Comparaison en tomographie en cohérence optique (OCT Visante®) de la prédictibilité de la profondeur d’implantation des anneaux intracornéens après tunnélisation mécanique versus tunnélisation assistée au laser femtoseconde

Kouassi, F.X.; Buestel, C.; Raman, Bhavani; Melinte, Daniel Octavian; Touboul, David; Gallois, Anne; Colin, Joseph

doi:10.1016/j.jfo.2011.03.014

Cited by 14 publications

(4 citation statements)

References 17 publications

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“…Interestingly, Barbara et al [ 26 ] observed that all 30 segments implanted were more superficial than expected. Kouassi et al [ 29 ] observed that superficial ring placement could be observed, regardless of the tunneling technique. Manual and femtosecond laser techniques placed segments more superficially than intended by 76 μm and 86 μm, respectively.…”

Section: Discussionmentioning

confidence: 99%

Delayed Perforation of an Intrastromal Corneal Ring Segment into the Anterior Chamber: A Case Report and Review of the Literature

Moshirfar

Milner

Martheswaran

et al. 2021

Case Rep Ophthalmol

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Intrastromal corneal ring segments (ICRSs) are an effective treatment for stabilizing and normalizing corneal shape in patients with keratoconus and other corneal ectasias. Intraoperative segment perforation through the corneal endothelium into the anterior chamber (AC) is an uncommon but known complication. However, perforation into the AC postoperatively is an exceedingly rare complication with only 3 reported cases in the literature. One case was due to Descemet membrane detachment and another due to ocular trauma. In the third case, the mechanism for perforation was unclear. We present the fourth case of delayed ICRS perforation due to silent migration through the endothelium into the AC. We also present all reported cases in the literature of intraoperative and postoperative perforation into the AC.

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Section: Discussionmentioning

confidence: 99%

Delayed Perforation of an Intrastromal Corneal Ring Segment into the Anterior Chamber: A Case Report and Review of the Literature

Moshirfar

Milner

Martheswaran

et al. 2021

Case Rep Ophthalmol

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“…The mean difference between the depth expected before the operation and the final implant depth was 76.64 μm in the mechanical group and 85.85 μm in the Femtosecond-assisted group, with no significant differences between the two groups. Their study showed that shallower Intacs implant depths had been created in both methods compared to the expected depth [ 20 ]. Gorgun et al measured anterior stromal thickness from the Ferrara segment apex after ring implantation using a Femtosecond laser along with an AS-OCT and found that the Ferrara segments were implanted 97 μm shallower on average [ 16 ].…”

Section: Discussionmentioning

confidence: 99%

“…In some of these studies, actual versus intended insertion depth were assessed whereas others evaluated visual outcomes relative to intracorneal ring depth. In addition, pocket creation for intracorneal ring implantation using femtosecond laser and PocketMaker has been compared in several studies [ 20 – 23 ]. However, to the best of our knowledge, there are no reports on the MyoRing implantation depth measurement using AS-OCT images and comparison of its insertion by two methods including PocketMaker and Melles hook.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the MyoRing implantation depth by mechanical dissection using PocketMaker microkeratome versus Melles hook via AS-OCT

et al. 2018

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BackgroundThis paper seeks to evaluate the depth and outcomes of MyoRing implantation using two mechanical dissection procedures including: PocketMaker microkeratome in opposition to the Melles hook method.MethodsThis retrospective study was carried out on 39 eyes of 38 keratoconus patients (28 male and 10 female) with the mean age of years and had undergone MyoRing implantation by the two mentioned methods. The MyoRing was inserted into the corneal pocket which was made manually in 18 eyes (Melles hook group) or with PocketMaker microkeratome in 21 eyes (PocketMaker group). The mean follow up time was months with pre-operative and post-operative ophthalmic examination including uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), keratometry readings and central corneal thickness measurement. AS-OCT (Casia, SS-1000, Tomey, Nagoya, Japan) imaging was used to measure MyoRing insertion depth, exactly.ResultsPre-operative and post-operative UCVA (LogMAR) mean change for the PocketMaker and Melles hook groups were recorded at 0.75 ± 0.32 and 0.78 ± 0.33, respectively. Similarly, BCVA (LogMAR) mean change were 0.27 ± 0.22 and 0.23 ± 0.22. Mean keratometry (Kmean) change were 6.06 ± 4.18 and 6.56 ± 3.55 respectively. UCVA change (P = 0.767), BCVA change (P = 0.77) and Kmean change (P = 0.693) showed that there was no statistically significant difference between both groups for any parameter. Depth measurements achieved from AS-OCT images showed that there was no statistically significant difference in pocket depth between two methods of MyoRing implantation (P = 0.413).ConclusionsThe results of Myoring implantation outcomes using mechanical dissection via PocketMaker microkeratome as against Melles hook are comparable.

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“…La tomographie en cohérence optique du segment anté-rieur (OCT-SA) est une technique d'imagerie non invasive de plus en plus utilisée pour l'analyse des pathologies cornéennes [4][5][6][7][8]. Grâce aux nouveaux OCT dit « spectral domain », il est aujourd'hui possible d'obtenir des images de haute résolution avec un temps d'acquisition très court et ainsi, de reconstruire des images parallèles à la surface de la cornée dites « en face ».…”

Section: Introductionunclassified

Apport de l’OCT de segment antérieur « en face » dans le kératocône aigu

Kallel

Hassani

Liang

et al. 2014

Journal Français d'Ophtalmologie

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Comparaison en tomographie en cohérence optique (OCT Visante®) de la prédictibilité de la profondeur d’implantation des anneaux intracornéens après tunnélisation mécanique versus tunnélisation assistée au laser femtoseconde

Cited by 14 publications

References 17 publications

Delayed Perforation of an Intrastromal Corneal Ring Segment into the Anterior Chamber: A Case Report and Review of the Literature

Delayed Perforation of an Intrastromal Corneal Ring Segment into the Anterior Chamber: A Case Report and Review of the Literature

Comparison of the MyoRing implantation depth by mechanical dissection using PocketMaker microkeratome versus Melles hook via AS-OCT

Apport de l’OCT de segment antérieur « en face » dans le kératocône aigu

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