According to a 2016 Harvard University study, the combination of folate and vitamin B12 also seems to slow down the progress of macular degeneration, an aging related eye disease characterized by progressive vision loss.

Compared with other commonly used supplements for the treatment of macular degeneration, including thiamine (vitamin B1) and riboflavin (vitamin B2), high-dose folic acid is the most effective in slowing down the progress of the disease.
Magnafolate® L-Methylfolate—maximizes the supplementation delivering a "finished" folate the body can immediately use without any kind of metabolization.
It can better supplement the folic acid that the body lacks.
Jinkang Pharma ,the Manufacturer & Supplier of L-Methylfolate.