Glaucoma

Glaucoma builds pressure in the eye, and is read through the eyes as how one sees one's life. One tradition reads it as a disease of growing sadness: as grief mounts and is not released, it is read as raising the eye's inner pressure, with years of headaches belonging to the same lengthening chain of sadness before the glaucoma is found. Alongside runs an accumulation of anger-provoking things one has had to keep looking at, until the eye, in effect, helps one not see what enrages or grieves one. The short explanation's "so much anger one has had to look at that the eye begins to shut its own sight down" names that; the deeper root is mounting, unreleased sadness. Relief is described as letting the sadness and anger be released rather than stored, so the eye need not dim its own sight to escape them.

(Note: this is a metaphysical interpretation; glaucoma is a serious eye condition requiring medical care to protect sight.)

Example from the findings: glaucoma is read as growing, unreleased sadness raising the eye's pressure, the eye dimming its sight to stop seeing what grieves or enrages.