Something that causes a response in a body part or organism. A stimulus may be internal or external. Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch.
Just curious...given my insurance plan I can get a new pair of frames and lenses once every 2 years, but I realllly love glasses so I tend to purchase about 2 pair per year...Gotta have my style...oh and of course the added benefit of sight is a nice plus:)
How To Get an Unbelievable, Amazing, Fantastic, Thrilling Deal on New Glasses. Buy them online. By Farhad Manjoo. A few months ago, I visited the optometrist for an eye exam, and, as usual, the doctor found that I'd grown still-more nearsighted and needed a new pair of glasses.