It would seem that for some classes of products, person-on-the-street type of advertising might be just as effective if not more so than those that use celebrities.A cross-section taken along a vertical axis reveals an arcuate configuration through the lens having a radius designated R.Subjects in the group with spectacles showed significantly less development of sclerotic nuclear lens changes.In the drawings, the letter A indicates gen erally a pair of spectacles, these spectacles being provided with lenses whose principal portions are indicated at I and .A further object of the invention is to provide a drag member for eyeglass temples, which may be adjusted on and fitted to any type of temples, to retain the same in the proper adjusted position.A miniature opto-electronic display panel is driven by micro electronics to generate bright luminous display images, providing useful displays such as time of day or even television images.The panes a and b and bridge are formed to have cylindrical conformation such that their curvatures conform very well to the natural curvature of the wearer's face, i.This can be harmful if the lens does not offer good UV protection or if UV radiation reaches the eye from the sides of the lens.per cent of the incident UVR passed through to the eyes.