What defect of vision occurs when the image is formed in front of the retina?Question 27Select one:a.Presbyopiab.Astigmatismc.Hypermetropiad.Myopia

To determine which defect of vision occurs when the image is formed in front of the retina, let's analyze the options:

1. Myopia (d): This is also known as nearsightedness. In myopia, light rays entering the eye focus in front of the retina. This condition makes it difficult to see distant objects clearly.

2. Hypermetropia (c): Known as farsightedness, in this condition, light rays focus behind the retina, making it difficult to see nearby objects clearly.

3. Astigmatism (b): This defect occurs due to an irregular shape of the cornea or lens, causing blurry vision at any distance, but does not specifically relate to the image focusing in front of or behind the retina.

4. Presbyopia (a): This is an age-related condition that affects near vision as the lens loses elasticity, but it does not specifically refer to the image being focused in front of the retina.

Conclusion

The defect of vision that occurs when the image is formed in front of the retina is Myopia (d).