Spectacles are made up of lenses and are used to improve vision. For nearsightedness, concave lenses are used and for farsightedness convex lenses are used to give clear images. A microscope is an instrument which gives enlarged view of small objects. In an optical microscope, the objective makes a real image of the object which is further magnified by the eyepiece for the eye to see a magnified virtual image. The distance at which the magnified virtual image is formed can be adjusted by moving the eyepiece to suit the power of the spectacles one uses. So, one need not use spectacles while using a microscope in order to see the magnified image clearly. Besides, wearing spectacles also draws the eye of the observer away from the eyepiece thus reducing the field of view.
