1. The Eye and Optical Illusions Chatfield Senior High

2. Parts of the Eye

3. Blind Spot Test

4. Nearsightedness (Myopia) You can see near, but need eyeglasses for far vision Caused by too thick of lens. Corrected by a divergent (concave) lens. You can see near, but need eyeglasses for far vision Caused by too thick of lens. Corrected by a divergent (concave) lens.

5. Farsightedness (Hyperopia) Farsighted is that you see far, but need glasses to read. This is corrected by a convex lens (bottle-cap glasses) Farsighted is that you see far, but need glasses to read. This is corrected by a convex lens (bottle-cap glasses)

6. Your eye test

7. Colorblindness

8. Colorblindness

9. Colorblindness

10. Astigmatism Blurring of vision due to irregularly shaped lens Blurring of vision due to irregularly shaped lens

11. Glaucoma Pressure in your eye damages the optic nerve causing vision blackouts Pressure in your eye damages the optic nerve causing vision blackouts

12. Glaucoma

13. Macular Degeneration Center of retina degrades due to age.

14. Optical Illusions

20. Optical Illusions (Eyetricks.com)

21. Optical Illusions

24. The Paomnnehal Pweor of The Hmuan Mnid The Paomnnehal Pweor of The Hmuan Mnid The Paomnnehal Pweor of The Hmuan Mnid The Paomnnehal Pweor of The Hmuan Mnid By John Derbyshire By John DerbyshireJohn DerbyshireJohn Derbyshire Aoccdrnig to rscheearch at Cmabrigde Uinervtisy, it deosn’t mttaer in what oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it wouthit porbelms. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Aoccdrnig to rscheearch at Cmabrigde Uinervtisy, it deosn’t mttaer in what oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it wouthit porbelms. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.

25. Optical Illusions

27. MC Escher