Patanjali drishti is a bad product. Harmfull for eyes.
Its a ayurvedic eye drop. In my opinion it very harmfull I use it when first time. My eyes are red for three days. Chemical of this eyedrop is very had. U feel jalan in ur eyes for more than three days. Ur eyes are red and u r not able to see anything properly for three days. For using this please consult a very experienced eye doctor. Otherwise u feel pain in ur eyes.