Corneal topographic changes after transconjunctival 23-gauge sutureless vitrectomy

  • Ates Yanyali
  • Fatih Horozoglu
  • Aydin Macin
  • Kansu Tahir Bozkurt
  • Veysel Aykut
  • Banu Torun Acar
  • Ahmet Fazıl Nohutcu
Original Paper

Abstract

To evaluate the topographic changes of cornea after pars plana vitrectomy (PPV) with the 23-gauge- (23-G) transconjunctival sutureless vitrectomy (TSV) system within the first postoperative month. In this prospective study, corneal topographic changes were evaluated in 24 eyes of 24 patients who underwent PPV with the 23-G TSV system. All eyes underwent computer-assisted videokeratography using NAVIS (Nidek Advanced Vision Information System) software preoperatively and at the first day, first week, and first month postoperatively. The topographic parameters that were analyzed statistically were the average corneal power (ACP), corneal surface cylinder (CSC), surface asymmetry index (SAI), and surface regularity index (SRI). Mean induced astigmatism was estimated by vector analysis software. The Wilcoxon test was used for statistical analysis. Mean ACP was 43.12 ± 1.16 diopters (D) preoperatively and 42.88 ± 1.44 D at first day (P = 0.301), 43.04 ± 1.14 D at first week (P = 0.796), and 43.32 ± 1.17 D at first month postoperatively (P = 0.187). Mean CSC was 0.61±0.32 D preoperatively and 0.71 ± 0.48 D at first day (P = 0.918), 0.60 ± 0.25 D at first week (P = 0.826), and 0.70 ± 0.33 D at first month postoperatively (P = 0.414). Mean SAI was 0.12 ± 0.05 preoperatively and 0.21 ± 0.16 at first day (P = 0.070), 0.15 ± 0.06 at first week (P = 0.176), and 0.16 ± 0.09 at first month postoperatively (P = 0.198). Mean SRI was 0.41 ± 0.37 preoperatively and 1.05 ± 0.41 at first day (P = 0.001), 0.54 ± 0.42 at first week (P = 0.211), and 0.41 ± 0.5 at first month postoperatively (P = 0.861). Mean surgically induced astigmatism was 0.67 ± 0.7 D at first day, 0.36 ± 0.2 D at first week, and 0.33 ± 0.17 D at first month postoperatively. Corneal surface and astigmatic changes were observed to be insignificant in the early postoperative period after PPV with the 23-G TSV system.

Keywords

Corneal astigmatism Corneal topography 23-gauge transconjunctival sutureless vitrectomy 

