An instrument stand for supporting ophthalmological instruments. The instrument stand may include a console housing configured to receive differently-configured electronics modules. In addition to, or instead of, the interchangeable electronics modules, the console housing may also be provided with a removable shelf that is resistant to unintentional removal during use. In addition to, or instead of, the interchangeable electronics modules and removable shelf, the instrument stand may also include a support arm having a cutout on different surfaces so that a panel carrying electrical inserts may be positioned in the cutout on one of the surfaces, while covering the unused cutout on the other surface with a blank panel.

The apparatus provides an improved modified slit lamp assembly light source base and vertical support frame assemblies comprising chin and headrest vertical support legs wherein at least a lower portion of the chin rest vertical supports have been modified in at least a substantially widened fashion. The lower portion of the supports is further modified to jut back or bend away from a seated patient and toward the encroaching base of the slit lamp assembly to provide upper body accommodation while at the same time preventing a patient's upper body to encroach the base of the slit lamp. The assembly's chin/head support frame is mounted on a pivotal tabletop having a pivotal connection means, wherein the pivotal tabletop comprises a plurality of cut-out shapes each working in cooperative conjunction with the modified assemblies to accommodate obese, large-breasted patients and patients with degenerative back disorders, as well as obese doctors.

A motorized head supporting and positioning apparatus is disclosed, such as is useful for eye examination or treatment. The apparatus includes head-receiving supports, which can include a forehead rest and a chinrest, which can be linked by a single arm assembly. A main assembly of the apparatus contains a motor assembly, which can include three motors driven in a coupled manner to guide a head along a three-dimensional path at a speed that is comfortable to the patient. The apparatus can be relatively compact, owing at least in part to a pivoted approximate Z-axis movement along the optical axis. In addition to open-loop operation, the apparatus can be used with a tracking subsystem to achieve closed-loop positioning in real time, as well as to enable the activation of an examination/treatment instrument when the eye is brought within an acceptable tolerance of a desired position.