Night Blindness: Here the patient cannot see during night though the eyes are hale and healthy and the vision is not at all affected during the day time. A simple, useful procedure advised in this condition is as follows: Take the leaves of neem, pound them in any clean and good resin (e.g. resin from the pine tree) and then grind them together to a fine degree spraying water throughout. Remove the water from this mass afterwards by squeezing it with the help of a clean piece of cloth.
Apply this at the eyes once or twice with the help of a collyrium needle.
“Whiteness” of the Eye: Take the flowers of neem in the required quantity. Dry them in shade. Grind them when fully dried with an equal quantity of Kalmi shora (an alkali or kshra prepared from the plant kalmi or Ipomea aquatica Forsk) into very fine powder and store this product in a bottle.
Apply this during the night by means of collyrium needle two to three times. Effect of this measure can be seen even after about four to five days.
This procedure is seen to be effective even in general haziness of the eyes (dhund in Hindi).
Pain in the Eye: This refers to any persistent pain in the eye. The following remedy is advised when the eye is paining excessively in this way and the patient is restless. Take some leaves of neem, sprinkle them with a little water, grind and extract the juice from them on a clean grind stone.
Drop this fluid after warming it slightly in a small quantity in that ear which is opposite to the eye that is troubling. Soon there will be relief and a complete freedom from the distress will ensue after just a few applications in this manner.
There are many collyriums for the eye prepared with neem and advised in several afflictions of the eye; some of these are advised even for cataract conditions.