Have your local health department or a lab test your water for bacteria, and If your Report shows a P next to either E.coli or Coliform Bacteria, that means there is the Presence of Bacteria & NO amount of this Bacteria is acceptable so the water MUST be treated to kill the bacteria to make it potable!
Optometrists also test for glaucoma and other eye diseases, and diagnose conditions caused by systemic diseases, such as diabetes and high blood pressure, referring patients to other health practitioners, as needed.
An optometrist can perform eye exams to determine vision problems, and also diagnose diseases and abnormal conditions in the eye. Among the conditions that optometrists typically test for are glaucoma, color perception, depth perception, and the ability to focus and coordinate the eyes.