International journal of ophthalmology · 2011
Visual outcome of manual small-incision cataract surgery: comparison of modified Blumenthal and Ruit techniques.
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Kongsap Pipat
Аннотация
AIM: To compare the efficacy and visual results of the modified Blumenthal and Ruit techniques for manual small-incision cataract surgery (MSICS).
METHODS: This was a prospective, non-randomized comparison of 129 patients with senile cataracts scheduled to undergo routine cataract surgery via either a superior scleral tunnel incision, i.e., the Blumenthal technique (group 1, n=64) or a temporal scleral tunnel incision, i.e., the Ruit technique (group 2, n=65). MSICS and intraocular lens implantation were performed through an unsutured 6.5- to 7.0-mm scleral tunnel incision. Uncorrected and corrected visual acuity, intraoperative and postoperative complications, and surgically induced astigmatism calculated by simple subtraction were compared. Patients were examined at 1 day, 1 week, 1 month, and 3 months after surgery.
RESULTS: Both groups achieved good visual outcome with minor complications. Three months after surgery, the corrected visual acuity was 0.73 in the Blumenthal group and 0.69 in the Ruit group (P=0.29). The average (SD) postoperative astigmatism was 0.87 (0.62) diopter (D) for the Blumenthal group and 0.86 (0.62) D for the Ruit group. The mean (SD) surgically induced astigmatism was 0.55 (0.45) D and 0.50 (0.44) D for the Blumenthal and Ruit groups, respectively (P=0.52). Common complications were minimal hyphema and corneal edema. There was no statistically significant difference in the complication rate between the groups (P>0.05).
CONCLUSION: In MSICS, both the Blumenthal and Ruit techniques achieved good visual outcomes, with low complication rates.
METHODS: This was a prospective, non-randomized comparison of 129 patients with senile cataracts scheduled to undergo routine cataract surgery via either a superior scleral tunnel incision, i.e., the Blumenthal technique (group 1, n=64) or a temporal scleral tunnel incision, i.e., the Ruit technique (group 2, n=65). MSICS and intraocular lens implantation were performed through an unsutured 6.5- to 7.0-mm scleral tunnel incision. Uncorrected and corrected visual acuity, intraoperative and postoperative complications, and surgically induced astigmatism calculated by simple subtraction were compared. Patients were examined at 1 day, 1 week, 1 month, and 3 months after surgery.
RESULTS: Both groups achieved good visual outcome with minor complications. Three months after surgery, the corrected visual acuity was 0.73 in the Blumenthal group and 0.69 in the Ruit group (P=0.29). The average (SD) postoperative astigmatism was 0.87 (0.62) diopter (D) for the Blumenthal group and 0.86 (0.62) D for the Ruit group. The mean (SD) surgically induced astigmatism was 0.55 (0.45) D and 0.50 (0.44) D for the Blumenthal and Ruit groups, respectively (P=0.52). Common complications were minimal hyphema and corneal edema. There was no statistically significant difference in the complication rate between the groups (P>0.05).
CONCLUSION: In MSICS, both the Blumenthal and Ruit techniques achieved good visual outcomes, with low complication rates.