ESCRS - PP01.16 - Comparison Of Argos Biometer With Verion Digital Marking And Manual Marking For Toric Intraocular Lens

Comparison Of Argos Biometer With Verion Digital Marking And Manual Marking For Toric Intraocular Lens

Published 2025 - 43rd Congress of the ESCRS

Reference: PP01.16 | Type: Poster | DOI: 10.82333/h7k2-m408

Authors: Yi-Hsuan Li 1 , Yuan-Sheng WANG 2 , Yu-Lun LO* 3 , Jiun Yo LIN 4 , Chao-Kai CHANG 5

1Ophthalmology,Nobel Eye Clinics,New Taipei city,Taiwan, Province of China, 2ophthalmology,Shin Kong Wu Ho Su Memorial Hospital,Taipei city,Taiwan, Province of China, 3Ophthalmology,Nobel Eye Clinics,Taichung,Taiwan, Province of China, 4Ophthalmology,Nobel Eye Clinics,Kaohsiung,Taiwan, Province of China, 5Ophthalmology,Nobel Eye Clinics,Taipei city,Taiwan, Province of China

Purpose

To compare the precision of axis alignment between digital marking with an ARGOS biometer and manual marking in patients undergoing cataract surgery with Toric intraocular lens (IOL) implantation.

Setting

Precise alignment of Toric IOL is crucial to achieving satisfactory astigmatism correction, and according to the previous study, digital marking (ex: Callisto eye image-guided system, VERION digital marker) is superior to manual marker with less Toric IOL axis misalignment. This study will explore the axial misalignment between the Argos Biometer integrated with the digital marker and the manual marking.

Methods

This is a randomized prospective study that involves two groups of patients. The study includes patients who are undergoing cataract surgery and have corneal astigmatism between 0.75 and 4.0 diopter. The patients were randomly allocated to either a manual or digital marking group. The digital marking group utilized the Argos biometer system with DMM (digital marker microscope) to guide Toric IOL alignment. In contrast, the manual marking group aligned the Toric IOL axis with the corneal marking labelled under the slit lamp before surgery. The study assessed the axis misalignment for both the digital and manual marking groups, uncorrected distance visual acuity (UCDVA), residual astigmatism, and spherical equivalent at post-op one month.

Results

20 eyes were included in the preliminary result with 10 eyes in the digital group and 10 eyes in the manual group. The preoperative values of both groups were statistically similar in terms of the age, axial length and corneal cylinder. For post-op day 1, misalignment of toric IOL is 2.0±2.27 degree in digital group, 3.9±1.91 degree in manual group, p=0.07. There were no significant differences between groups in residual refractive cylinder (0.33±0.12D in digital group, 0.5±-0.23D in manual group, p=0.06), misalignment of toric IOL (3.3±2.00 degree in digital group, 3.13±1.55 degree in manual group, p=0.84) and uncorrected visual acuity (0.14±0.13 logMAR in digital group, 0.12±0.13 logMAR in manual group, p=0.81) at post-op one month.

Conclusions

According to our preliminary result, ARGOS biometer with VERION DMM is at least not inferior to traditional manual marking and could shortening the preoperative examination time. A larger sample size for further data analysis is ongoing.