Agreement of Corneal Measurements With Swept-Source Optical Coherence Tomography (Anterion) and Scheimpflug (Sirius)...

Introduction This study aimed to evaluate the agreement between two advanced anterior segment imaging devices, Anterion (Heidelberg Engineering GmbH, Heidelberg, Germany) and Sirius (CSO, Florence, Italy), in measuring keratometric and pachymetric parameters in patients with moderate to severe dermatochalasis. Methods Keratometric and pachymetric measurements were obtained using Anterion and Sirius devices in patients with moderate to severe dermatochalasis. The agreement between the two devices was assessed by comparing anterior and posterior corneal keratometry and corneal thickness. Statistical analyses were performed to determine the significance of differences and correlations between the measurements. Results Statistically significant differences were observed between the two devices in anterior and posterior corneal keratometry, except for posterior astigmatism and corneal thickness. However, these differences were clinically insignificant(low refractive differences). The study found excellent agreement between Anterion and Sirius for most parameters, with strong correlations and minimal disparities in measurements. Posterior astigmatism showed moderate agreement but still exhibited a strong correlation between the devices. Conclusion Both Anterion and Sirius provide reliable keratometric and pachymetric measurements in patients with dermatochalasis, allowing for interchangeable use. Accurate preoperative evaluations are essential for cataract or refractive surgery, as dermatochalasis may affect corneal measurements.