Rupal suffers from myopia. Where would the image form in her eye? Name the type of lens that is generally used to correct myopia. (c) Rupal underwent cataract surgery and her eye lens was replaced with an artificial lens with a fixed focal length, made of a plastic material, silicone. State one likely visual disadvantage that Rupal is likely to experience as compared to a person who has normal eyesight.

(a) Image Formation in Myopia:
Rupal, suffering from myopia, experiences nearsightedness. In myopia, the image forms in front of the retina rather than directly on it. This occurs because the eyeball is too long or the cornea is too curved, causing light to converge before reaching the retina. Therefore, the image would form in front of the retina in Rupal’s eye.

(b) Lens Used to Correct Myopia:
To correct myopia, a diverging or concave lens is used. This type of lens helps to spread out the incoming light rays before they enter the eye, allowing the focal point to shift backward onto the retina. Concave lenses are prescribed to myopic individuals to correct their vision for distant objects.

(c) Visual Disadvantage after Cataract Surgery with Silicone Lens:
The likely visual disadvantage that Rupal may experience after undergoing cataract surgery with a silicone lens (which has a fixed focal length) is a potential loss of accommodation. Accommodation refers to the eye’s ability to adjust its focal length to focus on objects at different distances.

Unlike a natural lens, which can change shape to adjust its focal length for different distances, a fixed-focus artificial lens, such as the one made of silicone, cannot dynamically adjust. This means that Rupal might have difficulty focusing on objects at various distances without the natural flexibility of accommodation. While she may have clear vision for a specific distance (the focal length of the implanted lens), she might require additional corrective lenses (glasses) for near or far vision, depending on the fixed focal length of the artificial lens.