정상안에서 파장가변 빛간섭 단층촬영을 이용한 유리체 피질과 후유리체박리의 관찰
Evaluation of the Cortical Vitreous Using Swept-Source Optical Coherence Tomography in Normal Eyes
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목적: 정상안에서 파장가변 빛간섭 단층촬영을 이용하여 유리체 피질 및 후유리체박리를 관찰하고 분석해 보았다. 대상과 방법: 정상안 80안을 파장가변 빛간섭 단층촬영의 12-mm horizontal line scan 프로토콜을 이용해 검사를 시행하였다. 내장된 caliper를 이용하여 bursa premacularis의 크기를 측정하고, 후유리체박리 정도를 평가하였다. 결과: Bursa premacularis의 모양은 대체적으로 보트 모양을 보였으며 약 63%의 환자에서 관찰되었다. 후유리체박리가 없거나 일부인 경우에서 완전 유리체 박리가 일어난 경우보다 더 bursa premacularis가 잘 관찰되었다. Bursa premacularis의 크기는 평균 폭 7,679.1 μm 깊이는 471.4 μm였다. 결론: 파장가변 빛간섭 단층촬영은 후유체박리와 유리체 피질을 in vivo 상태에서 관찰 가능하게 하며 향후 망막질환에 따른 유리체 피질 변화를 연구하는 데 도움을 줄 것으로 생각된다.
Abstract
Purpose: To observe the shape of posterior vitreous spaces using swept-source optical coherence tomography (SS-OCT) in normal eyes. Methods: The posterior vitreous of 80 eyes of 80 volunteers without ocular disease was imaged. The DRI OCT-1 Atlantis (Topcon, Oakland, NJ, USA) was used to acquire scans of the posterior vitreous over an 18 x 18-mm2 area using the 12-mm horizontal line scan protocol. The size of the premacularis bursa was measured by the aliper function of the OCT. Results: A boat-shape bursa was found in most cases. The prevalence of detected bursa fell with further increases in the extent of posterior vitreous detachment. The mean width of the bursa premacularis was 7,679.1 μm and the mean depth was 471.4 μm. Conclusions: Deep range imaging optical coherence tomography will provide improvement for in vivo anatomic characterization of the cortical vitreous, and allow better visualization of the dimensions of the bursa premacularis.
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