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Retinal Vascular Reactivity as Assessed by Optical Coherence Tomography Angiography
Published on: March 26, 2020
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Intensive Glycemic Management Is Associated With Reduced Retinal Structure Abnormalities on Ocular Coherence
Barbara Blodi1, Thomas W Gardner2, Xiaoyu Gao3
1Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison.
Diabetes Care
|March 29, 2024
Summary
Early intensive glycemic management in type 1 diabetes (T1D) reduces retinal abnormalities like disorganization of retinal inner layers (DRIL). Intensive management benefits the retina beyond standard eye exams, showing long-term advantages.
Area of Science:
- Ophthalmology
- Endocrinology
- Diabetology
Background:
- Type 1 diabetes (T1D) can lead to diabetic retinopathy, a leading cause of vision loss.
- Optical coherence tomography (OCT) allows detailed imaging of retinal structure.
- Long-term effects of glycemic control on retinal morphology in T1D are not fully understood.
Purpose of the Study:
- To investigate quantitative and qualitative retinal structure changes using OCT in T1D.
- To associate these retinal changes with systemic and ocular risk factors.
- To evaluate the long-term impact of intensive versus conventional glycemic management on retinal health.
Main Methods:
- Utilized OCT imaging from the Epidemiology of Diabetes Interventions and Complications (EDIC) study (2019-2022).
- Analyzed data from 937 participants with T1D, comparing original intensive (INT) and conventional (CONV) glycemic management groups.
- Performed multivariable analyses to identify associations between retinal changes and various risk factors.
Main Results:
- Participants from the CONV group showed higher rates of disorganization of retinal inner layers (DRIL), intraretinal fluid, and intraretinal cysts.
- Independent associations were found between central subfield thickness changes and sex, age, smoking, blood pressure, history of macular edema, and anti-VEGF treatment.
- HbA1c, BMI, and ocular surgery history were associated with DRIL; visual acuity decline correlated with retinal thinning.
Conclusions:
- Early intensive glycemic management in T1D is linked to a reduced risk of DRIL.
- DRIL was associated with a history of macular edema, ocular surgery, and worse visual acuity.
- Intensive glycemic management offers retinal benefits beyond those detectable by funduscopy or ophthalmoscopy.
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