Journal List > J Korean Ophthalmol Soc > v.53(12) > 1009258

TOOLS
Cho, Park, Yum, and Lee: Changes in Corneal Topography after 23-Gauge Transconjunctival Vitrectomy
Original Article
Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(12): 1801-1806.

Published online: 17 December 2012

DOI: https://doi.org/10.3341/jkos.2012.53.12.1801

Changes in Corneal Topography after 23-Gauge Transconjunctival Vitrectomy

Hyung Seok Cho, MD, Se Hoon Park, MD, Jung Hoon Yum, MD, Jong Hyun Lee, MD, PhD

Department of Ophthalmology, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.

Address reprint requests to Jong Hyun Lee, MD, PhD. Department of Ophthalmology, Inje University Ilsan Paik Hospital, #170 Juhwa-ro, Ilsanseo-gu, Goyang 411-706, Korea. Tel: 82-31-910-7240, Fax: 82-31-911-7241, ophtha@hanmail.net

Received 25 February 2012       Accepted 29 October 2012

Copyright © 2012 The Korean Ophthalmological Society

Abstract

Purpose

To evaluate the postoperative corneal topographic changes after 23-gauge transconjunctival vitrectomy.

Methods

Twenty eyes of 20 consecutive patients who required vitrectomy were included in the present study. The 23-gauge transconjunctival vitrectomy was performed by a single surgeon from September 2007 through November 2007. Videokeratography system (TMS-4, Tomey Co., Japan) was obtained preoperatively and at 1 day, 2 weeks, and 1 month postoperatively. The date changes of Fourier indices including spherical power, regular astigmatism, asymmetry, and higher-order irregularity were analyzed at the central 3- and 6-mm zone of the cornea.

Results

Twenty eyes, including eyes with proliferative diabetic retinopathy (n = 9), vitreous hemorrhage and opacity (n = 7), and epiretinal membrane (n = 4), underwent the operation. None of the Fourier indices significantly changed throughout the observation period (p < 0.05, Wilcoxon-signed-ranks test).

Conclusions

A 23-gauge transconjunctival vitrectomy does not induce significant changes in corneal topography even in the central 6-mm zone, as well as the 3-mm zone of the cornea.

Keywords: Corneal topography, 23-Gauge transconjunctival vitrectomy

Figures and Tables

Table 1
Comparison of Fourier Indices (3 mm and 6 mm pupil) meaured by videokratography system at preoperatively and postoperatively
jkos-53-1801-i001

Values are presented as mean ± SD.

p < 0.05, Wilcoxon-signed-ranks test.

Table 2
Comparison of Fourier Indices meaured by videokratography system at preoperatively and postoperatively in 15 eyes with combined cataract surgery and 23 gauge vitrectomy
jkos-53-1801-i002

Values are presented as mean ± SD.

p < 0.05, Wilcoxon-signed-ranks test.

