Lighted speculum devices comprising a dilation means and an integral light source are provided. The light source may be directional, such that light is emitted through the distal end of the dilation means, and/or diffuse, such that light emits both through the distal end of the dilation means and the walls thereof. The lighted speculum is also coupled with a power source and a switching mechanism, all of which is configured to be operable using one hand. Methods for dilating and visualizing a body cavity are also provided, as well as kits to facilitate the commercial use of the presently disclosed lighted speculum.
