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Abstract #22155 Published in IGR 10-4
Influence of cornea refractive power by the tunnel small-incision trabeculectomy
Wu X-H; Yin Z-G; Wang WInternational Journal of Ophthalmology 2008; 8: 1831-1832
AIM: To investigate the corneal curvature and corneal astigmatism before and after tunnel small-incision trabeculectomy. METHODS: Sixteen primary glaucoma patients (20 eyes), who aged over 40 years old, were selected and accepted the tunnel small-incision trabeculectomy. The vertical and horizontal corneal curvature, the value of keratoastigmatism, and the astigmatism peculiarity were investigated for pre- and post-operatively. RESULTS: The corrected vision improved or kept constant in 18 eyes, dropped in 2 eyes. The lens opacity was the cause for hypopsia. The vertical and horizontal corneal curvature had no significant difference 7 days, 1, 2, and 3 months after operation, compared with preoperative. (t = 0.44, 0.66, 0.74, 0.59; and t = 0.17, 0.89, 0.96, 0.36, respectively, P > 0.05). The value of keratoastigmatism had no significant difference before and after operation (t = 0.17, 0.89, 0.96, 0.36, P > 0.05). The relative values of regular astigmatism and against-the-rule astigmatism preoperative and 7 days, 1, 2, and 3 months after operation were 10: 10, 10: 10, 8: 10, 8: 12, and 7: 12, respectively. CONCLUSION: The tunnel small-incision trabeculectomy has no influence on cornea refractive power, and does not result in postoperative astigmatism. LA: Chinese
Dr. X.-H. Wu, Department of Ophthalmology, Pudong New District People's Hospital, Shanghai 201200, China. xsmpk@yahoo.com.cn