References

  1. 1.
    Wirbelauer C, Hoerauf H, Roider J, Laqua H (1998) Corneal shape changes after pars plana vitrectomy. Graefes Arch Clin Exp Ophthalmol 236:822–828. doi:10.1007/s004170050166 PubMedCrossRefGoogle Scholar
  2. 2.
    Hayashi H, Hayashi K, Nakao F, Hayashi F (1997) Corneal shape changes after scleral buckling surgery. Ophthalmology 104:831–837PubMedGoogle Scholar
  3. 3.
    Smiddy WE, Loupe DN, Michels RG, Enger C, Glaser BM, de Bustros S (1989) Refractive changes after scleral buckling surgery. Arch Ophthalmol 107:1469–1471PubMedGoogle Scholar
  4. 4.
    Goel R, Crewdson J, Chignell AH (1983) Astigmatism following retinal detachment surgery. Br J Ophthalmol 67:327–329. doi:10.1136/bjo.67.5.327 PubMedCrossRefGoogle Scholar
  5. 5.
    Fiore JV Jr, Newton JC (1970) Anterior segment changes following the scleral buckling procedure. Arch Ophthalmol 84:284–287PubMedGoogle Scholar
  6. 6.
    Jampel HD, Thompson JT, Nunez M, Michels RG (1987) Corneal astigmatic changes after pars plana vitrectomy. Retina 7:223–226. doi:10.1097/00006982-198707040-00004 PubMedCrossRefGoogle Scholar
  7. 7.
    Weinberger D, Lichter H, Loya N, Axer-Siegel R, Muzmacher L, Gabbay U, Yassur Y (1999) Corneal topographic changes after retinal and vitreous surgery. Ophthalmology 106:1521–1524. doi:10.1016/S0161-6420(99)90447-5 PubMedCrossRefGoogle Scholar
  8. 8.
    Fujii GY, De Juan E Jr, Humayun MS, Pieramici DJ, Chang TS, Awh C, Ng E, Barnes A, Wu SL, Sommerville DN (2002) A new 25-gauge instrument system for transconjunctival sutureless vitrectomy surgery. Ophthalmology 109:1807–1812. doi:10.1016/S0161-6420(02)01179-X PubMedCrossRefGoogle Scholar
  9. 9.
    Eckardt C (2005) Transconjunctival sutureless 23-gauge vitrectomy. Retina 25:208–211. doi:10.1097/00006982-200502000-00015 PubMedCrossRefGoogle Scholar
  10. 10.
    Fine HF, Iranmanesh R, Iturralde D, Spaide RF (2007) Outcomes of 77 consecutive cases of 23-gauge transconjunctival vitrectomy surgery for posterior segment disease. Ophthalmology 114:1197–1200. doi:10.1016/j.ophtha.2007.02.020 PubMedCrossRefGoogle Scholar
  11. 11.
    Fujii GY, De Juan E Jr, Humayun MS, Chang TS, Pieramici DJ, Barnes A, Kent D (2002) Initial experience using the transconjunctival sutureless vitrectomy system for vitreoretinal surgery. Ophthalmology 109:1814–1820. doi:10.1016/S0161-6420(02)01119-3 PubMedCrossRefGoogle Scholar
  12. 12.
    Yanyali A, Celik E, Horozoglu F, Oner S, Nohutcu AF (2006) 25-Gauge transconjunctival sutureless pars plana vitrectomy. Eur J Ophthalmol 16:141–147PubMedGoogle Scholar
  13. 13.
    Lakhanpal RR, Humayun MS, de Juan E Jr, Lim JI, Chong LP, Chang TS, Javaheri M, Fujii GY, Barnes AC, Alexandrou TJ (2005) Outcomes of 140 consecutive cases of 25-gauge transconjunctival surgery for posterior segment disease. Ophthalmology 112:817–824. doi:10.1016/j.ophtha.2004.11.053 PubMedCrossRefGoogle Scholar
  14. 14.
    Yanyali A, Celik E, Horozoglu F, Nohutcu AF (2005) Corneal topographic changes after transconjunctival (25-gauge) sutureless vitrectomy. Am J Ophthalmol 140:939–941. doi:10.1016/j.ajo.2005.05.042 PubMedCrossRefGoogle Scholar
  15. 15.
    Kim YK, Hyon JY, Woo SJ, Park KH, Yu YS, Chung H (2010) Surgically induced astigmatism after 23-gauge transconjunctival sutureless vitrectomy. Eye (Lond) 24:799–804. doi:10.1038/eye.2009.222 CrossRefGoogle Scholar
  16. 16.
    Jaffe NS (1981) Postoperative corneal astigmatism. In: Jaffe NS (ed) Cataract surgery and its complications. Mosby, St Louis, pp 92–110Google Scholar
  17. 17.
    Wilson SE, Verity SM, Conger DL (1992) Accuracy and precision of the corneal analysis system and the topographic modeling system. Cornea 11:28–35. doi:10.1097/00003226-199201000-00004 PubMedCrossRefGoogle Scholar
  18. 18.
    Dingeldein SA, Klyce SD, Wilson SE (1989) Quantitative descriptors of corneal shape derived from computer-assisted analysis of photokeratographs. Refract Corneal Surg 5:372–378PubMedGoogle Scholar
  19. 19.
    Alba-Bueno F, Beltran-Masgoret A, Sanjuan C, Biarnes M, Marin J (2009) Corneal shape changes induced by first and second generation silicone hydrogel contact lenses in daily wear. Cont Lens Anterior Eye 32:88–92. doi:10.1016/j.clae.2008.11.002 PubMedCrossRefGoogle Scholar
  20. 20.
    Wilson SE, Klyce SD (1991) Quantitative descriptors of corneal topography. A clinical study. Arch Ophthalmol 109:349–353PubMedGoogle Scholar
  21. 21.
    Alimisi S, Miltsakakis D, Klyce S (1996) Corneal topography for intraocular lens power calculations. J Refract Surg 12:S309–S311PubMedGoogle Scholar
  22. 22.
    Maeda N, Klyce SD, Smolek MK, McDonald MB (1997) Disparity between keratometry-style readings and corneal power within the pupil after refractive surgery for myopia. Cornea 16:517–524. doi:10.1097/00003226-199709000-00004 PubMedCrossRefGoogle Scholar
  23. 23.
    Bergmann MT, Koch DD, Zeiter JH (1988) The effect of scleral cautery on corneal astigmatism in cadaver eyes. Ophthalmic Surg 19:259–262PubMedGoogle Scholar
  24. 24.
    Domniz YY, Cahana M, Avni I (2001) Corneal surface changes after pars plana vitrectomy and scleral buckling surgery. J Cataract Refract Surg 27:868–872. doi:10.1016/S0886-3350(00)00755-0 PubMedCrossRefGoogle Scholar
  25. 25.
    Okamoto F, Okamoto C, Sakata N, Hiratsuka K, Yamane N, Hiraoka T, Kaji Y, Oshika T (2007) Changes in corneal topography after 25-gauge transconjunctival sutureless vitrectomy versus after 20-gauge standard vitrectomy. Ophthalmology 114:2138–2141. doi:10.1016/j.ophtha.2007.01.034 PubMedCrossRefGoogle Scholar
  26. 26.
    Avitabile T, Castiglione F, Bonfiglio V Transconjunctival sutureless 25-gauge versus 20-gauge standard vitrectomy: correlation between corneal topography and ultrasound biomicroscopy measurements of sclerotomy sites. Cornea 29:19–25. doi:10.1097/ICO.0b013e3181ab98ae

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Ates Yanyali
    • 1
  • Fatih Horozoglu
    • 2
  • Aydin Macin
    • 1
  • Kansu Tahir Bozkurt
    • 3
  • Veysel Aykut
    • 1
  • Banu Torun Acar
    • 1
  • Ahmet Fazıl Nohutcu
    • 1
  1. 1.Department of OphthalmologyHaydarpasa Numune Education and Research HospitalIstanbulTurkey
  2. 2.Department of OphthalmologyNamik Kemal University Faculty of MedicineTekirdagTurkey
  3. 3.Department of OphthalmologyGumussuyu Military HospitalIstanbulTurkey

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