References

1. Chen JC. Sutureless pars plana Vitrectomy through self-sealing sclerotomies. Arch Ophthalmol. 1996. 114:1273–1275.
2. Fujii GY, De Juan E Jr, Humayun MS, et al. A new 25-gauge instrument system for transconjunctival sutureless vitrectomy surgery. Ophthalmology. 2002. 109:1807–1812.
3. Fujii GY, De Juan E Jr, Humayun MS, et al. Initial experience using the transconjunctival sutureless vitrectomy system for vitreoretinal surgery. Ophthalmology. 2002. 109:1814–1820.
4. Ibarra MS, Hermel M, Prenner JL, Hassan TS. Longer-term outcomes of transconjunctival sutureless 25-gauge vitrectomy. Am J Ophthalmol. 2005. 139:831–836.
5. Kim MJ, Park KH, Hwang JM, et al. The safety and efficacy of transconjunctival sutureless 23-gauge vitrectomy. Korean J Ophthalmol. 2007. 21:201–207.
6. Fine HF, Iranmanesh R, Iturralde D, Spaide RF. Outcomes of 77 consecutive cases of 23-gauge transconjunctival vitrectomy surgery for posterior segment disease. Ophthalmology. 2007. 114:1197–1200.
7. Han JI, Cho SW, Lee TG, et al. The clinical results of sutureless vitrectomy using 23-gauge surgical system. J Korean Ophthalmol Soc. 2008. 49:911–916.
8. Domniz YY, Cahana M, Avni I. Corneal surface changes after pars plana vitrectomy and scleral buckling surgery. J Cataract Refract Surg. 2001. 27:868–872.
9. Wirbelauer C, Hoerauf H, Roider J, Laqua H. Corneal shape changes after pars plana vitrectomy. Graefes Arch Clin Exp Ophthalmol. 1998. 236:822–828.
10. Weinberger D, Lichter H, Loya N, et al. Corneal topographic changes after retinal and vitreous surgery. Ophthalmology. 1999. 106:1521–1524.
11. Azar-Arevalo O, Arevalo JF. Corneal topography changes after vitreoretinal surgery. Ophthalmic Surg Lasers. 2001. 32:168–172.
12. Slusher MM, Ford JG, Busbee B. Clinically significant corneal astigmatism and pars plana vitrectomy. Ophthalmic Surg Lasers. 2002. 33:5–8.
13. Okamoto F, Okamoto C, Sakata N, et al. Changes in corneal topography after 25-gauge transconjunctival sutureless vitrectomy versus after 20-gauge standard vitrectomy. Ophthalmology. 2007. 114:2138–2141.
14. Yanyali A, Celik E, Horozoglu F, Nohutcu AF. Corneal topographic changes after transconjunctival (25-gauge) sutureless vitrectomy. Am J Ophthalmol. 2005. 140:939–941.
15. Park DH, Shin JP, Kim SY. Surgically induced astigmatism in combined phacoemulsification and vitrectomy; 23-gauge transconjunctival sutureless vitrectomy versus 20-gauge standard vitrectomy. Graefes Arch Clin Exp Ophthalmol. 2009. 247:1331–1337.
16. Citirik M, Batman C, Bicer T, Zilelioglu O. Keratometric alterations following the 25-gauge transconjunctival sutureless pars plana vitrectomy versus the conventional pars plana vitrectomy. Clin Exp Optom. 2009. 92:416–420.
17. Kim YK, Hyon JY, Woo SJ, et al. Surgically induced astigmatism after 23-gauge transconjunctival sutureless vitrectomy. Eye. 2010. 24:799–804.
18. Galway G, Drury B, Cronin BG, Bourke RD. A comparison of induced astigmatism in 20- vs 25-gauge vitrectomy procedures. Eye. 2010. 24:315–317.
19. Yanyali A, Horozoglu F, Macin A, et al. Corneal topographic changes after transconjunctival 23-gauge sutureless vitrectomy. Int Ophthalmol. 2011. 31:277–282.
20. Joo CK, Han HK, Kim JH. Computer-assisted videokeratography to measure changes in astigmatism induced by sutureless cataract surgery. J Cataract Refract Surg. 1997. 23:555–561.
21. Koch DD, Haft EA, Gay C. Computerized videokeratographic analysis of corneal topographic changes induced by sutured and unsutured 4 mm scleral pocket incisions. J Cataract Refract Surg. 1993. 19:166–169.
22. Vass C, Menapace R, Rainer G. Corneal Topographic changes after frown and straight sclerocorneal incisions. J Cataract Refract Surg. 1997. 23:913–922.
23. Krishnamachary M, Basti S. Computerized topography of selective versus all-suture release to manage high astigmatism after cataract surgery. J Cataract Refract Surg. 1997. 23:1380–1383.
24. Park YM, Lee JE, Oum BS. Comparisons of Corneal Topographic Change Between 20-Gauge and 23-Gauge Pars Plana Vitrectomy. J Korean Ophthalmol Soc. 2009. 50:353–358.
25. Oshika T, Tomidokoro A, Maruo K, et al. Quantitative evaluation of irregular astigmatism by fourier series harmonic analysis of videokeratography data. Invest Ophthalmol Vis Sci. 1998. 39:705–709.
