Gab-Alla AA, et al. - Researchers conducted this retrospective study to assess the contributions of anterior corneal and ocular residual astigmatism to autorefraction astigmatism in adult myopic and myopic astigmatic individuals and how these compensate each other. This investigation was completed in private eye centre, Ismailia, Egypt, between September 2017 and November 2019. They involved 1,158 eyes (right 582 and left 576) with myopia or myopic astigmatism of 582 candidates (206 males with 406 eyes and 376 females with 752 eyes). Data reported that the percentage of the significant autorefraction astigmatism (> 0.5D) was 75.4% which is primarily anterior corneal. Anterior corneal astigmatism is compensated by ocular residual astigmatism in 26.8% of candidates.