Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction
Objective To evaluate the longitudinal changes in the effective optical zone (EOZ) following hyperopic keratorefractive lenticule extraction (KLEx) and investigate factors influencing the EOZ.Patients and methods This retrospective study included 27 patients who underwent hyperopic KLEx. According t...
Saved in:
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Taylor & Francis Group
2025-12-01
|
Series: | Annals of Medicine |
Subjects: | |
Online Access: | https://www.tandfonline.com/doi/10.1080/07853890.2025.2453628 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
_version_ | 1841525280654491648 |
---|---|
author | Yangyi Huang Dan Fu Yuliang Wang Xiaoliao Peng Tian Han Xingtao Zhou |
author_facet | Yangyi Huang Dan Fu Yuliang Wang Xiaoliao Peng Tian Han Xingtao Zhou |
author_sort | Yangyi Huang |
collection | DOAJ |
description | Objective To evaluate the longitudinal changes in the effective optical zone (EOZ) following hyperopic keratorefractive lenticule extraction (KLEx) and investigate factors influencing the EOZ.Patients and methods This retrospective study included 27 patients who underwent hyperopic KLEx. According to the transition zone (TZ) sizes, they were divided into two groups: group A (21 eyes) with a 2.0-mm TZ and group B (10 eyes) with a 0 or 0.2-mm TZ. The programmed treatment zone (PTZ) was the sum of the programmed optical zone (POZ) and the TZ.. Changes in the EOZ were evaluated at the early (within 1 month postoperatively) and late (over 6 months postoperatively) postoperative stages. The effects of the surgical and corneal topographic parameters on EOZ were explored.Results A significantly higher postoperative spherical equivalent was found in group B than in group A (p = 0.002). The early and late EOZ diameters were 4.27 ± 0.20 mm and 4.04 ± 0.21 mm in group A, and 3.48 ± 0.29 and 3.12 ± 0.49 mm in group B, respectively. ΔEOZ/POZ and ΔEOZ/PTZ were significantly larger at the late than the early postoperative stage in both groups (p < 0.001), with a larger ΔEOZ/POZ value in group B than that in group A at both stages (p < 0.001). EOZ reduction was negatively associated with POZ at the late postoperative stage (ΔEOZ/POZ: p = 0.043; ΔEOZ/PTZ: p = 0.020).Conclusions The EOZ continued decreasing following hyperopic KLEx. A larger TZ and POZ would result in a larger postoperative EOZ. |
format | Article |
id | doaj-art-24bb4197f55d421dadcd897e8a01e166 |
institution | Kabale University |
issn | 0785-3890 1365-2060 |
language | English |
publishDate | 2025-12-01 |
publisher | Taylor & Francis Group |
record_format | Article |
series | Annals of Medicine |
spelling | doaj-art-24bb4197f55d421dadcd897e8a01e1662025-01-17T17:05:50ZengTaylor & Francis GroupAnnals of Medicine0785-38901365-20602025-12-0157110.1080/07853890.2025.2453628Changes in the effective optical zone following hyperopic keratorefractive lenticule extractionYangyi Huang0Dan Fu1Yuliang Wang2Xiaoliao Peng3Tian Han4Xingtao Zhou5Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaObjective To evaluate the longitudinal changes in the effective optical zone (EOZ) following hyperopic keratorefractive lenticule extraction (KLEx) and investigate factors influencing the EOZ.Patients and methods This retrospective study included 27 patients who underwent hyperopic KLEx. According to the transition zone (TZ) sizes, they were divided into two groups: group A (21 eyes) with a 2.0-mm TZ and group B (10 eyes) with a 0 or 0.2-mm TZ. The programmed treatment zone (PTZ) was the sum of the programmed optical zone (POZ) and the TZ.. Changes in the EOZ were evaluated at the early (within 1 month postoperatively) and late (over 6 months postoperatively) postoperative stages. The effects of the surgical and corneal topographic parameters on EOZ were explored.Results A significantly higher postoperative spherical equivalent was found in group B than in group A (p = 0.002). The early and late EOZ diameters were 4.27 ± 0.20 mm and 4.04 ± 0.21 mm in group A, and 3.48 ± 0.29 and 3.12 ± 0.49 mm in group B, respectively. ΔEOZ/POZ and ΔEOZ/PTZ were significantly larger at the late than the early postoperative stage in both groups (p < 0.001), with a larger ΔEOZ/POZ value in group B than that in group A at both stages (p < 0.001). EOZ reduction was negatively associated with POZ at the late postoperative stage (ΔEOZ/POZ: p = 0.043; ΔEOZ/PTZ: p = 0.020).Conclusions The EOZ continued decreasing following hyperopic KLEx. A larger TZ and POZ would result in a larger postoperative EOZ.https://www.tandfonline.com/doi/10.1080/07853890.2025.2453628Keratorefractive lenticule extraction (KLEx)hyperopiaeffective optical zonetransition zone |
spellingShingle | Yangyi Huang Dan Fu Yuliang Wang Xiaoliao Peng Tian Han Xingtao Zhou Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction Annals of Medicine Keratorefractive lenticule extraction (KLEx) hyperopia effective optical zone transition zone |
title | Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
title_full | Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
title_fullStr | Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
title_full_unstemmed | Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
title_short | Changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
title_sort | changes in the effective optical zone following hyperopic keratorefractive lenticule extraction |
topic | Keratorefractive lenticule extraction (KLEx) hyperopia effective optical zone transition zone |
url | https://www.tandfonline.com/doi/10.1080/07853890.2025.2453628 |
work_keys_str_mv | AT yangyihuang changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction AT danfu changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction AT yuliangwang changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction AT xiaoliaopeng changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction AT tianhan changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction AT xingtaozhou changesintheeffectiveopticalzonefollowinghyperopickeratorefractivelenticuleextraction |