CST3 and Hypertension: This study aimed to assess standard kidney injury markers (creatinine, urea, uric acid, cystatin C, 24-h microalbuminuria), as well as potential ophthalmological changes using optical coherence tomography (OCT) and optical coherence tomography angiography (OCT-A) in the early course of newly diagnosed hypertension in children and adolescents.<h4>Methods</h4>The study group consisted of 56 children and adolescents with newly diagnosed hypertension who had not received antihypertensive treatment prior to the study.