Category: O

  • Olfactory striae

    Three bands of fibers (lateral, intermediate, and medial) that form the roots of the olfactory tract.  

  • Orthopedic stretcher

    A metal stretcher that is hinged along its long axis and designed to be split so that it can be placed on both sides of the patient and then reassembled to lift the patient.  

  • Optic stalk

    The structure that connects the optic vesicle or cup to the forebrain.  

  • Opponens splint

    A splint designed to maintain the thumb in a position to oppose the other fingers.  

  • Occlusal splint

    A device fashioned to cover the incisal and occlusal surfaces of a dental arch to stabilize the teeth, treat bruxism, or facilitate proper occlusal positioning.  

  • Ophthalmic sonographer

    An individual professionally trained to perform diagnostic evaluations of the eye and its diseases, including examinations for ophthalmic foreign bodies, tumors, radiation injuries, inflammatory diseases, and vascular lesions as well as measurements of axial length (e.g., in cataract surgeries and intraocular lens implantation). In the U.S., professionally trained ophthalmic sonographers are certified in their specialty…

  • Ophthalmic solution

    A sterile preparation suitable for instillation in the eye.  

  • Open sling

    A sling made by placing the point of a triangular cloth at the tip of the elbow. The ends are brought around at the back of the neck and tied. The point should be brought forward and pinned or tied in a single knot, forming a cup to prevent the elbow from slipping out.  

  • Objective sign

    In physical diagnosis, a sign that can be seen, heard, measured, or felt by the diagnostician. Finding of such sign(s) can be used to confirm or deny the diagnostician’s impressions of the disease suspected of being present.  

  • Orbital septum

    A fibrous sheet extending partially across the anterior opening of the orbit within the eyelids. The front edge of the eye socket is encompassed by a thin, sheet-like membrane, serving as a barrier within the eye.