- Eserine, the alkaloid of phy sostigma, is best known as used by oculists to procure contraction of the pupils in glaucoma.
- Esin, contracts the pupils dilated by atropine, but not those by Gels.
- It slows the action of the heart and increases arterial tension.
- Ciliary spasm and spasmodic astigmatism due to irregular action of ciliary muscles.
- Blepharospasms with pupils contracted.
- Twitching of lids, soreness of eyeballs.
- Blurred vision after using eyes.
- Pains around eyes and head