Comparative study on incidence of posterior vitreous detachment (PVD) between conventional and femtosecond laser-assisted laser in situ keratomileusis (LASIK)

To compare incidence of posterior vitreous detachment (PVD) in patients after microkeratome and femtosecond laser-assisted laser in situ keratomileusis (LASIK) using ultrasound B-scan. Prospective, non-randomised, comparative and interventional hospital based study. This study was performed on 138 eyes of 69 patients, 64 eyes in microkeratome group and 74 eyes in femtosecond laser group for a period of 10 months from December 2017 to October 2018. The mean age of patients in microkeratome group was 23.34 years and in femtosecond laser group was 23.19 years. All patients in both the groups underwent one of the two procedure. Patients were assessed for subjective and objective refraction, presence of PVD, subjective complaints of floaters and axial length changes at each visit. At 1 week and 1 month postoperative period there was no PVD in either of the groups and none of the patients complained about disturbing floaters. At one week postoperative period, 17 eyes (26.5%) in microkeratome group and 22 eyes (29.6%) in femtosecond laser group had residual refraction ranging from -0.25D to -0.75D. The changes in axial length following surgery was 0.08 ± 0.08mm in microkeratome group and 0.1 ± 0.07mm in femtosecond laser group at one month. Our study did not demonstrate any difference between both the procedures with respect to posterior segment complications. Patients in our study are relatively younger compared to other studies and hence, age of the patient undergoing LASIK may affect the incidence of PVD.Both microkeratome assisted LASIK and femtosecond assisted LASIK were comparable with respect to posterior segment complications. The mean age of patients in this study is assumed to have an effect on outcome. Whereas axial length, power of the eye, procedure opted did not significantly have any impact on outcome. A larger population with longer follow up is needed in Indian population to conclude our results.

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Occurrence of posterior vitreous detachment after femtosecond laser in situ keratomileusis: Ultrasound evaluation

Journal of Cataract & Refractive Surgery ◽

10.1016/j.jcrs.2011.01.022 ◽

2011 ◽

Vol 37 (7) ◽

pp. 1300-1304 ◽

Cited By ~ 5

Author(s):

Jean-Christophe Gavrilov ◽

Thomas Gaujoux ◽

Mickael Sellam ◽

Laurent Laroche ◽

Vincent Borderie

Keyword(s):

Femtosecond Laser ◽

Posterior Vitreous Detachment ◽

Laser In Situ Keratomileusis ◽

Vitreous Detachment ◽

Ultrasound Evaluation

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Epiretinal Membrane after Laser In Situ Keratomileusis

Case Reports in Ophthalmological Medicine ◽

10.1155/2013/610302 ◽

2013 ◽

Vol 2013 ◽

pp. 1-3

Author(s):

Miguel Paciuc-Beja ◽

Gerardo Garcia ◽

Jose Dalma ◽

Hugo Quiroz-Mercado

Keyword(s):

Young Adult ◽

Retinal Detachment ◽

Epiretinal Membrane ◽

Posterior Vitreous Detachment ◽

Posterior Segment ◽

Laser In Situ Keratomileusis ◽

Retinal Hemorrhages ◽

Vitreous Detachment ◽

Macular Holes

Multiple posterior segment complications can occur after LASIK. Posterior vitreous detachment, macular holes, retinal hemorrhages, retinal detachment, and several other complications have been described. A case of posterior vitreous detachment with epiretinal membrane in a young adult after LASIK is reported. LASIK surgeons must be aware of the possibility of posterior segment complications after surgery.

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Incidence of posterior vitreous detachment after laser in situ keratomileusis

Graefe s Archive for Clinical and Experimental Ophthalmology ◽

10.1007/s00417-005-0002-y ◽

2005 ◽

Vol 244 (2) ◽

pp. 149-153 ◽

Cited By ~ 15

Author(s):

Alireza Mirshahi ◽

Dörte Schöpfer ◽

Daniel Gerhardt ◽

Evdoxia Terzi ◽

Thomas Kasper ◽

...

Keyword(s):

Posterior Vitreous Detachment ◽

Laser In Situ Keratomileusis ◽

Vitreous Detachment

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Correction of Myopia and Myopic Astigmatism by Femtosecond Laser in Situ Keratomileusis

Czech and Slovak Ophthalmology ◽

10.31348/2019/2/2 ◽

2019 ◽

Vol 75 (2) ◽

pp. 65-71

Author(s):

Tereza Řeháková ◽

Věra Veliká ◽

Naďa Jirásková

Keyword(s):

Visual Acuity ◽

Femtosecond Laser ◽

High Myopia ◽

Laser In Situ Keratomileusis ◽

Patient’S Satisfaction ◽

The Mean ◽

One Year ◽

Myopic Astigmatism

Aim: We analysed one-year refractive results and the incidence of complications in patients with correction of low-to-high myopia or myopic astigmatism by femtosecond laser in situ keratomileusis (FS-LASIK) using femtosecond laser LenSx® (Alcon, Fort Worth, Texas, USA) a excimer laser Excimer Amaris 500 (Schwind eye-tech-solutions GmbH and Co KG, Kleinostheim, Germany). Methods: To the retrospective study were included 171 eyes of 87 patients (38 men, 49 women) who underwent correction of myopia and myopic astigmatism by FS-LASIK in the outpatient Department of Ophthalmology, University Hospital in Hradec Králové between 2013-2017. We assessed uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA), subjective refraction, central corneal thickness (CCT) in the thinnest point, patient’s satisfaction and the incidence of complications in the one-year follow-up period. Results: At the time of laser procedure the mean patient‘s age was 29,26 ± 6,47 years (range 18 to 46 years). In 21 eyes was corrected myopia (range -6,5 to -2,5 D sph) and in 150 eyes myopic astigmatism (range -8,75 to -0,25 D sph and -3,0 to -0,25 D cyl). The mean preoperative UCVA 0,06 ± 0,08 (range 0,02 to 0,8) got better to 1,12 ± 0,17 (range 0,8 to 1,5) at the end of follow-up period. There wasn’t statistically significant change in BCVA between preoperative and postoperative values. Preoperative mean value of subjective refraction was -4,14 ± 1,43 D sph (range -8,5 to -1 D sph) and -0,57 ± 0,58 D cyl (range -3 to 0 D cyl) and after 12 months -0,02 ± 0,16 D sph (range -0,1 to 0,75 D sph) and -0,01 ± 0,1 D cyl (range -0,5 to 0,5 D cyl). The initial mean CCT was 554,76 ± 30,07 μm (range 485 to 660 μm), after 6 months 494,06 ± 34,99 μm (range 421 to 594 μm) and after 12 months 492,92 ± 34,55 μm (range 411 to 592 μm). We observed peroperative complications in 3 eyes. The suction loss of femtosecond laser occurred during flap creation due to sudden eye movement. Postoperatively in one case we enrolled flap pucker first postoperative day. In other case flap dislocation occurred after abdonimal surgery under general anesthesia which was performed 3 months after refractive procedure and we had to indicate flap reposition. The mean grade of patient’s satisfaction was at the end of follow-up period 1,04. The most often complaints were the sensation of dry eye (10 patients) and blurry vision during computer working, inadequate lighting and fatique (6 pacients). Conclusions: According to our experience correction of low-to-high myopia or myopic astigmatism by using FS-LASIK is an effective, relatively safe and predictable method. The basic assumption of good postoperative results and patient’s satisfaction is thorough and comprehensive preoperative examination with respect to indication criteria.

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