Iridology (Diagnosing Health Issues Using The Eye's Iris)

[EnolaGaia]

Iridology (also known as iridodiagnosis or iridiagnosis) is an alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's systemic health. ...

Well-controlled scientific evaluation of iridology has shown entirely negative results, with all rigorous double blind tests failing to find any statistical significance to its claims.

https://en.wikipedia.org/wiki/Iridology

 

[EnolaGaia]

One of the hallmarks of damned science / pseudoscience is the application of seemingly detailed models or frameworks for whatever is being addressed. Here's a representative illustration of an iridology chart, with distinct details for which body or health components are linked with regions of the left and right eyes.

 

[EnolaGaia]

A related line of work from Sweden uses iris features to evaluate personalities rather than health issues:

https://forums.forteana.org/index.php?threads/how-the-eyes-irises-reveal-personalities.29129/