Corneal Toricity and Predicted Residual Astigmatism

Key Points

• The study aims to evaluate the differences between predicted and measured residual astigmatism in eyes fitted with corneal contact lenses.
• Analyzed 113 eyes adapted to corneal contact lenses.
• Compared predicted vs. measured residual astigmatism based on corneal toricity.
• Examined data across different types of corneal toricity.
• Measured residual astigmatism was consistently less than predicted.
• For with-the-rule corneas with 0.75 D or more toricity, the difference reached up to 0.25 D.