System for imaging an ocular fundus semi-automatically at high resolution and wide field
March 31, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3914032 Eye-fundus camera easy for alignment of pupil Optical instrument for examining the eye fundus Ophthalmoscopic optical system Method and device for detecting distance between eye-examining instrument and eye Method and apparatus for examining and photographing the ocular fundus Eye fundus observing optical system Ophthalmological instrument Eye fundus camera Eye fundus observing and photographing optical system InventorAssigneeApplicationNo. 052117 filed on 03/31/1998US Classes:351/221Including illuminatorExaminersPrimary: Manuel, GeorgeAttorney, Agent or FirmInternational ClassA61B 003/00AbstractA system for obtaining images of the fundus of an eye includes an illumination device which directs a light beam onto a portion of the fundus of the eye, and a video camera which records the portion of the light reflected from the fundus of the eye. The pupil of the eye is automatically centered and brought into focus, and the fundus of the eye is then automatically brought into focus. A plurality of target images are presented at different locations in space so that the eye will move when focusing on these different locations. As the eye moves, different areas of the fundus are illuminated, and images of these different areas of the fundus are recorded by the video camera. The plurality of images from the different areas of the fundus are then automatically arranged by a computer in a mosaic image representative of a section of the fundus including the plurality of areas. Data representative of the mosaic image is transmitted to a remote site for analysis. Additionally, the system can perform visual acuity and perimetry testing on the eye whose fundus is being imaged.Other References
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