| 摘要 |
This invention relates to a method for providing markers for evaluating and/or practising the visual field recognizable by an eye, and/or eyes, and/or visual system of a person. The method relies on the reporting of the person of identifications of fixation objects only identifiable when the eye or eyes of the person are accurately fixated on the fixation object. Accordingly active monitoring of a saccade, if a saccade triggering stimulus is employed; or smooth pursuit, if smooth pursuit triggering stimulus is employed, of the eye of the person is not needed for determining whereto to eye or eyes are fixated. The present invention also relates to the use of a system employing the method of the invention. The present invention further relates to a system for the method of the invention and a software product for the system. |
| 主权项 |
1. A method for providing markers for evaluating and/or practicing the visual field recognizable by an eye, and/or eyes, and/or visual system of a person, wherein said method comprises evaluating
the ability of the peripheral visual field to detect a saccade triggering stimulus STS at a specific location of the visual field of said eye or eyes of said person, the ability of the eye or eyes of a person to accurately hit a target by executing a saccade triggered by a saccade triggering stimulus STS at a specific location of the visual field of said eye or eyes of said person, and/or the accuracy of smooth pursuit of the eye or eyes of a person, said smooth pursuit being triggered by a smooth pursuit triggering stimulus SPTS; by a) having said eye or eyes, fixated on a preceding fixation object FOp, which FOp is identifiable by the person only when said eye or eyes is accurately fixated on said FOp, i.e. when said FOp is positioned at the fovea of said eye or eyes of said person, execute a saccade or smoothly pursue in response to provided said STS or said SPTS, respectively, b) providing a fixation object FO which FO is identifiable by the person only when said eye or eyes is accurately fixated on said FO, i.e. when said FO is positioned at the fovea of said eye or eyes of said person, at a location whereto said eye or eyes of said person is expected to be fixated at the end of said saccade or during said smooth pursuit, c) having said person identify said FO, said identification referred to as an identification of said FO, d) having said person report said identification of said FO, e) recording correctness of reported identification of said FO and time points of providing said STS and/or FO, if said SPTS is employed, and reporting of identification of said FO, f) calculating time period between providing said STS or FO, and reporting of said identification of FO, if said STS is employed; and/or time period between providing said FO and reporting of said identification of FO, if said SPTS is employed; wherein an incorrect or missing reporting of identification, and/or extended delay in a correct reporting of identification, compared to delay regarded normal for persons corresponding to said person, or compared to delays for other locations of the visual field of said eye or eyes of said person, or compared to delays of said person obtained at earlier time point in his or her life, are markers for an abnormal and/or deteriorated ability of said eye or eyes of said person to detect said STS at said specific location of the visual field of said eye or eyes of said person, ability of said eye or eyes of said person to accurately hit a target by executing a saccade triggered by said STS, ability of said person to identify said FO, accuracy of smooth pursuit of said eye or eyes of said person, said smooth pursuit being triggered by said SPTS, and/or function of said visual system of said person. |
