Opaque bubble layer: Incidence, risk factors, and clinical relevance

Liu, Chun-Hsiu; Sun, Chi-Chin; Hui‐Kang, David; Huang, Jerry Chien-Chieh; Liu, Chunfu; Chen, Hsi-Fu; Hsiao, Ching-Hsi

doi:10.1016/j.jcrs.2013.08.055

Cited by 40 publications

(26 citation statements)

References 12 publications

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“…Our results confirm the correlations between CCT and OBL shown in previous studies 12,14 with a larger population of 198 eyes: thicker corneas were associated with more frequent and larger OBL.…”

Section: Discussionsupporting

confidence: 92%

Opaque Bubble Layer Risk Factors in Femtosecond Laser-assisted LASIK

Courtin¹,

Saad²,

Guilbert³

et al. 2015

J Refract Surg

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Section: Discussionsupporting

confidence: 92%

Opaque Bubble Layer Risk Factors in Femtosecond Laser-assisted LASIK

Courtin¹,

Saad²,

Guilbert³

et al. 2015

J Refract Surg

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“…[ 7 20 ] In addition, although generally safe, several complications may still occur during or after LASIK, including flap-related complications such as opaque bubble layer, flap buttonholes, free flaps or incomplete flaps, as well as diffuse lamellar keratitis, flap striae, flap displacement, epithelial ingrowth, and stromal wrinkles. [ 34 35 36 ] Once happened, the visual prognosis may possibly be affected. Therefore, regarding safety issue, PRK represents a more reasonable choice relative to LASIK for correcting the residual refractive error, for avoiding the aforementioned complications,[ 7 15 ] especially in this patient population with higher demand on vision and lower tolerance to risks.…”

Section: Discussionmentioning

confidence: 99%

Photorefractive keratectomy for correcting residual refractive error following cataract surgery with premium intraocular lens implantation

Fan

Sun

Chen

et al. 2018

Taiwan J Ophthalmol

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PURPOSE:The aim of this study is to evaluate the effectiveness and predictability of photorefractive keratectomy (PRK) for correcting residual refractive error following cataract surgery with premium intraocular lens (IOL) implantation.METHODS:We conducted a retrospective review of the medical records of patients who received PRK for correcting residual hyperopia, myopia, and/or astigmatism due to unsatisfied uncorrected distance visual acuity (UDVA) after cataract extraction with implantation of aspheric, diffractive multifocal, or toric IOL from September 2011 to December 2017. Pre-cataract surgery, pre- and post-PRK data including UDVA, best-corrected distance visual acuity, and refractive status were analyzed.RESULTS:A total of 18 consecutive eyes in 17 patients were included in this study. The UDVA after PRK improved 1 line or more in 10 eyes, remained unchanged in five eyes, and decreased in three eyes. The overall improvement in the logarithm of minimal angle of resolution (logMAR) UDVA after PRK was significant (P < 0.05). While dividing patients into subgroups based on IOL type, significant improvement in logMAR UDVA was found in patients with aspheric IOL or diffractive multifocal IOL implantation (P < 0.05). No significant improvement of UDVA was found in patients with toric IOL implantation. All eyes achieved ± 1.00 D of the attempted spherical correction, demonstrating good predictability of PRK.CONCLUSIONS:PRK was a safe and effective procedure to correct residual refractive error following cataract extraction with premium IOL implantation. Although satisfactory for all patients, the outcome is better and more predictable in patients with aspheric and diffractive multifocal IOL implantation and is less satisfactory and unpredictable in patients with toric IOL implantation.

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“…Furthermore, Zhao et al [5] recommended to not use the CCL technique in the presence of an opaque bubble layer (OBL), uneven laser scanning, or in any other situation that may increase the difficulty of lenticule extraction. Although there have been no studies on the incidence of OBL formation during SMILE surgeries, Liu et al [10] reported an OBL rate of 52.5 % during femtosecond laser-assisted in situ keratomileusis (LASIK) procedures, which represents a considerable effect.…”

Section: Discussionmentioning

confidence: 99%

Chung’s swing technique: a new technique for small-incision lenticule extraction

et al. 2016

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BackgroundTo introduce the Chung’s swing technique for small-incision lenticule extraction (SMILE).MethodsA total of 112 eyes of 56 patients were included in this study. Patients were divided into two groups: 52 eyes of 26 patients were treated with SMILE using a traditional method (traditional group) and 60 eyes of 30 patients were treated with SMILE using the Chung’s swing technique (swing group).ResultsAt 1 month postoperatively, all eyes in both groups had an uncorrected distance visual acuity of 20/20 or better. The efficacy indices were 1.09 ± 0.17 and 1.02 ± 0.11 (p = 0.492), and the safety indices were 1.12 ± 0.14 and 1.09 ± 0.15 (p = 0.537), for the traditional and swing group, respectively. All eyes in both groups underwent successful lenticule extraction; all lenticules were intact and complete. The mean lenticule extraction times were 48.67 ± 4.9 and 39.8 ± 5.53 s, for the traditional and swing group, respectively (p < 0.001).ConclusionsThe Chung’s swing technique is efficient for lenticule separation and extraction. Our study results showed good clinical outcomes.Trial registrationTrial registration number: KCT0001978. Registered 22 July 2016. Retrospectively registered.Electronic supplementary materialThe online version of this article (doi:10.1186/s12886-016-0321-2) contains supplementary material, which is available to authorized users.

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Opaque bubble layer: Incidence, risk factors, and clinical relevance

Abstract: Thicker corneas tended to develop an OBL during femtosecond laser-assisted LASIK surgery. An OBL did not affect postoperative visual acuity except for a mild decrease in scotopic contrast sensitivity.

Cited by 40 publications

References 12 publications

Opaque Bubble Layer Risk Factors in Femtosecond Laser-assisted LASIK

Opaque Bubble Layer Risk Factors in Femtosecond Laser-assisted LASIK

Photorefractive keratectomy for correcting residual refractive error following cataract surgery with premium intraocular lens implantation

Chung’s swing technique: a new technique for small-incision lenticule extraction

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