step-up photophobic response

step-up photophobic response

[¦step ‚əp ‚fōd·ə‚fō·bik ri′späns]
(physiology)
A photophobic response elicited by a sudden increase in light intensity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.