Berntsen D, Cox S, Bickle K et al (2019) A Randomized Trial to Evaluate the Effect of Toric Versus Spherical Contact Lenses on Vision and Eyestrain. Eye and Contact Lens; 45, pp 28 - 33 [Accessed Dec 2021]
Click https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6319569/ link to open resource.