Inter-university Research Institute Corporation National Institutes of Natural Sciences

Tokai Optical Co., Ltd.

Yuko Nagata

Koji Inui

Yasuyuki Takeshima

Masaya Suzuki

Ryusuke Kakigi

[Problem] To provide an evaluation method for evaluating spectacle lenses that is capable of objectively evaluating spectacle lenses suitable for a user by measuring brain activity, and a design method for designing spectacle lenses using the evaluation method. [Solution] A subject is allowed to wear to-be-evaluated lenses, and the subject is allowed to visually observe a visual stimulus object used to evoke an activity of a specific part of the visual cortex of the brain through the to-be-evaluated lenses, and an evoked activity of the specific part of the brain's visual cortex when the visual stimulus object is visually observed by the to-be-evaluated lenses is measured by an electroencephalograph or by a magnetoencephalograph, and the spectacle lenses are evaluated based on time (latency) from when a visual stimulus is received till when a change is caused thereby or based on the magnitude (amplitude) of activity.

Method for assessing spectacle lens by evoked activity in visual cortex of brain or the like, and method for designing spectacle lens using said method for assessment

Growing community of inventors

Okazaki, Japan

Yuko Nagata