What unit of measurement is used in refractive power?

Question

What unit of measurement is used in refractive power? What is considered as the entry point of the visual system? What absorbs photon?

Expert · Accepted Answer

9 The retina Refraction:      -   necessary to focus light rays     -   accomplished by cornea and lens Accommodation:     -   process in which lens changes shape, altering its refractive power     -   Distance from object determines how much we need to bend ray of light for it to          come into focus Emmetropia:     -   happy condition of no refractive error (contacts/glasses if you don't do that         naturally)     -   Rays are converging at same point (cornea is working with lens & refractory index          to bend the rays of light to the right amount)     -   This doesn't happen for most of us         o  Most of us are myopic today (esp. Asia)                 The system is not refracting right - the eye is too large, the rays i

What unit of measurement is used in refractive power?

What unit of measurement is used in refractive power? Description

School: Boston University

Department: Psychology

Course: Psychology of Perception

Professor: Rucci

Term: Winter 2016

Tags: VisualSystem, Photoreceptors, rods, cones, Opsin, pigments, accommodation, refraction, Emmetropia, myopia, hyperopia, astigmatism, presbyopia, Cataracts, retina, and Fundus

Cost: 25

Name: Perception Week Six Notes

Description: These notes cover exam material.

Uploaded: 10/14/2016

2 pages

PS 222, Week One Notes

4 pages

Psychology of Perception (PS 222) Week Two Notes

4 pages

Psychology of Perception, Week 3 Notes

5 pages

Psychology of Perception

6 pages

Psychology of Perception Week Five Notes

6 pages

Midterm Study Guide

3 pages

Perception, Week 7 Notes

5 pages

Perception Week 8

7 pages

Perception Week 10

5 pages

Middle Vision and Color Processing 10

1 pages

11 Color Processing PS 222

1 pages

Space and Depth Perception

2 pages

Motion Perception

3 pages

Week 14 Attention

11 pages

Final Exam Study Guide

40 pages

Notes for Midterm 3

2 pages

PS 222, Week One Notes

4 pages

Psychology of Perception (PS 222) Week Two Notes

4 pages

Psychology of Perception, Week 3 Notes

5 pages

Psychology of Perception

6 pages

Psychology of Perception Week Five Notes

6 pages

Midterm Study Guide

3 pages

Perception, Week 7 Notes

5 pages

Perception Week 8

7 pages

Perception Week 10

5 pages

Middle Vision and Color Processing 10

1 pages

11 Color Processing PS 222

1 pages

Space and Depth Perception

2 pages

Motion Perception

3 pages

Week 14 Attention

11 pages

Final Exam Study Guide

40 pages

Notes for Midterm 3

1 pages

Space and Depth Perception

2 pages

Motion Perception

What unit of measurement is used in refractive power?
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