The primary aim of spectacles is to help enhance a person's vision and aid the correction of visual impairments, if any, though the recent times have seen a swelling list of its functions. To this end, corrective lenses are used. These lenses come with different specifications corresponding to individuals requirements. Read More

A convex lens is a converging lens which works much like a concave mirror. This kind of lens is thicker in the middle and thinner towards the edges, like the lens in a magnifying glass. The image is changed by the position of the object in relation to the focal length and the radius of curvature. Read More