Chronic Total Occlusion (CTO) represents one of the most advanced manifestations of coronary artery disease (CAD) and is characterized by complete arterial blockage lasting more than three months. Percutaneous Coronary Intervention (PCI) for CTO has historically been associated with low success rates and higher complication risks, limiting its widespread adoption. Recent advancements such as hybrid antegrade-retrograde approaches, improved guidewires, and intravascular imaging have significantly improved procedural success and clinical outcomes. This study evaluates clinical, procedural, and long-term outcomes of PCI in CTO patients compared to conventional non-CTO PCI cases, focusing on mortality, myocardial infarction rates, left ventricular function, and symptom improvement. Results show that successful CTO PCI leads to substantial improvement in ventricular function, reduced angina, and lower hospitalization rates, although procedural complications remain higher than standard PCI.