Skip to main content
main-content

12.08.2016 | Original Paper | Ausgabe 3/2017

International Ophthalmology 3/2017

Opaque bubble layer incidence in Femtosecond laser-assisted LASIK: comparison among different flap design parameters

Zeitschrift:
International Ophthalmology > Ausgabe 3/2017
Autoren:
Leonardo Mastropasqua, Roberta Calienno, Manuela Lanzini, Niccolò Salgari, Sergio De Vecchi, Rodolfo Mastropasqua, Mario Nubile

Abstract

The purpose of this study was to evaluate the incidence of opaque bubble layer (OBL) in femtosecond laser-assisted in situ keratomileusis (LASIK) flaps created with the support of Visumax Carl Zeiss femtosecond laser, planned with different flap diameters (7.90, 8.0, and 8.20 mm) and the same laser energy and power settings. Incidence of intraoperative OBL in flaps of consecutive 108 patients (216 eyes) subjected to bilateral femtosecond-assisted LASIK was considered. Flap creation was performed with the same laser design parameters (spot distance and energy offset) and different presetting diameters of 7.90 mm (72 eyes, group 1), 8 mm (72 eyes, group 2), and 8.20 mm (72 eyes, group 3). The incidence of OBL was considered and its extension was reported measuring involvement of different four corneal flap quadrants in which was theoretically divided the entire flap area; based on these data, OBL presence was classified as none (no evidence of OBL), minimal (minimal presence in not more that one quadrants corneal flap), mild (OBL presence in almost two or three quadrants without tendency to invade central cornea), and moderate (OBL presence in almost three quadrants with tendency to invade central cornea). In group 1, the incidence of OBL was of 23.6 % (17 eyes) with a mild/moderate presence; in group 2, incidence was 20.8 % (15 eyes) with mild presence. Group 3 presented a reduced OBL incidence (4.1 %, 3 eye) with a minimal presence. No statistically significant difference was found between group 1 and 2 (p = 0.8414).We found statistically significant differences between group 1 and group 3 (p = 0.0012) and between groups 2 and 3 (p = 0.0044). A significant reduction and extension of OBL incidence were evident when LASIK flap settings diameter was increased, and flap edge was closer to the contact glass border; this is probably consequent to a more effective gas dispersion outside of corneal flap.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 3/2017

International Ophthalmology 3/2017 Zur Ausgabe

Neu im Fachgebiet Augenheilkunde

07.09.2018 | Video plus | Ausgabe 11/2018

Einseitige kombinierte Augenmuskeloperation zur Korrektur der Esotropie

Videobeitrag zur Rücklagerung des M. rectus medialis und Faltung des M. rectus lateralis

24.08.2018 | Leitlinien, Stellungnahmen und Empfehlungen | Ausgabe 10/2018

Stellungnahme von BVA, DOG und RG zur intravitrealen Therapie des visusmindernden Makulaödems bei retinalem Venenverschluss

Therapeutische Strategien, Stand 24.04.2018

20.08.2018 | Rehabilitation | CME | Ausgabe 10/2018 Open Access

Aktuelle Möglichkeiten der visuellen Rehabilitation

17.08.2018 | Das therapeutische und diagnostische Prinzip | Ausgabe 11/2018

Suprachoroidale Hydrogelplombe