Optical MathPregunta 92 de 100
A -6.00 D lens must produce 3 prism diopters. How far must it be decentered (Prentice's rule)?
a.0.5 cm (5 mm)
b.3 cm
c.18 cm
d.6 cm
Explicación
Decentration = prism / power = 3 / 6.00 = 0.5 cm, which equals 5 mm of decentration from the optical center.
Practica las 100 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- Using Prentice's rule, how much prism is induced when a +4.00 D lens is decentered 5 mm?
- Transpose -1.75 +1.25 x 060 to minus-cylinder form.
- A frame has an A measurement of 52 mm, DBL of 18 mm, and the patient's PD is 62 mm. What is the total decentration for both lenses combined?
- With a 34 mm effective diameter and 4 mm per-lens decentration, what is the approximate minimum blank size?
- A patient is refracted at a 12 mm vertex with -10.00 D, but the frame sits at 16 mm. Which way does the effective power change, requiring compensation?
- What is the combined horizontal prism when the right lens gives 2 prism diopters base out and the left lens gives 1 prism diopter base out?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con ABO (American Board of Opticianry) Certified Optician Exam · Cómo revisamos