IL6 and Insulin resistance: In addition, metabolic parameters such as insulin, triglyceride, Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), low-density lipoprotein (LDL), interleukin 6 (IL-6), and leptin have also been found to be negatively related to RNFL thickness (37, 41, 42, 45, 46, 48) (Table 3).