It is estimated (by Pro Ro Nata, Inc., a consulting firm) that traditional Chinese medicine products for eye disorders accounted for 41 million dollars (U.S.) of business in 2002, with 80% sold over the counter in pharmacies, the rest prescribed at hospitals and clinics. Cataracts are a major target of therapy, with 40% of the ophthalmic drug market (including non-TCM therapies). Unfortunately, little is known about the success rate for these treatments. Both internal and topical therapies are used.
Image by Аружан Жамбулатова. Image sourced from Wikimedia Commons. Available here.