EXTENDEDWEAR LEN Meaning and
Definition
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Extended-wear lenses are a type of contact lens specifically designed to be worn continuously for an extended period, typically for several days or even up to a month without removal. These lenses are made from high oxygen-permeable materials that allow a sufficient amount of oxygen to reach the cornea, ensuring comfort and minimizing the risk of eye irritations or infections.
Commonly referred to as "EW lenses," extended-wear lenses provide convenience to individuals who prefer not to remove and clean their lenses daily. They are ideal for those with an active lifestyle, individuals who travel frequently, or those who have difficulty remembering to remove and insert lenses on a regular basis. This type of lens is also beneficial for individuals with specific eye conditions that require continuous vision correction.
Extended-wear lenses may be prescribed by an eye care professional based on an individual's eye health, tear production, and lens tolerance. They come in various forms, including soft or silicone hydrogel. It is essential to follow the care instructions outlined by the eye care professional to ensure proper lens hygiene and prevent potential complications.
While extended-wear lenses offer the convenience of continuous use, individuals wearing them should be vigilant about monitoring their eye health. Routine eye exams and regular check-ups with an eye care professional are crucial to ensuring the ongoing safety and effectiveness of extended-wear lenses.
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Etymology of EXTENDEDWEAR LEN
The term "extended wear lens" refers to a type of contact lens that is designed to be worn continuously for an extended period of time, typically ranging from seven to thirty days without removal. It is a combination of the words "extended wear" and "lens". The etymology of the individual words is as follows:
1. Extended: The word "extended" comes from the Latin word "extendere", which means "to stretch out". It entered the English language around the 15th century.
2. Wear: The word "wear" has Old English roots and can be traced back to the Old English word "werian", which means "to carry". It has been used in English since the 12th century.
3. Lens: The word "lens" has Latin origins and is derived from the Latin word "lentilium", which refers to a lentil-shaped double convex object.
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