CONTACT LENS Meaning and
Definition
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A contact lens refers to a thin, medical device typically made of a specialized type of plastic that is placed directly onto the cornea of the eye to correct vision problems or for cosmetic purposes. It is designed to rest on the tear film of the eye and acts as a substitute for traditional eyeglasses. Contact lenses are used to correct various refractive errors such as nearsightedness, farsightedness, astigmatism, and presbyopia.
Contact lenses are available in several types, including soft lenses, rigid gas permeable lenses (RGP), and hybrid lenses that combine the properties of both types. Soft contact lenses are highly flexible and conform easily to the shape of the eye. RGP lenses are more rigid and allow oxygen to pass through to the cornea, resulting in improved visual acuity. Hybrid lenses combine a rigid center and a soft outer ring for enhanced comfort.
Contact lenses can be prescribed by optometrists or ophthalmologists, taking into consideration the specific needs and visual requirements of the wearer. Proper care and maintenance of contact lenses, including regular cleaning and disinfection, are necessary to ensure eye health and to prevent complications such as infections.
Overall, contact lenses provide an alternative method of correcting vision that offers improved comfort, a wider field of view, and better aesthetics compared to traditional eyeglasses.
Common Misspellings for CONTACT LENS
- xontact lens
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Etymology of CONTACT LENS
The word "contact lens" originates from the combination of two distinct components: "contact" and "lens".
1. "Contact" is derived from the Latin word "contactus", which means "touch" or "to touch". The term was later adopted into English in the early 17th century with the same meaning, referring to a state of touching or being in close proximity to something.
2. "Lens", on the other hand, has its origins in the Latin word "lentil" or "lenticula", which refers to a lentil-like shape. It was later applied to optical devices due to their similar shape. The term was adopted into English in the 17th century, referring to a piece of transparent material with a curved surface used to bend or focus light in order to form an image.
Similar spelling words for CONTACT LENS
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