A lid speculum apparatus is described. The speculum operates in an anatomically correct manner to provide full exposure of the eye during pterygium surgery. The speculum has a first blade and a second blade of the same size that are long enough to support the entire longitude of the upper and lower lids. With such an arrangement, the blades will provide full exposure of the globe including the nasal and temporal areas. The speculum is configured to open and close with a screw-based mechanism, and is designed to remain in position without adjustment during use. The blades are preferably curved to provide less pressure points than conventional straight blades.
