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. 2023 Jan 20;9(2):e12996. doi: 10.1016/j.heliyon.2023.e12996

Table 1.

Additive compounds in contact lens material.

Chemical Name Abbreviation Chemical Structure
Poly (2-hydroxyethyl methacrylate) pHEMA Image 1
Methacrylic acid MA Image 2
Polyvinylpyrrolidone PVP Image 3
N-Vinyl-2-pyrrolidone NVP Image 4