发明名称 |
VIRTUAL REALITY PERIPHERAL VISION SCOTOMA SCREENING |
摘要 |
The invention utilizes a virtual reality display (14) to present a random noise stimulus to a patient. Using an input device (16) a patient indicates the location of disturbances in the random noise display. In a preferred embodiment, a scanning retinal laser projects the random noise stimulus directly onto a patient's eye(s). The image is preferably presented at virtual infinity and can be imaged over the peripheral retina. A patient is directed to centrally fixate on the random noise display. A visual aid, such as a cross hair, may be included in the generated display to facilitate this focus. With a scanning laser virtual reality device having a narrow exit, the failure of a patient to centrally fixate causes the image presented to be distorted, incomplete or disappear from view. While a patient views the random noise display, the patient is directed to indicate any areas of disturbance using an input device. A preferred input device is a computer pen (22) and tablet (20). This is easy to use while also viewing the random noise display. Preferably, the display changes when a patient uses the pen and tablet such that the patient sees the location being indicated either in place of or superimposed upon the random noise display.
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申请公布号 |
WO0205704(A1) |
申请公布日期 |
2002.01.24 |
申请号 |
WO2001US22126 |
申请日期 |
2001.07.13 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
PLUMMER, DANIEL, J.;BARTSCH, DIRK-UWE, G.;FREEMAN, WILLIAM, R. |
分类号 |
A61B3/024;(IPC1-7):A61B3/02 |
主分类号 |
A61B3/024 |
代理机构 |
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