phototest

photo- +‎ test, not only reflecting clipping of photosensitivity test but also reflecting the fact that the test often is literally a "light test" (a test using light), such as with timed exposure to a measured amount of UV-A or UV-B.

IPA^(key): /ˈfoʊtoʊtɛst/

phototest (plural phototests)

1. A photosensitivity test.

phototest (third-person singular simple present phototests, present participle phototesting, simple past and past participle phototested)

1. (transitive) To test (something; usually someone's skin) with a photosensitivity test.