Tear drop analysis offers a window into diseases of body: Review helps researchers i nd biomarkers, reasons, cause, treatment options.

Autoimmune disease diagnosis; Breast tumor diagnosis; Metabolic disorder diagnosis; Diagnosis of neurological disorders; Autophagy; Biomarkers; Chemokines; Cytokines; Eye diseases; Eye examination; Inflammation; Ophthalmologists; Prostate tumors; Risk assessment; Surgical complications; Tears (Body fluid); United States. Food & Drug Administration; Decision making in clinical medicine; Oxidative stress; Psychology of Research personnel; Disease progression; Matrix metalloproteinases; Disease risk factors

The article discusses the potential of tear drop analysis in finding biomarkers and reasons of, and treatment options for ocular, metabolic, and autoimmune diseases in 2019. Topics covered include the observed epithelium inflammation and tears of keratoconus patients which led to tear profiling, and differences in various factors in the tears that eventually become biomarkers. Also noted is the causation of disease by oxidative stress via autophagy in the corneal epithelium of such patients.