An improved speculum.
Spreading the lids for intraocular surgery is a mechanical act. Theoretically there are five mechanical directions of movement, four of which are clinically relevant to lid separation. This speculum provides adjustment of all four dimensions.
D005143:Eyelids; D006801:Humans; D013508:Ophthalmologic Surgical Procedures; D013525:Surgical Instruments / Q000592:standards*