A new device for noncontact wide-angle viewing of the fundus during vitrectomy
E. H. Bovey and M. Gonvers
Hopital Ophtalmique Jules Gonin, Lausanne, Switzerland.
Noncontact wide-angle viewing of the fundus during vitrectomy has
heretofore relied on an image inverter and a 90-diopter lens fixed with a
tube under the microscope. A new device in which the 90-diopter lens is not
connected to the microscope but, rather, is connected to an independent
support system is described. This device offers many advantages: (1)
focusing on the various parts of the eye during vitreous surgery need not
be done manually but is achieved by the up or down movement of the
microscope, (2) translation of the microscope is easier during tilting of
the eye, (3) a lateral slit-lamp can be easily added for illumination of
the fundus, and (4) there is no risk that the 90-diopter lens will touch
the cornea.
