Ophthalmologic Microscope OCT Distance Measurement

The patent replaces conventional mechanical distance measurement methods with an Optical Coherence Tomography (OCT) measuring device that uses optical interference principles. The OCT device emits coherent light that reflects off the patient's eye and returns to the sensor, with the optical path length determining interference patterns that precisely indicate distance. This substitution of mechanical measurement with optical measurement achieves micrometer-level position determination accuracy while maintaining reasonable system complexity through integration.

The patent implements a feedback mechanism where the OCT measuring device continuously monitors the position of the ophthalmoscopic magnifier relative to the patient's eye. The control unit receives position information from the OCT device and automatically adjusts the magnifier's position to maintain optimal viewing conditions. This closed-loop feedback system ensures that the magnifier is positioned close enough to provide detailed viewing while automatically preventing it from moving into a position that would shade the ocular fundus, thus resolving the contradiction between viewing detail and avoiding shading.

The patent implements self-service functionality where the OCT measuring device automatically measures the distance between the surgical microscope and the patient's eye, and the control unit automatically adjusts the work distance to the optimal value. The system performs automatic centering of the ophthalmoscopic magnifier by continuously monitoring position through OCT and making real-time adjustments without requiring manual intervention. This automation eliminates the need for manual adjustment while maintaining ease of operation through automatic control, achieving high positioning accuracy without sacrificing operational simplicity.