Below are the main rubriks (i.e strongest indications or symptoms) of Natrum Sulphuricum in traditional homeopathic usage, not approved by the FDA.
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Heaviness of eyelids, as if weights were on them.
Itching on edges of lids mornings.
Aching in eyes, esp. in evening, when reading by candle-light.
Tearing pain round eye.
Burning in eyes, sometimes morning and evening, with great dryness, or profuse lachrymation (with discharge of burning water, with dimness of sight).
Dimness of sight, from weakness of eyes.
Burning in r. eye, agg. near fire; burning of edges of eyelids.
Nocturnal agglutination of lids.
Sparks before eyes, after blowing nose.
Photophobia, esp. on waking in morning.≡ more ...