Below are the main rubriks (i.e strongest indications or symptoms) of Causticum in traditional homeopathic usage, not approved by the FDA.
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Pain in the eyes, as if the eyeball were dilating.
Aching in the eyes, as if from sand, sometimes aggravated by the touch.
Itching, smarting, and burning pair, in the eyes.
Inflammation of the eyes, with burning and itching of the eyes and eyelids.
Ulceration of the eyes.
Difficulty in opening the eyes, with a sensation as if the eyelids were swollen.
Visible quivering of the eyelids.
Obscuration of the eyes, often sudden, and sometimes as if the eyes were covered by a skin.
Sight confused, as if a gauze or mist were before it.
Ophthalmia where there is opacity of the cornea which has spread over the pupil.
Movements before the eyes, as of a swarm of insects.
Dark nets, which seem to dance before the eyes.
Lights and sparks before the eyes.
Warts of old-standing in the eyebrows; on the upper eyelid (and nose).≡ more ...