NEAR VISION Meaning and
Definition
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Near vision refers to the ability of an individual to see objects or text clearly when they are positioned in close proximity to their eyes. It involves the eyes' capacity to focus on objects that are within a short distance, typically between 30 to 40 centimeters. Also known as reading vision or short-range vision, near vision is essential for various activities such as reading, writing, using digital devices, sewing, or any task that requires detailed close-up work.
The process of near vision relies on the eye's ability to bend light rays entering the eye to focus directly on the retina, located at the back of the eye. To achieve clear near vision, the lens within the eye changes its shape, a process called accommodation. This adjustment allows the eye to focus on objects held close to it. The degree of accommodation required depends on the distance between the eye and the object being viewed. As one ages, the lens becomes less flexible, resulting in a condition called presbyopia, which affects near vision clarity.
Corrective measures such as reading glasses, contact lenses, or refractive surgeries like LASIK can help individuals with impaired near vision to compensate for presbyopia or other refractive errors that hinder their ability to see objects up close. It is essential to have regular eye examinations to monitor changes in near vision and address any vision concerns promptly to maintain good visual acuity for near tasks.
Common Misspellings for NEAR VISION
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Etymology of NEAR VISION
The word "near" comes from the Old English word "neah", which means "close or nearby". The word "vision" stems from the Latin word "visio", meaning "sight or the act of seeing". Therefore, the etymology of the term "near vision" combines the idea of seeing with something that is close or nearby.
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