Modulation of Total Corneal Astigmatism, Corneal Thickness, and Corneal Higher-Order Aberrations Following Tear-Enhancing Drop Instillation: A Retrospective Comparative Study
This study aimed to quantify changes in corneal astigmatism, thickness, and corneal higher-order aberrations after instilling a tear-enhancing drop (Systane Hydration Ultra, SHU) or 0.9% saline. This retrospective comparative study included 56 eyes (SHU, n = 38; 0.9% saline, n = 18). Corneal pachymetry and optical para...