Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture
Makoto Inoue,1 Dina Joy K Abulon,2 Akito Hirakata1 1Kyorin Eye Center, School of Medicine, Kyorin University, Tokyo, Japan; 2Alcon Research, Ltd., Irvine, CA, USA Purpose: To compare the effects of different 23- and 25-gauge microincision vitrectomy trocar cannula entry systems on incisio...
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2014-11-01
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| Series: | Clinical Ophthalmology |
| Online Access: | http://www.dovepress.com/comparison-of-the-effects-of-23-gauge-and-25-gauge-microincision-vitre-peer-reviewed-article-OPTH |
| _version_ | 1819242742564257792 |
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| author | Inoue M Abulon DJ Hirakata A |
| author_facet | Inoue M Abulon DJ Hirakata A |
| author_sort | Inoue M |
| collection | DOAJ |
| description | Makoto Inoue,1 Dina Joy K Abulon,2 Akito Hirakata1 1Kyorin Eye Center, School of Medicine, Kyorin University, Tokyo, Japan; 2Alcon Research, Ltd., Irvine, CA, USA Purpose: To compare the effects of different 23- and 25-gauge microincision vitrectomy trocar cannula entry systems on incision architecture.Methods: We tested one ridged microvitreoretinal (MVR), one non-ridged MVR, one pointed beveled, and one round-tipped beveled blade (n=10 per blade design per incision type). Each blade’s straight and oblique incision architecture was assessed in a silicone disc simulating the sclera. Wound leakage under pressure and endoscopic observations were conducted on sclerotomy sites of isolated porcine eyes (n=4 per blade design) after simulated vitrectomy.Results: Differences in blade design created distinct incision architecture. Incisions were linear with the ridged MVR blade, flattened “M-shaped” with the non-ridged MVR blade, asymmetrical chevron-shaped with the pointed beveled blade, and curved with the round-tipped beveled blade. With the exception of oblique entry incision thickness, both MVR blade designs created thinner incisions than the beveled blades at entry and exit sites. Only the ridged MVR blade created incisions with no leakage. Vitreous incarceration was observed with all trocar cannula systems.Conclusion: Wound closure in porcine eyes was similar with all blades despite differences in incision architecture. Wound leakage occurred at low to moderate infusion pressures with most blades; no wound leakage was observed with ridged MVR blades. Keywords: entry system, incision closure, leakage, pars plana incision, sclerotomy, trocar blade |
| first_indexed | 2024-12-23T14:44:38Z |
| format | Article |
| id | doaj.art-bbfc6c83025947048b2a54250ce25fa8 |
| institution | Directory Open Access Journal |
| issn | 1177-5483 |
| language | English |
| last_indexed | 2024-12-23T14:44:38Z |
| publishDate | 2014-11-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Clinical Ophthalmology |
| spelling | doaj.art-bbfc6c83025947048b2a54250ce25fa82022-12-21T17:43:07ZengDove Medical PressClinical Ophthalmology1177-54832014-11-012014default2307231819214Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architectureInoue MAbulon DJHirakata AMakoto Inoue,1 Dina Joy K Abulon,2 Akito Hirakata1 1Kyorin Eye Center, School of Medicine, Kyorin University, Tokyo, Japan; 2Alcon Research, Ltd., Irvine, CA, USA Purpose: To compare the effects of different 23- and 25-gauge microincision vitrectomy trocar cannula entry systems on incision architecture.Methods: We tested one ridged microvitreoretinal (MVR), one non-ridged MVR, one pointed beveled, and one round-tipped beveled blade (n=10 per blade design per incision type). Each blade’s straight and oblique incision architecture was assessed in a silicone disc simulating the sclera. Wound leakage under pressure and endoscopic observations were conducted on sclerotomy sites of isolated porcine eyes (n=4 per blade design) after simulated vitrectomy.Results: Differences in blade design created distinct incision architecture. Incisions were linear with the ridged MVR blade, flattened “M-shaped” with the non-ridged MVR blade, asymmetrical chevron-shaped with the pointed beveled blade, and curved with the round-tipped beveled blade. With the exception of oblique entry incision thickness, both MVR blade designs created thinner incisions than the beveled blades at entry and exit sites. Only the ridged MVR blade created incisions with no leakage. Vitreous incarceration was observed with all trocar cannula systems.Conclusion: Wound closure in porcine eyes was similar with all blades despite differences in incision architecture. Wound leakage occurred at low to moderate infusion pressures with most blades; no wound leakage was observed with ridged MVR blades. Keywords: entry system, incision closure, leakage, pars plana incision, sclerotomy, trocar blade http://www.dovepress.com/comparison-of-the-effects-of-23-gauge-and-25-gauge-microincision-vitre-peer-reviewed-article-OPTH |
| spellingShingle | Inoue M Abulon DJ Hirakata A Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture Clinical Ophthalmology |
| title | Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture |
| title_full | Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture |
| title_fullStr | Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture |
| title_full_unstemmed | Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture |
| title_short | Comparison of the effects of 23-gauge and 25-gauge microincision vitrectomy blade designs on incision architecture |
| title_sort | comparison of the effects of 23 gauge and 25 gauge microincision vitrectomy blade designs on incision architecture |
| url | http://www.dovepress.com/comparison-of-the-effects-of-23-gauge-and-25-gauge-microincision-vitre-peer-reviewed-article-OPTH |
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