Invention Grant
US08668338B2 Systems and methods for refractive correction in visual field testing 有权
视野测试中屈光矫正的系统和方法

Systems and methods for refractive correction in visual field testing
Abstract:
Systems and methods for providing variable refractive correction in a visual field testing device are presented. One embodiment of the variable refractive correction involves two or more aligned transmissive plates arranged to produce changes in refractive power by translation or rotation of the plates relative to each other. Several alternative designs for providing variable refractive correction are described. The refractive correction can be set manually or automatically based on knowledge of the refractive error of a specific patient and spherical and cylindrical refractive correction are possible. Additional lens systems can be used to extend the range of refractive correction to accommodate a larger patient population.
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