Ian A Thompson1, Alia K Durrani1, Shriji Patel2. 1. Vanderbilt Eye Institute, Nashville, TN, 37232, USA. 2. Vanderbilt Eye Institute, Nashville, TN, 37232, USA. shriji.patel@vanderbilt.edu.
Abstract
PURPOSE: The purpose of this study is to measure optical coherence tomography angiography (OCTA)-defined retinal vascular and choriocapillaris parameters in diabetic patients without clinically evident diabetic retinopathy. METHODS: Retrospective case series of eyes in patients with a documented history of either type 1 or type 2 diabetes mellitus without any clinical signs of diabetic retinopathy seen at the Vanderbilt Eye Institute. All eyes underwent dilated funduscopic examination along with OCTA. OCTA analytics were performed to calculate vessel density, flow area, and foveal avascular zone size. RESULTS: Thirty-seven eyes of 20 patients were included in the analysis. The mean glycated hemoglobin A1c of the 20 patients was 7.2%. All patients underwent dilated funduscopic examination by a fellowship-trained retina specialist. No patients had any overt retinopathy on clinical examination. Fifteen eyes had vascular abnormalities (microaneurysms) present on OCTA. Patients with microaneurysms and patients without microaneurysms were compared. Vessel density of the 6 × 6 mm macular cube images was significantly increased in patients with microaneurysms compared with patients without microaneurysms. There were no other significant differences in OCTA characteristics. CONCLUSION: OCTA can detect microvascular changes not otherwise noted on dilated clinical examination. These pre-clinical findings may facilitate earlier intervention for improved glycemic control and prevention of the onset of clinical retinopathy.
PURPOSE: The purpose of this study is to measure optical coherence tomography angiography (OCTA)-defined retinal vascular and choriocapillaris parameters in diabeticpatients without clinically evident diabetic retinopathy. METHODS: Retrospective case series of eyes in patients with a documented history of either type 1 or type 2 diabetes mellitus without any clinical signs of diabetic retinopathy seen at the Vanderbilt Eye Institute. All eyes underwent dilated funduscopic examination along with OCTA. OCTA analytics were performed to calculate vessel density, flow area, and foveal avascular zone size. RESULTS: Thirty-seven eyes of 20 patients were included in the analysis. The mean glycated hemoglobin A1c of the 20 patients was 7.2%. All patients underwent dilated funduscopic examination by a fellowship-trained retina specialist. No patients had any overt retinopathy on clinical examination. Fifteen eyes had vascular abnormalities (microaneurysms) present on OCTA. Patients with microaneurysms and patients without microaneurysms were compared. Vessel density of the 6 × 6 mm macular cube images was significantly increased in patients with microaneurysms compared with patients without microaneurysms. There were no other significant differences in OCTA characteristics. CONCLUSION:OCTA can detect microvascular changes not otherwise noted on dilated clinical examination. These pre-clinical findings may facilitate earlier intervention for improved glycemic control and prevention of the onset of clinical retinopathy.
Authors: T Qaum; Q Xu; A M Joussen; M W Clemens; W Qin; K Miyamoto; H Hassessian; S J Wiegand; J Rudge; G D Yancopoulos; A P Adamis Journal: Invest Ophthalmol Vis Sci Date: 2001-09 Impact factor: 4.799
Authors: Douglas Matsunaga; Jack Yi; Carmen A Puliafito; Amir H Kashani Journal: Ophthalmic Surg Lasers Imaging Retina Date: 2014 Nov-Dec Impact factor: 1.300
Authors: Talisa E de Carlo; Marco A Bonini Filho; Adam T Chin; Mehreen Adhi; Daniela Ferrara; Caroline R Baumal; Andre J Witkin; Elias Reichel; Jay S Duker; Nadia K Waheed Journal: Ophthalmology Date: 2015-03-17 Impact factor: 12.079
Authors: C P Wilkinson; Frederick L Ferris; Ronald E Klein; Paul P Lee; Carl David Agardh; Matthew Davis; Diana Dills; Anselm Kampik; R Pararajasegaram; Juan T Verdaguer Journal: Ophthalmology Date: 2003-09 Impact factor: 12.079
Authors: Thomas S Hwang; Yali Jia; Simon S Gao; Steven T Bailey; Andreas K Lauer; Christina J Flaxel; David J Wilson; David Huang Journal: Retina Date: 2015-11 Impact factor: 4.256
Authors: Niccolò Castellino; Antonio Longo; Matteo Fallico; Andrea Russo; Vincenza Bonfiglio; Gilda Cennamo; Federica Fossataro; Gabriella Fabbrocini; Anna Balato; Guglielmo Parisi; Rosa Maria D'urso; Francesco Lacarrubba; Maria Letizia Musumeci; Pietro Alosi; Francesco Petrillo; Giuseppe Micali; Teresio Avitabile; Michele Reibaldi Journal: Front Neurosci Date: 2021-01-25 Impact factor: 4.677
Authors: David Le; Minhaj Alam; Cham K Yao; Jennifer I Lim; Yi-Ting Hsieh; Robison V P Chan; Devrim Toslak; Xincheng Yao Journal: Transl Vis Sci Technol Date: 2020-07-02 Impact factor: 3.283
Authors: Kai Yuan Tey; Kelvin Teo; Anna C S Tan; Kavya Devarajan; Bingyao Tan; Jacqueline Tan; Leopold Schmetterer; Marcus Ang Journal: Eye Vis (Lond) Date: 2019-11-18