研究目的
To document and characterise hyper- and hypo-re?ective lesions, described as 'granular' on short-wavelength auto?uorescence (SW-AF) and near-infrared (NIR)-AF images in diabetic macular oedema (DMO), and evaluate their association with visual acuity and spectral-domain optical coherence tomography (SD-OCT) images.
研究成果
Granular lesions on both SW-AF and NIR-AF images are related to retinal oedema with photoreceptor damage and concomitant visual acuity reduction in DMO, suggesting their clinical relevance.
研究不足
The study is retrospective and the qualitative lesions were subjectively evaluated. Participants were all Asians, limiting generalizability. Pathohistological study did not elucidate the origin of abnormal auto?uorescence in DMO.
1:Experimental Design and Method Selection:
Retrospective review of 103 eyes of 78 patients with centre-involving DMO. Mosaics of hyper- and hypo-?uorescent dots on SW-AF and NIR-AF images were delineated as granular lesions.
2:Sample Selection and Data Sources:
Consecutive patients visiting the Department of Ophthalmology at Kyoto University Hospital from June 2010 to June 2013 with sufficient quality SD-OCT and FAF images.
3:List of Experimental Equipment and Materials:
Fundus camera (TRC-50LX, Topcon, Tokyo, Japan), SD-OCT (Spectralis OCT, Heidelberg Engineering, Heidelberg, Germany), scanning laser ophthalmoscope (Heidelberg Retina Angiograph 2, Heidelberg Engineering).
4:Experimental Procedures and Operational Workflow:
Comprehensive ophthalmologic examinations, acquisition of 45° colour fundus photographs, SD-OCT scanning, and FAF imaging.
5:Data Analysis Methods:
Statistical analysis using Student’s t-test, Mann–Whitney U test, and Fisher exact test.
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