Abstract: Two experiments were carried out to study visual acuity and depth acuity in gymnasiums. Due to the fact that the grand-stand seats in gymnasiums are built on ascending steps, thus the farther seats are poor for visual acuity, however, their higher positions are favorable for depth discrimination. It was found that: 1. Visual acuity decreases lineally with distance; 2. Depth acuity increases with ascending height within a certain distance and remains constant at still further distances. It was concluded that visual acuity is a principle factor that influences visual discrimination in gymnasiums, and that the best seats are not the foremost ones, but rather those situated near the 7th. row.

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