유리체절제술과 백내장 병합수술 중 시행한 후낭절제술이 굴절력에 미치는 영향
Postoperative Refractive Errors after Posterior Capsulectomy during Combined Vitrectomy and Cataract Surgery
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목적: 유리체절제술과 백내장 병합수술 중 후낭절제술을 시행한 경우에서 수술 전 예상 굴절력과 수술 후 실제 굴절력 간의 차이를알아보았다. 대상과 방법: 2013년 3월부터 2014년 5월까지 본원에서 유리체절제술과 백내장 병합수술을 받은 환자들 중 수술 후 3개월까지 추적관찰이 가능했던 33명 33안을 대상으로 수술 중 후낭절제술을 시행했던 환자들을 A군, 시행하지 않았던 환자들을 B군으로 나누어 두군의 수술 전 예상 굴절력과 수술 후 실제 굴절력을 후향적으로 분석하였다. 실제 굴절력은 수술 후 3개월에 측정한 구면렌즈대응치로 평가하였다. 결과: 유리체절제술과 백내장 병합수술 시 인공수정체 삽입술 후 후낭절제술을 시행했던 A군은 25명 25안이었고, 후낭절제술을 시행하지 않았던 B군은 8명 8안이었다. 수술 후 예상 굴절력과 실제 굴절력 간의 차이를 보면 A군에서 수술 전 인공수정체 예상 굴절력이-0.33 ± 0.46D였고 실제 굴절력은 -0.49 ± 0.55D로 평균적으로 -0.16 ± 0.38D (p=0.083)의 차이를 보였으나 통계적으로 유의하지 않았으며, B군에서 예상 굴절력은 -0.49 ± 0.77D였고 실제 굴절력은 -0.22 ± 0.59D로 평균 차이는 0.27 ± 0.29D (p=0.078)였고통계적으로 유의한 차이를 보이지 않았다. 결론: 유리체절제술과 백내장 병합수술에서 후낭절제술을 시행한 경우, 수술 후 3개월에 측정한 실제 굴절력은 예측하였던 굴절력과통계적으로 유의한 차이를 보이지 않았다. 다만 후낭절제술을 시행하지 않은 경우보다 약간의 근시 이행을 나타내는 경향을 보였다.
Abstract
Purpose: To evaluate the difference between the predicted and actual postoperative refractions after combined vitrectomy and cataract surgeries with a posterior capsulectomy. Methods: We performed a retrospective study of 33 eyes of 33 patients who underwent combined vitrectomy and cataract surgeries in our hospital between March 2013 and May 2014. The patients were divided into 2 groups: those who underwent a posterior capsulectomy (group A) and those who underwent combined vitrectomy and cataract surgeries (group B). The actual refractive errors were analyzed 3 months after surgery using spherical equivalent. We compared the results between the predicted and actual refractive errors in the two groups. Results: Group A consisted of 25 eyes of 25 patients and group B of 8 eyes of 8 patients. In group A, the average difference between predicted and actual postoperative refractive errors was -0.16 ± 0.38 D (p = 0.083). The predicted refraction was -0.33 ± 0.46 D and actual refraction was -0.49 ± 0.55 D in group A. There was no statistically significant difference between the predicted refraction and actual refractive errors in group A (p = 0.083). In group B, the average difference between predicted and actual postoperative refractive errors was 0.27 ± 0.29 D (p = 0.078). Additionally, the predicted refraction was -0.49 ± 0.77 D and actual refraction was -0.22 ± 0.59 D. The difference between the predicted refraction and actual refractive errors in group B was not statistically significant (p = 0.078). Conclusions: When a posterior capsulectomy is performed during combined vitrectomy and cataract surgery, no significant difference in refractive errors between the predicted refraction and actual refractive errors was observed 3 months after surgery. Compared with combined vitrectomy and cataract surgeries only, a small amount of myopic refractive change tended to occur 3 months after surgery.
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