Type 2 diabetes complicated by dry eye syndrome: Analysis of dry eye symptoms, corneal neuropathy, and influencing factors

Figure 1 Correlation between dry eye syndrome indicators and corneal neuropathy parameters in the dry eye syndrome group (n = 27). A: Correlation between standard patient evaluation of eye dryness (SPEED) score and nerve density; B: Correlation between SPEED score and main nerve length; C: Correlation between non-invasive tear film breakup time (NIBUT) and nerve density; D: Correlation between NIBUT and main nerve length; E: Correlation between Schirmer I test (Sit) and nerve density; F: Correlation between SIt and main nerve length. DES: Dry eye syndrome; SPEED: Standard patient evaluation of eye dryness; NIBUT: Non-invasive tear film breakup time; SIt: Schirmer I test.