Portable self-measurement pupillometer with active opto-electronic centering aid and method for use thereof
First Claim
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1. A portable pupillometer comprising:
- a passive target which allows a user of the portable pupillometer to center the user'"'"'s pupil on an optically sensitive element in the pupillometer so that the pupillometer can characterize the pupil; and
a set of centering diodes disposed on thepassive target which are activated by on optico-electronic means to give the user an indication that the pupil has been centered on the optically sensitive element when the user has centered the pupil on a defined portion of the passive target.
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Abstract
Pupillometers with semi-passive targets. The semi-passive targets allow a user of the pupillometer to center the user'"'"'s pupil on an optically sensitive element in the pupillometer to characterize the pupil. Preferably, a set of centering diodes is disposed on a familiar, easily recognized target which is activated by the optico-electronic means to give the user an indication when the pupil has been centered on the optically sensitive element and that the user has centered the pupil on the defined portion of the passive target.
45 Citations
18 Claims
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1. A portable pupillometer comprising:
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a passive target which allows a user of the portable pupillometer to center the user'"'"'s pupil on an optically sensitive element in the pupillometer so that the pupillometer can characterize the pupil; and a set of centering diodes disposed on the passive target which are activated by on optico-electronic means to give the user an indication that the pupil has been centered on the optically sensitive element when the user has centered the pupil on a defined portion of the passive target. - View Dependent Claims (2, 3, 4, 5)
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6. A method of characterizing a pupil comprising the steps of:
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focussing the eye containing the pupil on a passive target; activating an indicator mechanism which will indicate that the pupil is adequately centered on the passive target; and irradiating the pupil with characterizing radiation when the indicator mechanism indicates that the pupil is centered. - View Dependent Claims (7, 8, 9)
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10. A pupillometer comprising:
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optical means for busing light to a user'"'"'s pupil; and opto-electronic centering means for enabling the user to center an image of the pupil on an element in the optical means. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification