Higher Tier Only: Correcting Vision Problems with Lenses
Part of Lenses & Images — GCSE Physics
This higher tier covers Higher Tier Only: Correcting Vision Problems with Lenses within Lenses & Images for GCSE Physics. Revise Lenses & Images in Waves for GCSE Physics with 13 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 11 of 14 in this topic. This section is most useful once the core foundation idea is secure, because it adds the detail that pushes answers higher.
Topic position
Section 11 of 14
Practice
13 questions
Recall
15 flashcards
🎓 Higher Tier Only: Correcting Vision Problems with Lenses
Short-sightedness (myopia): The lens of the eye is too powerful (too converging), causing images to focus in front of the retina. Corrected with a concave (diverging) lens, which spreads rays slightly before they enter the eye, so the eye lens can focus them on the retina.
Long-sightedness (hyperopia): The lens is not powerful enough, causing images to focus behind the retina. Corrected with a convex (converging) lens, which converges rays slightly before they enter the eye, helping the eye lens to focus the image on the retina.
This is testable as a describe/explain question: you need to state the problem (where rays focus), the type of corrective lens used, and why it works.
Quick Check: A student places an object between a convex lens and its focal point. Describe the image formed.
The image is virtual (cannot be projected on a screen), upright, and magnified. This is the principle of a magnifying glass — the object is placed inside the focal length to produce a larger, upright virtual image on the same side as the object.