Near Point
The near point is the nearest distance at which an object can be seen clearly without strain.
Practice This ConceptMain explanation
Teacher explanation
For a normal adult eye, the near point is about 25 cm. If an object is brought closer than this, the eye cannot focus it sharply on the retina. The near point depends on the eye's power of accommodation and can change with age or vision defects.
Example
A textbook held at 25 cm is usually readable clearly, but if it is brought too close, the letters may blur.
Simple analogy
Near point means nearest clear point.
Common confusion
Students often think the near point is the closest distance for any eye, but it is the closest clear distance for a particular eye, and it can vary.
Exam tip
Remember the standard near point of a normal adult eye as 25 cm unless the question states otherwise.
Answer writing and exam use
1-mark use
Write the exact meaning of near point in one clean line.
2-mark use
Define near point and add one example or condition.
3-mark use
Explain near point, show the method or example, and mention the common mistake.
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