Association Between Oral Hygiene and Macular Degeneration?

 This paper suggests a link between oral hygiene and macular degeneration. 

Alzheimer Therapy May Reduce AMD Risk

 This study suggests that the use of acetylcholinesterase inhibitors, used to improve the quality of life in Alzheimer's patients, may reduce the incidence of age-related macular degeneration in patients with Alzheimer’s by 6%.   Randomized clinical trials would be necessary to truly evaluate any cause-and-effect relationship.