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:)
It is estimated that up to 1 million of the countryâs 11 million people need glasses, says Chen. Most of those with sight difficulties will need standard reading glasses while between 5% and 10% will be able to get the Vision for a Nation adjustable lenses. Chen, who says that vision issues have a low priority in the developing world, hopes to expand the project to Bhutan in the future.