.e. 8.4 to 8.1 ...

1. The sagittal depth of a rigid gas permeable contact lens can be altered without changing the diameter by: A. Changing the power B. Changing the edge design C. Changing the radius of curvature of the anterior optical zone D. Changing the radius of curvature of the posterior optical zone -AnswerThe answer is D. The posterior optical zone will directly affect the lens to cornea relationship of a rigid gas permeable lens. If the posterior optical zone is steepened, it will increase the s...

How are systemic medications administered? - Answer-Orally, injection (subcutaneously or intramuscularly) or intravenously How should drops be properly instilled into a patient's eye? - Answer-Into the lower cul de sac (lower fornix) What does the term idiosyncrasy refer to with ophthalmic drugs? - Answer-A bizarre, peculiar reaction to a drug that is not commonly seen, such as tremors, excitability or even collapse What is the name of the instrument used to neutralize lenses? - Answer-Le...

optic zone -Answer the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius -Answer this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve -Answer occurs when the posterior radius of curvature is decreased (i.e...

A-LEVEL OCR ADVANCING PHYSICS B SUPER SET [WELL IDENTIFIED] REAL!!REAL!!! Curvature - ANS---The amount by which a line is curved. Radius - ANS---The curvature is the reciprocal of the _____. Rays - ANS---When light is modelled as _____, the light travels in lines. Wavefronts - ANS---When light is modelled as _____, the light travels as parallel lines/bars, perpendicular to their motion. D - ANS---The unit for dioptres. Focal Length - ANS---The power of a lens is the reciprocal of its...