Abstract: Optical loupes comprise a frame supporting two optical devices, each of which has an ocular and an objective. The frame has side arms or stems and a bridge for enabling the frame to be worn like a pair of spectacles, whereby the optical devices are located immediately in front of the eyes of the viewer. The ocular and the objective each have an optical axis. The optical axis of the ocular and the optical axis of the objective intersect at an angle of about 135.degree., and a Schmidt prism redirects light from the objective to the ocular in each case. A light source is provided on the frame between the optical devices and provides a gradually diverging light beam to illuminate an object being reviewed. The optical axes of the respective objectives converge at the object being reviewed. The loupes allow the user to observe at a level below his or her normal line of sight while maintaining the head in an upright position.

Abstract: A microsurgical instrument comprising a generally cylindrical handpiece (10) split longitudinally to provide two semi-cylindrical parts (12, 13) which are pivotally mounted at a first end thereof, to a central support member (14), for symmetrical pivotal movement at a second end towards and away from each other. A spring (26) biases the parts (12, 13) away from each other. A spindle (11) extends beyond the second end, comprising a pair co-axial shafts (16, 17) which are connected at the first end with respective levers (23, 24) to respective handpiece parts (12, 13) and at the second end to a functional tip of scissor, forceps, or the like, each jaw member of such a tip being connected to only one of the co-axial shafts (16, 17). Squeezing of the handpiece parts (12, 13) together causes simultaneous and symmetrical rotation of the co-axial shafts (16, 17) in opposite directions whereby the jaws of the functional tips are activated symmetrically and in unison.

Abstract: A cutter to remove corneas from eyes which includes a body adapted to be placed and held on an eye and which has a rotatable carriage including a contact lens which rests against the surface of the cornea to restrict movement thereof and which has associated therewith a knife, the depth of cut of which is adjustable so that on a combination of rotation of the carriage and adjustment of depth of cut the cornea can be removed, the removed cornea having a truncated conical outer surface. The specification also describes a surgical method of removing and replacing corneas in eyes.

Abstract: This invention relates to a securing device specifically having application in correcting certain forms of physical deformity and in other surgical techniques. The device includes a screw threaded component and a releasable clamping member carried by the component for releasably securing an elongated member to said component.

Abstract: A magnifier and miniature ophthalmoscope which may be worn over the eyes of a surgeon and which permits use without removal from the head as either an ophthalmoscope or as a magnifier. A first optical path of the instrument includes a magnifying objective and an eyepiece. A second optical path which can be introduced includes a first silvered mirror directed toward the center of the instrument and a second silvered mirror on the instrument center line and an objective so that each eye of the wearer examines a narrow field at about the center line of the instrument. A change means in the form of a carriage carrying the eyepiece of the magnifier and the first mirror may be moved to select the instrument function.This invention relates to an improved operating magnifier and miniature ophthalmoscope.