What is the far point of a normal human eye? How does this differ in a person with myopia?
Generated by claude-sonnet-4-6 · 2026-06-26 01:08 · grounding rag
Model Answer
The far point of a normal human eye is infinity, meaning a normal eye can see objects clearly up to an infinite distance.
In a person with myopia (near-sightedness), the far point is nearer than infinity — only a few metres away. This is because the image of a distant object is formed in front of the retina instead of on it.
Source: Chapter 10, Section 10.1.1 & 10.2(a)
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Explanation
- Far point of normal eye = infinity — this is a direct, frequently asked fact; must be stated clearly.
- For myopia, the key phrase is "nearer than infinity" — examiners expect this specific contrast.
- Mentioning that the image forms in front of the retina (not on it) strengthens the answer and may fetch the second mark.
- Avoid writing lengthy descriptions of causes or corrections — this is a 2-mark question; keep it tight.