Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies

Background: The presence of vitreoretinal changes following laser in situ keratomileusis in myopia is evaluated. Methods: Clinically, 50 patients (100 eyes) with marked anisometropic myopia, 50 low-myopic eyes ([removed]7.00 D) were prospectively evaluated pre-and postoperatively for the presence of...

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Autores principales: Luna, José D., Artal, María N., Reviglio, Victor Eduardo, Pelizzari, Mario, Diaz, Hugo, Juárez Beltrán, Claudio Patricio
Formato: Artículo
Lenguaje:Español
Publicado: 2001
Materias:
RE Oftalmología
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3933/1/A_Luna_Artal_Reviglio_Pelizzari_Diaz_Ju%C3%A1rezBeltr%C3%A1n.pdf
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Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3933
record_format dspace
spelling I38-R144-39332025-04-10T22:33:00Z http://pa.bibdigital.ucc.edu.ar/3933/ Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies Luna, José D. Artal, María N. Reviglio, Victor Eduardo Pelizzari, Mario Diaz, Hugo Juárez Beltrán, Claudio Patricio RE Oftalmología Background: The presence of vitreoretinal changes following laser in situ keratomileusis in myopia is evaluated. Methods: Clinically, 50 patients (100 eyes) with marked anisometropic myopia, 50 low-myopic eyes ([removed]7.00 D) were prospectively evaluated pre-and postoperatively for the presence of newly recognized entoptic phenomena (vitreous floaters, light flashes, or both), and for vitreoretinal changes using indirect depressed fundus examination, a +90 D preset lens, Goldman three-mirror contact lens, and kinetic ultrasound (KU) before and after bilateral LASIK. Patients with previous partial or total posterior vitreous cortex detachment (PVD) were excluded. Experimentally, groups of adult pigs underwent KU, retinal fluorescein angiography (FA), and electroretinography (ERG) before and after applying the microkeratome suction ring for 30 s. Results: Clinically, 8% (4 eyes) had positive perception of postoperative vitreous floaters in the low myopia group, and 32% (16 eyes) in the high myopia group. Postoperative light flashes were noted only in the high myopia group, in 12% of cases. Partial or total posterior or vitreous cortex detachment was detected by biomicroscopy in 2% (1 eye) of the low and in 10% (5 eyes) of the high myopia group and by KU in 4% (2 eyes) of the low and in 24% (12 eyes) of the high myopia group. Experimentally, 2 pig eyes out of 12 developed partial PVD by KU, immediately after microkeratome suction ring application. All pig eyes showed significantly diminished ERG amplitudes during and immediately after suction ring application. No FA changes or delays in retinal circulation time were noted during or immediately after removal of the suction ring. Conclusions: Vitreoretinal alterations after LASIK were demonstrated clinically mainly by KU in high myopes. Experimentally, PVD were also demonstrated. Diminished ERG recordings with normal retinal circulation following suction ring application may suggest some transient choroidal circulation abnormalities. 2001-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3933/1/A_Luna_Artal_Reviglio_Pelizzari_Diaz_Ju%C3%A1rezBeltr%C3%A1n.pdf Luna, José D., Artal, María N., Reviglio, Victor Eduardo ORCID: https://orcid.org/0000-0002-4368-5033 <https://orcid.org/0000-0002-4368-5033>, Pelizzari, Mario, Diaz, Hugo and Juárez Beltrán, Claudio Patricio (2001) Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies. Graefe's Archive for Clinical and Experimental Ophthalmology, 239 (6). pp. 416-423. ISSN 0721-832X info:eu-repo/semantics/altIdentifier/doi/10.1007/s004170100295
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic RE Oftalmología
spellingShingle RE Oftalmología
Luna, José D.
Artal, María N.
Reviglio, Victor Eduardo
Pelizzari, Mario
Diaz, Hugo
Juárez Beltrán, Claudio Patricio
Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
topic_facet RE Oftalmología
description Background: The presence of vitreoretinal changes following laser in situ keratomileusis in myopia is evaluated. Methods: Clinically, 50 patients (100 eyes) with marked anisometropic myopia, 50 low-myopic eyes ([removed]7.00 D) were prospectively evaluated pre-and postoperatively for the presence of newly recognized entoptic phenomena (vitreous floaters, light flashes, or both), and for vitreoretinal changes using indirect depressed fundus examination, a +90 D preset lens, Goldman three-mirror contact lens, and kinetic ultrasound (KU) before and after bilateral LASIK. Patients with previous partial or total posterior vitreous cortex detachment (PVD) were excluded. Experimentally, groups of adult pigs underwent KU, retinal fluorescein angiography (FA), and electroretinography (ERG) before and after applying the microkeratome suction ring for 30 s. Results: Clinically, 8% (4 eyes) had positive perception of postoperative vitreous floaters in the low myopia group, and 32% (16 eyes) in the high myopia group. Postoperative light flashes were noted only in the high myopia group, in 12% of cases. Partial or total posterior or vitreous cortex detachment was detected by biomicroscopy in 2% (1 eye) of the low and in 10% (5 eyes) of the high myopia group and by KU in 4% (2 eyes) of the low and in 24% (12 eyes) of the high myopia group. Experimentally, 2 pig eyes out of 12 developed partial PVD by KU, immediately after microkeratome suction ring application. All pig eyes showed significantly diminished ERG amplitudes during and immediately after suction ring application. No FA changes or delays in retinal circulation time were noted during or immediately after removal of the suction ring. Conclusions: Vitreoretinal alterations after LASIK were demonstrated clinically mainly by KU in high myopes. Experimentally, PVD were also demonstrated. Diminished ERG recordings with normal retinal circulation following suction ring application may suggest some transient choroidal circulation abnormalities.
format Artículo
author Luna, José D.
Artal, María N.
Reviglio, Victor Eduardo
Pelizzari, Mario
Diaz, Hugo
Juárez Beltrán, Claudio Patricio
author_facet Luna, José D.
Artal, María N.
Reviglio, Victor Eduardo
Pelizzari, Mario
Diaz, Hugo
Juárez Beltrán, Claudio Patricio
author_sort Luna, José D.
title Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
title_short Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
title_full Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
title_fullStr Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
title_full_unstemmed Vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
title_sort vitreoretinal alterations following laser in situ keratomileusis: clinical and experimental studies
publishDate 2001
url http://pa.bibdigital.ucc.edu.ar/3933/1/A_Luna_Artal_Reviglio_Pelizzari_Diaz_Ju%C3%A1rezBeltr%C3%A1n.pdf
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AT pelizzarimario vitreoretinalalterationsfollowinglaserinsitukeratomileusisclinicalandexperimentalstudies
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