Abstract
Vision-threatening DR (vtDR) is commonly defined as moderate nonproliferative or more severe DR, or the presence of diabetic macular edema (DME). Modifiable risk factors of DR and vtDR are well-established in adults. This study identified risk factors associated with DR and vtDR in a large pediatric cohort with T1D. Medical chart review was performed of baseline visits of pediatric (≤21 yrs old) patients at an academic eye center from 2005-2020 to collect demographic characteristics, medical history and DR severity. Analyses were adjusted for correlation between eyes of the same person. In total, 1735 subjects (3454 eyes) were included with mean±SD age 15.4±4.6 years, T1D duration 7.1±5.3 years, T1D onset 8.3±5.4 years, and A1c 8.4±1.3; 50.7% were female, 30.7% were overweight/obese and 4.1% had elevated/high BP. Any DR was present in 8.5% and vtDR in 2.4% of eyes. Unadjusted analyses found DR presence associated with higher A1c (p<.0001), longer T1D duration (p<.0001), younger age of T1D onset (p=0.0002), older age (p<.0001), female sex (p=0.001), higher BMI (p<.0001) and elevated/high BP (p<.0001). After backwards elimination modeling, older age (p<.0001), longer T1D duration (p=0.002) and higher A1c (p=0.01) were significantly associated with DR. In unadjusted analyses, vtDR was associated with higher A1c (p<.0001), longer T1D duration (p<.0001), younger age of T1D onset (p=0.001), older age (p<.0001), female sex (p=0.009), higher BMI (p=0.009) and elevated/high BP (p<.0001). Using backwards elimination modeling, older age (p<.0001), younger age of T1D onset (p<.0001) and elevated/high BP (p=0.0007) were significantly related to vtDR. In this pediatric cohort, DR or vtDR were present in 8.5% of eyes and were associated with modifiable risk factors of hyperglycemia and elevated BP. Future longitudinal studies can assess if early intervention to improve glycemic control and BP can reduce vtDR in youth with T1D. Disclosure C. Jacoba: None. K. Sampani: None. C. Gilbert: None. P. S. Silva: Research Support; Self; Hillrom, Optomed, Optos plc. J. Keady: None. L. M. Laffel: Consultant; Self; AstraZeneca, Boehringer Ingelheim International GmbH, Dexcom, Inc., Dompe, Insulogic LLC, Janssen Pharmaceuticals, Inc., Laxmi Therapeutic Devices, LifeScan, Lilly Diabetes, Medtronic, Provention Bio, Inc. L. P. Aiello: Consultant; Self; KalVista Pharmaceuticals, Novo Nordisk, Regeneron Pharmaceuticals Inc., Stock/Shareholder; Self; KalVista Pharmaceuticals. J. Sun: Other Relationship; Self; Novo Nordisk, Roche Pharma, Research Support; Self; Adaptive Sensory Technology, Boehringer Ingelheim Pharmaceuticals, Inc., KalVista Pharmaceuticals, Optovue, Roche Pharma.
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