Some interesting links have emerged between the mouth and the eye. A recent article in the Retina journal found that periodontal disease (advanced gingivitis) was associated with a doubling of risk of macular degeneration under age 60.  Last year, PLoS One reported that glaucoma was associated with a high bacterial load in the mouth.   And of course, Sjogren's syndrome causes dry eye and dry mouth.  So to all who are interesed in protecting your vision, do see the dentist, watch what you eat, and take care of your mouth!