Abstract

Background: Cataract surgery in patients with dry eye disease poses unique challenges due to ocular surface irregularities . Artificial tears, designed to alleviate dry eye symptoms, vary widely in viscosity. Understanding their influence on keratometric measurements is essential for accurate preoperative IOL power calculation.
Methods: fifty cataract patients diagnosed with dry eye disease were enrolled. K1, K2, and axis were taken after 1 minute, and 5 minutes after instillation. Comparative analysis was performed to assess changes in these parameters.
Results: low viscosity artificial tears induced minor changes in both K1 and K2 and axis values. Conversely, high viscosity artificial tears, demonstrated significant alterations in K1 and K2 and axis.
Conclusion: our study demonstrates that the viscosity of these tears significantly influences keratometric measurements. Clinicians should consider these alterations when assessing corneal parameters for IOL power calculation.