Abstract: A patient support frame for use on an operating table during posterior lumbar laminectomy surgery comprises a frame for attachment to said table and a pair of iliac crest supports slidably mounted on said frame. The iliac crest supports are adjustable to engage the iliacs, or hipbones, of the patient whereby the prone patient is supported so that the abdomen does not touch the table and is substantially without pressure thereon.

Abstract: A visual examination apparatus for administering a photostress recovery test. The photo pigments of the cones of the subject eye are conditioned to a steady state by exposure to a dim light which retro-illuminates an optotype. The size of the optotype is related to the visual acuity of the subject eye. A bright light source of repeatable duration and intensity and spectral distribution of energy is directed to bleach the photo pigments of the cones of the macula. A common switch triggers the flash and starts a digital timer. After the flash, a different optotype of the same size as the initial one is substituted therefor. When the subject eye recovers from the dazzling flash sufficiently to detect the different optotype, the timer is stopped. The length of time required for the cones of the macula to regenerate photo pigment is dependent upon whether the cones are normal and on their apposition to the retinal pigment epithelium.

Abstract: A one-piece, neck-encircling long necktie having a know form and snap means comprising a single piece of synthetic perma-press, one-way stretchable fabric having a single seam centered in the backside of the tie and having its ends formed from three-layer folds to provide a semi-pointed shape and including a knot form positioned approximately midway in said tie comprising a molded, flexible single member having an upper flap with a longitudinal groove therein separated from a mid-portion by a fold line of reduced thickness, a middle portion extends downwardly and outwardly from said fold line to a transverse groove, and a lower part portion extending downwardly from said transverse groove and holes for attaching snap means therein and a lower rounded edge.