This is an herbal remedy for cataracts: Bayberry Bark, Eyebright Herb, Golden Seal Root, Red Raspberry Leaves and Cayenne. I liked Wrenn's fennel seed eyewash as well. If you don't have access to all of these herbs to make an eyewash then you might try Herbal Eyebright: http://www.herbsfirst.com/discriptions/eyebrit.html
If you get the herbal remedy and want to still do the fennel seed wash for your loved one, add 1-2 tablespoons fennel seed herb to about 48 ounces water bring to a boil and turn off heat. Wash out your babies eyes regualrly and hope for great results. If you don't see improvement from the herbal bright then you might try the fennel seed eyewash.
Herbs are not drugs, so if you want instant gratification, I don't think this solution will work for you.
I hope this helped. If it does, let us know; if it doesn't, let us know.