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Activity 2: Apply your knowledge (8 marks total) Analysis of corrective vision 1. (2 marks) Nearsightedness (myopia) and farsightedness (hyperopia) can be corrected using lenses. Object at ∞ (a) Nearsighted eye Object Object (b) Farsighted eye Copyright © 2005 Pearson Prentice Hall, Inc. Sketch the figure above (or use the one on the worksheet) and draw rays on the images on the right that illustrate how a lens enables (a) an object at infinity to now be focused on the retina in the case of nearsightedness, and (b) an object near the eye to be focused on the retina in the case of farsightedness. 2. (2 marks) What power reading glasses does a person need if their near point is 69 cm and they want to read a computer screen 52 cm away? (Assume that the lens-eye distance is 1.8 cm.) 3. (2 marks) For a person with a far point of 15 cm, what power contact lens (on the eyeball) would be required? 4. (2 marks) For a person with a far point of 15 cm, what power glasses would correct their nearsightedness if the glasses are placed 2.0 cm from the eye?