Effect of suction on macular and retinal nerve fiber layer thickness during femtosecond lenticule extraction and femtosecond laser–assisted laser in situ keratomileusis

Zhang, Jing; Zhou, Yuehua; Zheng, Yang; Liu, Qian; Zhai, Changbin; Wang, Yue

doi:10.1016/j.jcrs.2014.03.027

Cited by 25 publications

(33 citation statements)

References 19 publications

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“…In previous LASIK studies, MT was observed thickened [9], or total macular volume increased [17]. 1 day after surgery, all parameters returned to the baseline [18], and more extended observation did not see any signi cant changes [19]. While in our research, MT decreased after surgery, but GCL was unchanged.…”

Section: Discussionsupporting

confidence: 44%

Short Term Changes in Anterior Segment and Retina After Small Incision Lenticule Extraction

Chen

Liao

Ying

et al. 2020

Preprint

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Purpose: To analyze changes of the anterior segment and retina after small incision lenticule extraction (SMILE) in the short term.Methods: Myopia patients scheduled for SMILE were recruited in Ruijin Hospital, Shanghai, China. Basic information of patients such as age, gender, and refractive errors was recorded. Ocular measurements were taken before surgery, 1 day and 1 week after surgery, including axial length (AL), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), white to white (WTW), pupil diameter (PD), macular thickness (MT), ganglion cell layer thickness (GCL), retinal nerve fiber layer thickness (RNFL), choroidal thickness (CT), macular vessel density, optic disc vessel density. Results of postoperative were compared to baseline, respectively, with paired student t test, and the results were considered statistically significant when p<0.05. Correlations between sphere and changes of ACD (𝜟ACD) and LT (𝜟LT) were analyzed with the Pearson correlation coefficient.Results: 61 eyes of 31 patients were selected for this study. AL, CCT, ACD, and PD postoperative were significantly reduced (p<0.05), while LT was thickened after surgery (p<0.05). MT at the fovea decreased on 1 day and 1 week after surgery (p<0.05). GCL was no statistical changes after surgery. RNFL was unchanged 1 day after surgery, but the inferior sector was thickened 1 week after surgery. CT was observed thicker at fovea 1 day after surgery and 1.0mm from the fovea in nasal 1 week after surgery. Macular vessel density was significantly decreased on 1 day after surgery and most recovered in 1 week. Optic disc vessel density decreased at the peripapillary part on 1 day after surgery and recovered in 1 week. 𝜟ACD and 𝜟LT were found no significant correlation on 1 day after surgery. 𝜟ACD was negatively correlated with 𝜟LT and sphere on 1 week after surgery (r=-0.847, p<0.000; r=-0.398, p=0.002). 𝜟LT was positively correlated with the sphere on 1 week after surgery (r=0.256, p=0.048).Conclusion: Anterior segment was the most influenced while the retina was also impacted in MT, RNFL, CT, macular vessel density, and peripapillary vessel density.

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Section: Discussionsupporting

confidence: 44%

Short Term Changes in Anterior Segment and Retina After Small Incision Lenticule Extraction

Chen

Liao

Ying

et al. 2020

Preprint

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“…13,14 Zivkovic et al 15 reported no significant changes in the thickness of the ganglion cell--inner plexiform layer after microkeratome assisted LASIK surgery. Zhang et al 7 reported no significant change in the thickness of the nerve fiber layer and ganglion cell complex after femtosecond laser-assisted LASIK surgery. As a result of this study, which evaluated the GCT with SD-OCT in the early period after femtosecond laser-assisted LASIK surgery, it was observed that there was no significant change in GCT and NFT values similar to the literature, and results correlated with CMT.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Retinal Ganglion Cell Layer Thickness in the Early Period After Femtosecond LASIK Surgery

Özülken

İlhan²

2020

tjo

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Objectives: To evaluate the early effects of femtosecond laser-assisted in situ keratomileusis (LASIK) surgery in a healthy population on the retinal ganglion cell thickness (GCT), peripapillary retinal nerve fiber thickness (NFT), and central macular thickness (CMT) obtained by spectral domain optical coherence tomography (SD-OCT). Materials and Methods: This case-control study included data from the right eye of 40 subjects without any disease other than refractive error and who had undergone femtosecond laser-assisted LASIK surgery. The preoperative, postoperative first hour, and postoperative third week GCT, NFT, and CMT values obtained by SD-OCT were compared.

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“…Данный метод обладает большей точностью, высокой повторяемостью и малой вариабельностью получаемых результатов [25][26][27]. При его использовании в работах, посвященных сравнению способов формирования роговичного клапана (микрокератомом или фемтолазером) при проведении операции ЛАЗИК, стойких изменений ПСНВС выявлено не было [7,10]. Лишь непосредственно после вмешательства (через 30 мин) обнаруживались истончение ПСНВС и утолщение фовеа, которые носили кратковременный характер и уже на следующий день после операции не определялись [10].…”

Section: Discussionunclassified

“…Другой вопрос о возможном влиянии изменений рефракции роговицы на параметры ПСНВС не был решен в достаточной степени, так как в большинстве рассмотренных выше исследований близорукость в среднем была от (-)3 до (-)5 дптр, достигая (-)5,46 -(-)6,43 только в двух работах [10,13]. По-видимому, при относительно небольшом рефракционном эффекте сложно ожидать существенных изменений параметров ОКТ.…”

Section: Discussionunclassified

“…Хорошо известно, что характеристики оптической системы глаза, в первую очередь его длина, могут весьма существенно изменять количественные показатели ОКТ, особенно у лиц с аномалиями рефракции высокой степени [1][2][3][4][5][6]; роль других характеристик менее исследована. В ряде работ изучалось влияние кераторефракционных вмешательств на параметры ОКТ -толщину перипапиллярного слоя нервных волокон сетчатки (ПСНВС) [7][8][9][10], режедругих структур глазного дна [10]. Однако целью большинства этих работ была оценка возможного повреждающего действия кратковременного повышения уровня внутриглазного давления (ВГД) во время операции ЛАЗИК, в том числе в зависимости от способа формирования роговичного клапана (микрокератомом или фемтолазером).…”

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Effect of corneal refractive surgery on optical coherence tomography measurements

Shpak¹,

Костенев²,

Mushkova³

et al. 2018

Vestn. oftal'mol.

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В настоящее время кераторефракционные операции широко распространены в офтальмологической практике. Наиболее часто их выполняют у пациентов с миопией, в том числе высокой степени. У таких больных нередко имеет место сопутствующая патология глазного дна, требующая проведения высокотехнологичных диагностических исследований, в частности оптической когерентной томографии (ОКТ). Возникает вопрос, могут ли существенные изменения рефракции роговицы в результате ке

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Effect of suction on macular and retinal nerve fiber layer thickness during femtosecond lenticule extraction and femtosecond laser–assisted laser in situ keratomileusis

Abstract: Suction had no significant clinical effects on the macular thickness and retinal nerve fiber layer during femtosecond lenticule extraction or femtosecond laser-assisted LASIK.

Cited by 25 publications

References 19 publications

Short Term Changes in Anterior Segment and Retina After Small Incision Lenticule Extraction

Short Term Changes in Anterior Segment and Retina After Small Incision Lenticule Extraction

Evaluation of Retinal Ganglion Cell Layer Thickness in the Early Period After Femtosecond LASIK Surgery

Effect of corneal refractive surgery on optical coherence tomography measurements

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