1. Resnikoff S, Pascolini D, Etya’ale D, Kocur I, Pararajasegaram R, Pokharel GP et al (2004) Global data on visual impairment in the year of 2002. Bull World Health Organ 82(11):844–851
2. Jafarinasab MR, Feizi S, Baghi AR, Ziaie H, Yaseri M (2010) Aspheric versus spherical posterior chamber intraocular lenses. J Ophthalmic Vis Res 5(4):217–222
3. Tan QQ, Liao X, Tian J, Jia Lin, Lan CJ (2019) Visual performance and optical quality in eyes implanted with an aspheric or spherical monofocal intraocular lens: a systematic review with meta-analyses. Int J Clin Exp Med 12(3):2486–2494
4. Marcos S, Barbero S, Jimenez-Alfaro I (2005) Optical quality and depth-of-field of eyes implanted with spherical and aspheric intraocular lenses. J Refract Surg 21(3):223–235
5. Kohnen T (2008) Multifocal IOL technology: a successful step on the journey towards presbyopia treatment. J Cataract Refract Surg 34(12):2005