Chronic Dry Eye Post-LASIK: Ocular Surface, Cytokine, and Neuropeptide Profiles Under Investigation

Dry eye disease (DED) is a complex, multifactorial ocular surface disorder characterized by tear film instability, inflammation, and neurosensory dysfunction. While FS-LASIK is a common refractive surgery, a significant complication is the development of chronic dry eye, which can severely impact patient quality of life. Current understanding often focuses on general ocular surface damage, but there's a critical gap in comprehensively comparing DED patients post-LASIK, particularly distinguishing those with and without chronic ocular pain, and linking these to specific cytokine and neuropeptide profiles. This study aims to address this gap by exploring the underlying pathogenesis.

This observational study was designed to investigate the clinical characteristics of patients developing chronic dry eye after FS-LASIK. Researchers planned to comprehensively observe and compare ocular surface characteristics, cytokine profiles, and clinical features in DED patients who had undergone FS-LASIK. A key aspect of the design involved comparing these parameters, along with tear neuropeptide concentrations, between two distinct groups: DED patients with chronic ocular pain following FS-LASIK and those without. The study's primary objective was to elucidate the pathogenesis of chronic dry eyes post-LASIK by identifying correlations between ocular pain, clinical characteristics, and tear neuropeptide levels.