A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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| Number | Title | Issue Date |
| 8136945 | Ophthalmological measuring apparatus An opthalmological measurement apparatus (1) is proposed which comprises a first measurement system and a second measurement system. The first measurement system comprises a first light projection system for projection of a first light beam (2) through... | 03/20/2012 |
| 7434933 | Device and method for determining geometric measurement values of an eye A device for determining geometric measurement values of an eye, in particular a human eye, comprises a light projector for projecting a beam of rays through a section of the eye and image capturing means for capturing two images of a partial region of the section i... | 10/14/2008 |