Question

Describe with the help of a labeled ray diagram, the defect of hypermetropia and how can we correct this defect.

Answer 1

Hypermetropia can be otherwise called as long-sightedness. It is defined as the defect of the human eye in which a person can visualize clearly the bodies at higher distances from it. Although it cannot visualize the nearby objects with clarity. This will help you in answering this question.

Complete step-by-step solution
Hypermetropia can be otherwise called long-sightedness. It is a common eye issue where the nearby bodies can’t be viewed clearly, but the vision will be perfect when looking at things at a greater distance. If your eyes are sometimes tired and also you have issues in focusing on bodies close to your eyes. These are the indications that you may have hypermetropia. One of the reasons will be that your eyeballs may be shorter than original. Because of this, the retina will be closer to the pupil and thus the light will travel past the retina. A normal eye can be usually around $23mm$ in length. Therefore an eye that is hypermetropic will be shorter than $23mm$. This hypermetropia can be corrected using some methods. One is by using spectacles having a convex lens, which can converge and shift the image to the retina from the beyond. Some people use contact lenses and also undergo laser surgery in order to make this corrected. Therefore the answer to the question has been obtained.

Note: In another way we can also have hypermetropia if our cornea is flat. The cornea must be having some curvature in order to direct light onto the retina. Both of these conditions are the factors causing the long-sightedness that results in light to travel past the retina. This condition causes blurry vision and can affect your daily life.