The minimum distance at which objects can be seen most distinctly without strain is called the least distance of distinct vision, also known as the near point of the eye.
What is the minimum distance at which objects can be seen most distinctly without strain, and what is it called?
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The minimum distance at which objects can be seen most distinctly without strain is known as the near point of distinct vision. For a young, healthy adult with normal vision, this distance is typically around 25 centimeters (10 inches). Beyond the near point, the ciliary muscles struggle to accommodate, leading to visual strain and blurriness. This distance tends to increase with age due to changes in the eye’s flexibility, a condition known as presbyopia. Corrective lenses, such as reading glasses, may be required to compensate for presbyopia and maintain clear vision at close distances.