Clinical Effect Of Laser Energy And Spot/Track Distance During Klex Surgery With Visumax800
Published 2025 - 43rd Congress of the ESCRS
Reference: PO706 | Type: Free paper | DOI: 10.82333/s0tq-w864
Authors: David Pablo P Pinero* 1 , Elena Martínez-Plaza 2 , Alberto López-de la Rosa 2 , Ainhoa Molina-Martin 1 , Laurent Bataille 3
1Optics, Pharmacology and Anatomy,University of Alicante,Alicante,Spain, 2Department of Theoretical Physics, Atomic and Optics,University of Valladolid,Valladolid,Spain, 3Visitrain SL. Science Park University of Alicante,Alicante,Spain
Purpose
To evaluate clinical outcome according to changing laser energy and spot/track distance with KLEX surgery with Visumax800
Setting
Fatima Eye Clinic, Changwon, Republic of Korea
Fatima Eye Research, Changwon, Republic of Korea
Kyongsang National University, Dep. of Information and Statistics, Republic of Korea
Methods
Total 610 eyes with uncompromised KLEX surgery were enrolled. Laser setting were divided into three groups ( 100, 115, 130nJ ). Spot/Track(S/T) distance were divided into three groups ( 4.2/3.0, 4.0/3.0, 3.7/3.0 um ). Uncorrected distance visual acuity(UDVA), refractive error, Ocula scatter index(OSI, HD analyzer) was measured after surgery at 1day, 1week, 1month, 3month. Corneal high order aberration ( spherical aberration, vertical coma, horizontal coma, total HOA) was measured after surgery at 1, 3month by Itrace.
Results
UDVA at day 1 with spot/track 3.7/3.0 setting with 100nJ was 0.95±0.17, with 115nJ was 1.00±0.16, with 130nJ was 1.04±0.12. S/T 4.0/3.0 setting with 100nJ was 1.00±0.17, with 115nJ was 0.91±0.15, with 139nJ was 0.98±0.18. S/T 4.2/3.0 with 100nJ was 0.94±0.20, with 115nJ was 0.99±0.14, with 130nJ was 1.21±1.35. UDVA day 1 with 100nJ energy setting with 3.7/3.0 setting was 0.95±0.17, 4.0/3.0 setting was 1.00±0.17, 4.2/3.0 setting was 0.94±0.20. Laser energy 115nJ with 3.7/3.0 setting was 1.00±0.16, 4.0/3.0 setting was 0.91±0.15, 4.2/3.0 setting was 0.99/0.14. Laser energy 130nJ with 3.7/3.0 setting was 1.04±0.12, 4.0/3.0 setting was 0.98 ±0.18, 4.2/3.0 setting was 1.21±0.35. There are no statistic differences OSI related to visual acuity.
Conclusions
In this study, visual acuity was influenced by laser energy that lower energy was worse outcome at postoperative day 1. Postoperative 1week, 1month, 3months results had comparable outcome in all laser energy setting. However, spot/track distance didn' influnece postoperative visual acuity. Ocular scatter index ( OSI ) at 1day, 1week, 1month, 3month were no significant differences correlated with visual acuity. It maybe due to OSI also influnced by ocular surface dryness, especially postoperative day 1.