Abstract
The present study aims to assess the relationship between serum lipid parameters and retinal microvascular calibres in children and adolescents. A total of 950 participants aged 7 to 19 years were recruited. Central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE) were measured from digital retinal images. Serological testing was performed to obtain lipid profiles. Dyslipidaemia was defined according to the US national expert panel guideline. After adjusted for age, sex, mean arterial blood pressure, axial length, body mass index and the fellow retinal vascular calibre, no significant association was found between retinal vascular diameters and any lipid parameters (all P > 0.05) in children younger than 12 years. Among the adolescents 12 years and older, increased triglycerides, total cholesterol, low-density lipoprotein cholesterol, and apoB were associated with decrease in CRAE (β = −1.33, −1.83, −1.92 and −7.18, P = 0.031, 0.003, 0.006, and 0.009, respectively). Compared with normolipidemic counterparts, adolescents with dyslipidaemia had significantly narrower retinal arteriolar diameters. No significant relationship between lipid subclass levels and CRVE was revealed in adolescents. The present findings suggest that the elevation of atherogenic lipids in adolescents is closely related to the adverse changes of retinal arterioles. Dyslipidaemia may affect systemic microvasculature from childhood on.
Highlights
Indicating an improvement of microcirculation perfusion[13]
In the younger age group (7–11 y, Table 2), no significant association was found between serum lipid measures and retinal vascular calibres after adjusting age, sex, axial length, Body mass index (BMI), Mean arterial blood pressure (MABP) and the fellow vascular diameter (i.e., CRVE for central retinal arteriolar equivalent (CRAE) outcomes and vice versa)
For individuals older than 12 years old, abnormalities in TG, total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and apoB were all significantly associated with narrowing of arteriolar diameter (Ptrend = 0.016, 0.042, 0.033 and 0.002, respectively) after adjusting for age, sex, axial length, BMI, MABP and CRVE
Summary
Indicating an improvement of microcirculation perfusion[13]. Despite the sporadic but inconsistent results in adults, no literature exists reporting the association between lipid profiles and retinal vascular calibre in children and adolescents. In the younger age group (7–11 y, Table 2), no significant association was found between serum lipid measures and retinal vascular calibres (all P > 0.05) after adjusting age, sex, axial length, BMI, MABP and the fellow vascular diameter (i.e., CRVE for CRAE outcomes and vice versa).
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