doors 30 face a pit 32 and storage area 33 extending behind the examining rooms 24 storage or work area 33 can be used to store auxiliary equipment such as a keratometer photocoagulator a b scanner and the like in the case of an ophthalmic clinic a transfer cart 34 is guided within pit 32 for movement along the examining rooms 24 the cart 34 includes a rolling chair 36 for the doctor and primary medical equipment 38 for example equipment 38 can comprise a slit lamp goldmann perimeter lensometer trial set projectoscope and other ophthalmic instruments for examining the eyes of a patient and determining the correction necessary if any dental equipment for performing intraoral procedures on the teeth of a patient radiation equipment or any other type of specialized devices desired to be utilized more efficiently it will thus be appreciated that transfer cart 34 carries the doctor as well as equipment 38 further details of transfer cart 34 are shown in fig2 and 3 car 34 includes a base 37 which is supported for movement within pit 32 by wheels 39 the top surface of base 37 is substantially even with the floor of work area 33 so that auxiliary equipment can be wheeled onto cart 34 as necessary one pair of wheels 39 is driven through half shafts 40 by a motor brake unit 42 which is controlled by suitable controls provided for manipulation on cart 34 upstanding walls 44 and 46 are mounted on opposite ends of base 37 and are interconnected by an open frame 48 the central area of cart 34 is thus substantially open except for rolling chair 36 so that a patient in an examining room 24 can look through the cart at a chart projected on the wall 33a.