2023.1.22: news.health/diet/blindness/amd/metformin:
. if your blood sugar is borderline high,
then you might be a candidate for taking metformin;
that drug is now known to reduce the risk of blindness
by inhibiting retina death (geographic atrophy)
and by inhibiting intraocular neovascularization (wet AMD).
Int J Ophthalmol. 2021 Aug:
https://pubmed.ncbi.nlm.nih.gov/34414094/
Newly-found functions of metformin
for the prevention and treatment of age-related macular degeneration;
Kuan-Rong Dang, Tong Wu, Yan-Nian Hui, Hong-Jun Du.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8342286/