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2022
DOI: 10.14434/hindsight.v52i3.33501
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Early Pioneers of Global Soft Contact Lens Development

Abstract: This article outlines the history and development of the first hydrophilic biocompatible plastic, called PHEMA. The story traces the notable leaders in its development and provides a timeline from the initial discovery of the hydrogel material to its evolution into the modern soft contact lens.

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“…As for hydrogel materials poly (hydroxyethyl methacrylate) or pHEMA was invented in 1952 by Drahoslav Lim and Otto Wichterle for biological use (Grant et al, 2022). It was synthesized by polymerization using 2-hydroxyethyl methacrylate as raw material and triethylene glycol dimethacrylate as a cross-linking additive, and the hydrophilic behavior of HEMA is due to the presence of the hydroxyl group at the end of the monomer (Wichterle & Lim, 1960).…”
Section: • Silicone Hydrogel Materialsmentioning
confidence: 99%
“…As for hydrogel materials poly (hydroxyethyl methacrylate) or pHEMA was invented in 1952 by Drahoslav Lim and Otto Wichterle for biological use (Grant et al, 2022). It was synthesized by polymerization using 2-hydroxyethyl methacrylate as raw material and triethylene glycol dimethacrylate as a cross-linking additive, and the hydrophilic behavior of HEMA is due to the presence of the hydroxyl group at the end of the monomer (Wichterle & Lim, 1960).…”
Section: • Silicone Hydrogel Materialsmentioning
confidence: 99%