| 摘要 |
PCT No. PCT/NL97/00186 Sec. 371 Date Sep. 23, 1998 Sec. 102(e) Date Sep. 23, 1998 PCT Filed Apr. 14, 1997 PCT Pub. No. WO97/38622 PCT Pub. Date Oct. 23, 1997In order to measure the visual attention of persons or animals to a visible object, a beam (9) is radiated to an area of observation (1) including the persons or animals under test. A measuring arrangement in close vicinity to the object comprises a radiation source (1) emitting, e.g. an invisible parallel beam (9), a scanning member (3), guiding said radiation beam (9) across the area of observation (1) and detector means (6, 7) receiving the radiation scattered from the area of observation (1). Radiation from the retina and/or cornea of said persons or animals is selectively detected and transformed into an evaluation signal.
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