Abstract
Purpose :
To evaluate the reliability and security between the two mentioned biometers.
Methods :
This is a prospective and observational case-control study. In a single session, optical biometry was performed in 504 eyes of 279 patients diagnosed with cataract. In this study, measurements of axial length (AL), keratometry (K), anterior chamber depth (ACD), white-to-white distance (WTW), and lens thickness (LT) were compared.
Results :
Statistically significant differences were observed, but several were clinically irrelevant. The Revo tended to underestimate AL by -0.06 mm, with a statistically significant overestimation of mean K by 0.73 diopters. In ACD, an insignificant difference of 0.00 mm was noted. WTW measurements showed a statistically significant 0.66 mm overestimation by the Revo, while LT measurements exhibited a 0.7 mm overestimation compared to the IOLMaster 700.
Conclusions :
Positive correlations were found in biometric measurements of AL and ACD between the Revo FC 130 and IOLMaster 700, but not in K. Although there were statistical differences between both biometers, many were not clinically relevant, except in the measurements of km, where a significant variability of up to 0.7 diopters was observed. This variability between LT and WTW could affect the effective position of the lens when applying fourth generation formulas. Overall, the IOLMaster 700 demonstrated good repeatability compared to other biometers.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.