DEVICE FOR TESTING CORNEA AND SCLERUS OF AN EYE Russian patent published in 1994 - IPC

FIELD: medical engineering. SUBSTANCE: device has plunger 8 provided with rod 7, voltage measuring mechanism connected with the plunger and made in form of two interlocked circuits. Pressure measuring control unit has permanent magnet 1 mounted inside hole of electromagnetic coil 4 which is installed onto frame 5. Coil 4 is connected with power voltage generator 17 and with pressure registrar 18 through the first analog-to-digital converter 18. Plunger movement measuring circuit has reflector 9 rigidly connected with rod 7 through frame of electromagnetic coil 4. Reflector 9 is optically mounted between LED 10, connected with reference voltage generator 19, and photodiode 11, connected with photocurrent amplifier 13, amplitude detector 14, the second analog-to-digital converter 15 and plunger movement registrar 20, units 13-15 and 20 are connected in series. Permanent magnet in pressure measuring control unit is added with magnetic circuit 2 which has space for placing electromagnetic coil 4 to be rigidly connected with rod through the frame. The frame is mounted in suspensions for linear movement. EFFECT: improved accuracy of initial adjustment of plunger to eye surface. 2 cl, 1 dwg