Physics › Section S · Vision, instruments, and wave optics › Topic S.1
The eye, vision correction, and colour
Your eye is a living optical instrument that refocuses itself many times a minute. The thin-lens physics you already know explains how it forms an image, why so many people need glasses, and how three kinds of cell produce every colour you see.
In this topic
- The eye as an optical instrument
- Power in dioptres
- Accommodation, near point and far point
- Worked example: an image on the retina
- Myopia: short sight
- Worked example: correcting short sight
- Hyperopia, astigmatism and surgery
- Worked example: reading lenses
- Rods, cones and colour vision
- The colour of objects and lights
- Common mistakes to avoid
- Key takeaways
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