pupillary reflex

(redirected from Direct reflex)
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Synonyms for pupillary reflex

reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

References in periodicals archive ?
The Direct Reflex (DR) Layout feature makes locating points on a deck or overhead fast and efficient because users do not need to know elevation in order to achieve an accurate location-Trimble MEP determines the elevation automatically and turns the total station to the correct position.
The Trimble S6 also features Direct Reflex (DR) technology, which allows measurement without a prism to 300 meters or more.
The TS305 and TS315 offer Direct Reflex (DR), a unique measuring capability which provides contractors the ability to measure without the need for a prism.
These include: the GPS Total Station(R) 4700 with an extended range of field data collection solutions; a new survey controller for the Zeiss(R) Elta(R) surveying system; and the TTS(TM) Optical Survey Family superceded by the new Geodimeter(R) 600S DR 200+ Direct Reflex instrument.