Most optometrist recommend having your eyes tested yearly or every other year. If you are having problems with your eyes such as frequent headaches, blurred vision, or spots in eyes, you should contact your doctor.
once a month
10 years
at least annually
every 12-18 months
GFCI outlets should be tested monthly to ensure they are working properly. This can be done by pressing the "Test" and then "Reset" buttons on the outlet. If the GFCI does not trip when tested, it may need to be replaced.
Once every 6-8 months.
No animal should ever be tested on
yes, they should be tested
people put the products in their moulths and eyes
You local Governement Aviation Authority should have the standard required
It is reccomended that adults have their eyes examined every year.