26. Oshika T, Tanabe T, Tomidokoro A, Amano S. Progression of keratoconus assessed by fourier analysis of videokeratography data. Ophthalmology. 2002. 109:339–342.
27. Tomidokoro A, Oshika T, Amano S, et al. Changes in anterior and posterior corneal curvatures in keratoconus. Ophthalmology. 2000. 107:1328–1332.
28. Tanabe T, Tomidokoro A, Samejima T, et al. Corneal regular and irregular astigmatism assessed by Fourier analysis of videokeratography data in normal and pathologic eyes. Ophthalmology. 2004. 111:752–757.
29. O'Malley C, Heintz RM Sr. Vitrectomy with an alternative instrument system. Ann Ophthalmol. 1975. 7:585–588. 591–594.
30. de Juan E Jr, Hickingbotham D. Refinements in micro-instrumentation for vitreous surgery. Am J Ophthalmol. 1990. 109:218–220.
31. Eckardt C. Transconjunctival sutureless 23-gauge Vitrectomy. Retina. 2005. 25:208–211.
32. Smolek MK, Klyce SD. Zernike polynomial fitting fails to represent all visually significant corneal aberrations. Invest Ophthalmol Vis Sci. 2003. 44:4676–4681.
33. Tomidokoro A, Oshika T, Amano S, et al. Quantitative analysis of regular and irregular astigmatism induced by pterygium. Cornea. 1999. 18:412–415.
34. Olsen T, Dam-Johansen M, Bek T, Hjortdal JO. Corneal versus scleral tunnel incision in cataract surgery: a randomized study. J Cataract Refract Surg. 1997. 23:337–341.
35. Hayashi K, Hayashi H, Oshika T, Hayashi F. Fourier analysis of irregular astigmatism after implantation of 3 types of intraocular lenses. J Cataract Refract Surg. 2000. 26:1510–1516.
36. Oshika T, Sugita G, Tanabe T, et al. Regular and irregular astigmatism after superior versus temporal scleral incision cataract surgery. Ophthalmology. 2000. 107:2049–2053.
37. Hayashi K, Hayashi H, Oshika T, Hayashi F. Fourier analysis of irregular astigmatism after trabeculectomy. Ophthalmic Surg Lasers. 2000. 31:94–99.
38. Tomidokoro A, Oshika T, Kojima T. Corneal astigmatism after scleral buckling surgery assessed by Fourier analysis of videokeratography data. Cornea. 1998. 17:517–521.
39. Bessho K, Maeda N, Watanabe H, et al. Fourier analysis of corneal astigmatic changes following photorefractive keratectomy. Semin Ophthalmol. 2003. 18:23–28.
40. Keller PR, McGhee CN, Weed KH. Fourier analysis of corneal topography data after photorefractive keratectomy. J Cataract Refract Surg. 1998. 24:1447–1455.
41. Tomidokoro A, Soya K, Miyata K, et al. Corneal irregular astigmatism and contrast sensitivity after photorefractive keratectomy. Ophthalmology. 2001. 108:2209–2212.
42. Hjortdal JO, Erdmann L, Bek T. Fourier analysis of video-keratographic data. A tool for separation of spherical, regular astigmatic and irregular astigmatic corneal power components. Ophthalmic Physiol Opt. 1995. 15:171–185.
43. Kagaya F, Tomidokoro A, Tanaka S, et al. Fourier series harmonic analysis of corneal topography following suture removal after penetrating keratoplasty. Cornea. 2002. 21:256–259.
44. Hiraoka T, Furuya A, Matsumoto Y, et al. Quantitative evaluation of regular and irregular corneal astigmatism in patients having overnight orthokeratology. J Cataract Refract Surg. 2004. 30:1425–1429.
45. Baek TM, Lee KH, Tomidokoro A, Oshika T. Corneal irregular astigmatism after laser in situ keratomileusis for myopia. Br J Ophthalmol. 2001. 85:534–536.
46. Olsen T, Dam-Johansen M, Bek T, Hjortdal JO. Corneal versus scleral tunnel incision in cataract surgery: a randomized study. J Cataract Refract Surg. 1997. 23:337–341.
47. Mendívil A. Frequency of induced astigmatism following phacoemulsification with suturing versus without suturing. Ophthalmic Surg Lasers. 1997. 28:377–381.
48. Yang HS, Ahn JH, Lew HM. The change of corneal shape after cataract operation analysed by Slit Scan Cornea tomography/pachymetry system(ORBSCAN TM). J Korean Ophthalmol Soc. 2000. 41:1544–1555.
49. Hsu SY, Wu WC. Comparison of phacoemulsification and planned extracapsular cataract extraction in combined pars plana vitrectomy and posterior chamber intraocular lens implantation. Ophthalmic Surg Lasers Imaging. 2005. 36:108–113.
TOOLS
Similar articles