A person can see near objects clearly through his eyes but cannot see distant objects clearly. The possible reason(s) for this defect could be: 1. Excessive curvature of the eye lens. 2. The eye-ball has become too small. 3. The focal length of the eye le
Nearsightedness, or myopia, results from excessive curvature of the eye lens or elongation of the eyeball, making it difficult to see distant objects clearly because parallel rays focus in front of the retina.