Early Clinical Outcomes Of Using Controlled Positive Spherical Aberration To Treat Myopic Presbyopes With Schwind Technology
Published 2025 - 43rd Congress of the ESCRS
Reference: FP06.03 | Type: Free paper | DOI: 10.82333/bwt9-2a63
Authors: khosrow jadidi 1 , farhad nejat 1 , hosein aghamollaei 1 , shiva pirhadi 2 , Shiva Bagheri* 3
1vision health research center, semnan university of medical sciences,semnan,Iran, Islamic Republic Of, 2department of biomedical engineering, science and research branch,islamic azad university.,Tehran,Iran, Islamic Republic Of, 3Rehabilitation Research Center, Department Of Optometry, School Of Rehabilitation Sciences, Iran University Of Medical Sciences,Tehran,Iran, Islamic Republic Of
Purpose
To outline the 3-month postoperative visual outcomes utilizing positive spherical aberration to create centre distance, peripheral near PresbyMAX profiles (SCHWIND eye‑tech‑solutions GmbH, Kleinostheim, Germany) in myopic presbyopes.
Setting
Cathedral Eye Clinic, Belfast, Northern Ireland, UK.
Methods
This study included 10 patients who received bilateral PresbyMAX reversal. The dominant eye was targeted for emmetropia, and the non-dominant eye was targeted between -0.89 and -1.25 D. An addition of 1.25D to 1.50D was utilized. The uncorrected distance (UDVA), intermediate (UIVA), and near (UNVA) visual acuity and refractive error were assessed 3 months postoperatively.
Results
Ten patients completed the follow-up schedule. The UDVA in the dominant eye was -0.02 ± 0.06 logMAR, and 0.42 ± 0.18 logMAR in the nondominant eye. The UNVA was 0.51 ± 0.11 logMAR in the dominant and 0.11 ± 0.16 logMAR in the nondominant eye. The binocular UDVA and UNVA was -0.02 ± 0.05 logMAR and 0.11 ± 0.16 logMAR respectively. Sixty-five percent of eyes were within ±0.50 D of the refractive target, 80% within ±0.75 D and 90% within ±1.00 D. Two eyes had refractive spherical equivalent > 1.00 D. Hazy vision and cross blur are common symptoms at this early assessment.
Conclusions
The PresbyMAX reversal positive spherical approach for myopes provided a range of clear vision from distance to near. Some patients experienced cross-blur in the early postoperative stage, and patients may need counselled accordingly. These are promising early outcomes, and refractive accuracy will improve further with more cases and optimization. More cases will be presented at the ESCRS conference, and with a longer-term follow-up.