1. WHO, World report on vision. World health Organization. https://apps.who.int/iris/handle/10665/328717. Accessed 12 Jan 2021 (2019)
2. J. Alonso, J.A. Gómez-Pedrero, J.A. Quiroga, Modern Ophthalmic Optics (Cambridge University Press, 2019)
3. S. Musikant, Optical Materials: An Introduction to Selection and Application (CRC Press, 1985)
4. F. Şen, B.G. Durdu, M. Oduncuoğlu et al., A theoretical investigation by DFT method on CR-39 monomer that is a plastic polymer commonly used in the manufacture of eyeglass lenses. Am. J. Opt. Photonics 2, 7–11 (2014)
5. J. Miller, B. Kislin, Colonel, et al., Policarbonate Versus CR-39 Lenses: A Field Study, SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX. (1979)