This invention is something regarding the glasses for ophthalmology in order quality to decide contemplation direction of the glasses installation person. Each lens of the glasses (1 and 2), the edge of the eye of the glasses installation person (L) the part which differs moves, the eye limits of the glasses installation person (ZD1, ZG1, ZD2 and ZG2) directing to one, it has the output section in order to irradiate the lighting line. The lens the input section in order to condense furthermore has the portion of the aforementioned lighting line which is reflected inside the aforementioned eye limits. It combines also calculation unit with the glasses in order to decide the contemplation direction of the glasses installation person from the detection signal which measures the portion of the lighting line which condenses simultaneously by the input section of two lenses.
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