The Gayatri Ramayana is available in many languages and it comprises of 24 Verses from the original Ramayana, composed by the great Sage Maharishi Valmiki. Each of these 24 Slokas commences with a letter from the Gayatri Mantra, which comprises of 24 letters with each letter having a much deeper meaning or multiple deeper meanings.
Coming back to this healing remedy, it has to be performed on four consecutive Full Moon Days [ Purnima]. On this day the practitioner should take a bath, wear clean and washed cloths and light a Sarson Ke Tel Ka Diya [Mustard Oil Lamp] and then chant Gayatri Ramayana.
After this, he should hold a clean and washed stainless steel utensil like a spoon over the Oil Lamp and collect the soot, which emits from the lamp. Then he should prepare Kajal [eye-liner] from the collected soot by mixing it with pure unadulterated Cow Ghee.
This Kajal should then be infused with the Gayatri Mantra, by chanting the Gayatri Mantra 2,400 times. Then he should apply this Gayatri Mantra Infused Kajal in the eyes of the person suffering from eye-defects or himself, if he is the one who has eye related problems.
Note- I am not in a position to certify the success or failure of this Gayatri Mantra vision healing remedy. As this remedy is connected to the eyes, which are the most sensitive and critical body parts, kindly perform this remedy with extreme care and caution.