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GCSE Biology · key term
A focusing defect in which nearby objects appear blurred because their light would be focused behind the retina.
Used by Edexcel and OCR
Specification 2.16B · Paper 1
Revise: Eye DefectsA person with long-sightedness has difficulty seeing nearby objects clearly. Light from a near object is not refracted enough, so it would come to a focus behind the retina rather than on it.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
An eye defect in which nearby objects appear blurred because light would focus behind the retina.
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A cataract is different from short- or long-sightedness. The eye’s lens becomes cloudy, so light does not pass through it clearly and vision becomes hazy. Changing the focus with glasses does not remove that cloudiness.