Myopia is a defect in human vision where an image of a

Myopia, also known as near-sightedness, is a common refractive defect of vision where a person can see nearby objects clearly but finds distant objects blurry [1][2]. This condition occurs because the eyeball is too long or the cornea is too curved, causing light rays from a distant object to converge and focus at a point in front of (before) the retina rather than directly on its surface [1]. Consequently, the image formed on the retina is out of focus [4]. In contrast, hypermetropia (far-sightedness) involves images of nearby objects being focused beyond the retina [1]. Myopia is typically corrected using a concave lens of suitable power, which diverges the incoming light rays so that the focal point is shifted back onto the retina [1][3].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 10: The Human Eye and the Colourful World > What you have learnt > p. 170
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 10: The Human Eye and the Colourful World > 10.2 DEFECTS OF VISION AND THEIR CORRECTION > p. 162
3. [4] https://www.ncbi.nlm.nih.gov/books/NBK470669/
4. [3] Science , class X (NCERT 2025 ed.) > Chapter 10: The Human Eye and the Colourful World > Figure 10.3 > p. 164