| 摘要 |
PROBLEM TO BE SOLVED: To provide a tool for preventing blur of spectacles, capable of preventing blur of lenses of spectacles easily and stably, and capable of allowing a user to easily see an object near the user, without looking downward, during use of a bifocal spectacle.SOLUTION: A tool for preventing blur of spectacles according to the invention comprises: an engagement part to be engaged to a central part of the spectacles; a regulation part for regulating floating of a mask; and a connection part for connecting the engagement part and regulation part, as means. |
