Explain the causes of Myopia and Hyperopia
WBBSE
Class X
Life Science
01 (d) Nervous System
02 Mark
2022
| Defect | Cause |
| Myopia (Near-sightedness) | This defect occurs when the eyeball becomes too long or the lens becomes too convex. As a result, light rays focus in front of the retina, causing distant objects to appear blurred. |
| Hyperopia (Far-sightedness) | This defect occurs when the eyeball becomes too short or the lens is too flat. As a result, light rays focus behind the retina, making nearby objects appear blurred. |
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