Orthokeratology

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Notion

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Science and technology

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What Wikipedia says

Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and astigmatism.

Excerpt from the Wikipedia article “Orthokeratology”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: JubeAO, CC BY-SA 4.0, via Wikimedia Commons.