REN and Schnyder corneal dystrophy: Second, we do not necessarily have an exhaustive range of adjusted confounding factors, allowing for possible confounders that may have an impact on the association of NLR with SCD, such as renal function markers including albumin/creatinine ratio (ACR), well-established risk markers for SCD, including left ventricular ejection fraction, NT-proBNP, and troponin levels and medications, such as statins, renin-angiotensin-aldosterone system (RAAS) inhibitors, and antidiabetic therapies.