26 VISION AND OPTICAL INSTRUMENTS
Figure 26.1A scientist examines minute details on the surface of a disk drive at a magnification of 100,000 times. The image was produced using an electron microscope.
(credit: Robert Scoble)
Learning Objectives
26.1. Physics of the Eye- Explain the image formation by the eye.
- Explain why peripheral images lack detail and color.
- Define refractive indices.
- Analyze the accommodation of the eye for distant and near vision.
26.2. Vision Correction - Identify and discuss common vision defects.
- Explain nearsightedness and farsightedness corrections.
- Explain laser vision correction.
26.3. Color and Color Vision - Explain the simple theory of color vision.
- Outline the coloring properties of light sources.
- Describe the retinex theory of color vision.
26.4. Microscopes - Investigate different types of microscopes.
- Learn how image is formed in a compound microscope.
26.5. Telescopes - Outline the invention of a telescope.
- Describe the working of a telescope.
26.6. Aberrations - Describe optical aberration.
26 Vision and Optical Instruments
Explore how the image on the computer screen is formed. How is the image formation on the computer screen different from the image formation in
your eye as you look down the microscope? How can videos of living cell processes be taken for viewing later on, and by many different people?
CHAPTER 26 | VISION AND OPTICAL INSTRUMENTS 929