Sorbinil is primarily used in the treatment of diabetic complications, particularly diabetic neuropathy. It works by inhibiting the enzyme aldose reductase, which plays a key role in converting glucose to sorbitol in conditions of high blood sugar. By blocking this pathway, Sorbinil helps reduce the accumulation of sorbitol in nerve cells, thereby alleviating symptoms like pain, numbness, and tingling associated with diabetic neuropathy. Additionally, it has been explored for its potential in preventing or delaying the onset of cataracts, another common complication of diabetes, by reducing sorbitol buildup in the lens of the eye. Its application is significant in improving the quality of life for diabetic patients by addressing these chronic complications.