Changes in Corneal Topography after 25-Gauge Transconjunctival Sutureless Vitrectomy versus after 20-Gauge Standard Vitrectomy

Okamoto, Fumiki; Okamoto, C.; Sakata, Nobuchika; Hiratsuka, K.; Yamane, N.; Hiraoka, Takahiro; Kaji, Yuichi; Oshika, Tetsuro

doi:10.1016/j.ophtha.2007.01.034

Cited by 114 publications

(85 citation statements)

References 34 publications

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“…There is very significant stability for all the measured parameters between the preoperative and the postoperative conditions, as was shown for the 25-gauge transconjunctival sutureless vitrectomy in previous studies. 26,27 The self-sealing sclerotomies and the sutureless scleral and conjunctival incisions explain the corneal curvature stability after the procedure. By contrast, the conventional 20-gauge vitrectomy is responsible for significant corneal topographic changes in the first preoperative days or weeks.…”

Section: Discussionmentioning

confidence: 99%

“…By contrast, the conventional 20-gauge vitrectomy is responsible for significant corneal topographic changes in the first preoperative days or weeks. [27][28][29] The 23-gauge system appears to be less invasive than the conventional 20-gauge sutured vitrectomy with less postoperative inflammation and a decrease in the operating time linked, above all, to the type of incision. It allows a faster recovery time for the patient.…”

Section: Discussionmentioning

confidence: 99%

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23-Gauge transconjunctival sutureless pars plana vitrectomy: results of a prospective study

Schweitzer

Colin

et al. 2009

Eye

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Purpose To evaluate results of 23-gauge transconjunctival sutureless vitrectomy in various indications of vitreoretinal diseases. Design Prospective, non-comparative study. Materials and methods Fifty-seven consecutive eyes of 57 patients underwent vitreoretinal surgery by one surgeon using the 23-gauge, two-step instrumentation developed by Dutch Ophthalmic Research Center Inc., for epiretinal membranes (n ¼ 24), macular holes (n ¼ 10), diabetic retinopathy (n ¼ 4), rhegmatogenous retinal detachment (n ¼ 3), silicone oil removal (n ¼ 10), and other procedures (n ¼ 4). Mean operative time and intraoperative and postoperative complications were recorded. At 1 month, postoperative visual acuity, anatomical results, and induced astigmatism measured by Orbscan (BAUSCH and LOMB laboratories Inc., Rochester, NY, USA) were analysed. Results Mean operative time was 32.6±21.5 min. At 1 month, mean visual acuity improved from 1.09±0.82 to 0.80±0.79 logMar. Transient postoperative hypotony was the most common complication (21.1%), resolving without treatment. There was no choroidal effusion; and no postoperative endophthalmitis was observed. There were no significant changes in mean keratometry (P ¼ 0.957), mean axis (P ¼ 0.818), and power of astigmatism (P ¼ 0.860) at 1 month. Conclusions A 23-gauge vitrectomy seems to be safe and effective for a wide range of indications for vitreoretinal surgery. Further studies are needed to compare it with 25-gauge and 20-gauge vitrectomy in larger series.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

23-Gauge transconjunctival sutureless pars plana vitrectomy: results of a prospective study

Schweitzer

Colin

et al. 2009

Eye

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“…9,10,15 We evaluated astigmatic changes after 23GTSV using Naeser's polar method, and we were able to evaluate not only changes in astigmatism magnitude, but changes in its direction, as well. To our knowledge, this is the first report to use corneal topography to evaluate postsurgical astigmatism induced by 23GTSV.…”

Section: Discussionmentioning

confidence: 99%

“…10,[15][16][17] We performed sclerotomy incisions at three points: superotemporal, superonasal, and inferotemporal quadrants. These were located at symmetrical points between the right and left eyes.…”

Section: Discussionmentioning

confidence: 99%

“…The 20-gauge vitrectomy group showed significant changes in corneal topography, whereas the 25-gauge TSV group did not. 10 The sclerotomy size in 23-gauge transconjunctival sutureless vitrectomy (23GTSV) is 0.7 mm and has a greater potential for causing SIA than 25-gauge sclerotomy does (0.5 mm). However, most of the reports on postoperative astigmatic changes after TSV have evaluated the 25-gauge system, so no data is available to determine whether SIA is significant after 23GTSV.…”

Section: Introductionmentioning

confidence: 99%

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Surgically induced astigmatism after 23-gauge transconjunctival sutureless vitrectomy

Hyon

Woo

et al. 2009

Eye

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Purpose: To evaluate surgically induced astigmatism (SIA) after 23-gauge transconjunctival sutureless vitrectomy (23GTSV). Methods: We studied 56 patients (56 eyes) who underwent 23GTSV between January 2006 and December 2007 and who underwent preoperative and 1-and 3-4-months postoperative corneal topography. Fifteen of the 56 patients underwent combined 23GTSV and cataract surgery. SIA was evaluated with Naeser's polar method using the simulated keratometric values obtained with corneal topography. Preoperative and postoperative KP and DKP values were compared in the 23GTSV only group and the combined 23GTSV and cataract surgery group. Results: There were no significant serial changes between the preoperative and postoperative Sim K astigmatism or KP values in the 23GTSV only group. In the 23GTSV only group, the DKP (90) was negative (À0.10 ± 0.78) at 1 month postoperatively, but it became positive (0.13 ± 0.85) at 3-4 months postoperatively. The DKP (135) showed serially decreasing negative values, À0.02±0.80 at 1 month postoperatively and À0.08±0.60 at 3-4 months postoperatively. In the combined cataract surgery group, the 1-and 3-4-month postoperative DKP (135) values were À0.64 ± 0.50 and À0.71 ± 0.48, respectively, which represented a significant decrease compared with the 23GTSV only group (Po0.001, Mann-Whitney U-test). Although statistically insignificant, the DKP (135) value was more negative in the sclerotomy-sutured group (n ¼ 6) than the sclerotomy non-sutured group (n ¼ 35) at 1 month postoperatively (À0.67±1.19 vs 0.09 ± 0.67, P ¼ 0.110, Mann-Whitney U-test). Conclusion: The 23GTSV does not induce significant SIA in the early postoperative period.

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Treatment of Proliferative Diabetic Retinopathy

Pautler

2010

Diabetic Retinopathy

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Changes in Corneal Topography after 25-Gauge Transconjunctival Sutureless Vitrectomy versus after 20-Gauge Standard Vitrectomy

Abstract: Twenty-five-gauge transconjunctival sutureless vitrectomy does not induce significant changes in corneal topography and exerts little influence on the optical quality of the cornea.

Cited by 114 publications

References 34 publications

23-Gauge transconjunctival sutureless pars plana vitrectomy: results of a prospective study

23-Gauge transconjunctival sutureless pars plana vitrectomy: results of a prospective study

Surgically induced astigmatism after 23-gauge transconjunctival sutureless vitrectomy

Treatment of Proliferative Diabetic Retinopathy

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