To sight a target with one eye without spoiling the feeling of a distance by using a weak visibility lens or a weak visibility filter for one of lenses.

Spectacles for sighting 1A are constituted so that the weak visiblility filter is used for one lens 4a of the lenses 4a and 4b of auxiliary spectacles C freely attachably and detachably fitted to the outside of the lens frame 1 or the lenses 2a and 2b of normal spectacles B, for example. Since this device is constituted so that one eye is covered with the weak visibility lens or the weak visibility filter, a target such as a hole is substantially viewed with the other eye, that means, one eye and the target is easily sighted. Besides, the target can be also viewed with one covered eye though it blurrs. That means, since the target is viewed with both eyes, the feeling of the distance is hardly spoiled. As the result, a ball can be precisely hit by the core of a putter. Besides, since the feeling of the distance to the hole is not spoiled, probability that the ball enters the hole is enhanced.