| 摘要 |
The invention relates to an optical bench. The optical bench (1) is of the type using a beam (2); arranged on the beam (2), from one end (3) to the other end (41), are a forehead support (5) and a chin support (37), at least one bar (B1, B2) which is retractable by rotation and mounted slideably and retractably on the beam (2), a filter support plate (PF); a test support plate (PT), projective lights (E); the filter support plates (PF) comprise means of closure by indexed rules mounted on slides, the test support plates (PT) comprise square, rotary and indexed prisms, the surfaces of which carry letters, signs and pigmentary colours. The invention applies to the study of eyesight disorders. <IMAGE>
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