First clinical experience with the Argos optical biometer. Comparative evaluation of biometric parameters and intraocular lens calculations using two SS-OCT biometers
Year: 2025
Type: article
Study design: Observational Study
Abstract: Relevance. The increasing life expectancy has led to a rise in age-related vision disorders, such as presbyopia and cataracts, with WHO predicting 2.1 billion presbyopia cases and 35 million annual cataract surgeries globally by 2030. In Russia, ~2 million cataract cases are diagnosed yearly, with 760K – 1 million lens replacements performed, highlighting the demand for precise IOL calculations to achieve optimal refractive outcomes. While the IOLMaster 700 remains the gold standard, the newly introduced Argos SS-OCT biometer (with Enhanced Retina Visualization) shows promise for challenging cases (e.g., dense cataracts, corneal opacities), though clinical data, especially in Russian-language literature, remain scarce. Purpose. Comparative analysis of the accuracy of biometric measurements and intraocular lens calculations using optical biometers (Argos and IOLMaster 700) in patients with cataracts of varying density. Material and methods. This prospective study included 194 eyes with cataracts. A comparative evaluation was performed between two SS-OCT biometers: Argos (featuring Sum-of-segments technology and ERV mode) and IOLMaster 700. Special attention was given to cases of dense cataracts (PNS ≥4). Results. Argos demonstrated significantly higher measurement success rates (97.9% vs 92.2%; p<0.001). In the dense cataract group, Argos achieved 92% effectiveness in ERV mode versus 65% for IOLMaster 700. A clinical case confirmed the accuracy of ERV measurements (error <0.3D). Both devices showed comparable accuracy in transparent media. Conclusion. The Argos biometer with ERV mode is the preferred choice for complex cases, providing high measurement accuracy in dense cataracts. SS-OCT technology combined with the Sum-of-segments method meets modern requirements for refractive cataract surgery. Key words: optical biometry, SS-OCT, cataract, axial length, refractive outcomes.
Authors: S. Fyodorov Eye Microsurgery Federal State Institution, Moscow , Russian Federation, V.V. Teplovodskaya, S.G. Agafonov, S. Fyodorov Eye Microsurgery Federal State Institution, Moscow , Russian Federation, E.A. Kokaeva, S. Fyodorov Eye Microsurgery Federal State Institution, Moscow , Russian Federation, E.P. Sudakova, S. Fyodorov Eye Microsurgery Federal State Institution, Moscow , Russian Federation
Language: English
Subfield: Ophthalmology
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7127370749