| The Morphometric Analysis of Filtering Bleb Using Anterior Segment Optical Coherence Tomography: Pilot Study. |
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Joo Youn Shin, Sung Yong Kang, Na Rae Kim, Samin Hong, Gong Je Seong, Chan Yun Kim |
1The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. kcyeye@yuhs.ac
2Department of Ophthalmology, University of Ulsan College of Medicine, Seoul, Korea. |
| 전안부 광간섭 단층촬영을 이용한 여과포의 형태학적 분석: 사전 연구 |
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신주연1ㆍ강성용2ㆍ김나래1ㆍ홍사민1ㆍ성공제1ㆍ김찬윤1 |
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The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine1, Seoul, Korea, Department of Ophthalmology, University of Ulsan College of Medicine2, Seoul, Korea |
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| Abstract |
PURPOSE
To evaluate intrableb morphology and function after trabeculectomy using anterior segment optical coherence tomography (AS-OCT). METHODS: Twenty-eight post-trabeculectomy eyes from patients with primary open-angle glaucoma were examined using AS-OCT. Intrableb structures, including bleb wall thickness, subconjunctival fluid, suprascleral fluid and the route under the scleral flap, were measured at the center of the bleb using AS-OCT and were classified according to their slit-lamp appearance. Blebs were classified as successful (IOP< or =18 mmHg without ocular hypotensive medication) and failed (IOP>18 mmHg or use of ocular hypertensive medication.) in order to compare parameters between the two groups. RESULTS: The blebs were classified as either diffuse filtering (n=17), cystic (n=5), encapsulated (n=3) or flattened (n=3) according to slit lamp appearance and were correlated with AS-OCT images. Blebs were classified as successful and failed in order to compare parameters between the two groups. Significant differences were observed between the two groups in regard to subconjunctival fluid space (p=0.0004). No significant differences were observed in bleb wall thickness (p=0.098), suprascleral fluid space (p=0.87) or the route under the scleral flap (p=0.196). CONCLUSIONS: AS-OCT images of the intrableb structures were correlated with the appearance of the slit lamp, and a large subconjunctival space was associated with good bleb function. AS-OCT is useful for evaluating blebs; further studies should be performed to verify these findings. |
| Key Words:
Anterior segment OCT;Bleb function;Intrableb morphology |
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