Abstract: A system or method for detection of vision problems. The system or method may include one or more of an eye chart, eye patch, reply form, instruction sheet, and reward for returning the reply form. One or more of the eye chart, eye patch, and/or reply form may be packaged together within a single envelope for delivery to a potential user. In order to be effective with individuals that are not well versed in language or numbers, such as infants, children, adults with certain learning disabilities, or others (e.g., adults not fluent in a particular language, such as English), the eye chart may include only graphical elements for visual identification in the vision test by the individual. One or more different eye charts, eye patches or rewards may be provided to a particular user based upon determinations made about the particular user (e.g., age, sex, interests, etc.).

Abstract: A system or method for detection of vision problems. The system or method may include one or more of an eye chart, eye patch, reply form, instruction sheet, and reward for returning the reply form. One or more of the eye chart, eye patch, and/or reply form may be packaged together within a single envelope for delivery to a potential user. In order to be effective with individuals that are not well versed in language or numbers, such as infants, children, adults with certain learning disabilities, or others (e.g., adults not fluent in a particular language, such as English), the eye chart may include only graphical elements for visual identification in the vision test by the individual. One or more different eye charts, eye patches or rewards may be provided to a particular user based upon determinations made about the particular user (e.g., age, sex, interests, etc.).

Abstract: A concealable signaling, e.g., radio alarm, device worn on the person and actuated by concealed switch means that include mechanical detents. The engagement of the detents provides secret tactile information back to the wearer. The presently preferred embodiment is a miniature radio alarm transmitter concealed in a device which also serves as a belt buckle. The wearer distends his waist to actuate the transmitter. Tension in the belt moves an element through one or more detent engagements before it activates the transmitter. These detent engagements make transient changes in the belt tension which are felt by the wearer; these inform the wearer of impending activation, so preventing false transmitter signals or alarms.

Abstract: In a miniature concealable radio alarm transmitter to be worn on the person, a switch means to activate the transmitter. The transmitter is preferably flat in shape, and includes a small battery which extends across the end of the circuit board. Two spring contact members extend adjacent each end of the battery, which has button-type terminals on its ends. A soft sponge elastomer spacer is fitted between each contact member and its end of the battery. The spacer has a central hole. Finger pressure against either spring member forces it toward the adjacent battery terminal to make contact therewith. To connect the battery to the circuit and energize the alarm transmitter, both spring members must be squeezed toward each other from opposite sides of the transmitter, making contact with each battery terminal. It is thus difficult to accidentally activate the transmitter. The switch means comprises two switches in series.