1) service performed [only] under the master's eyes
1a) for the master's eye usually stimulates to greater diligence
1b) his absence, on the other hand, renders sluggish
Part of Speech: noun feminine
Citing in TDNT: 2:280, 182
From G3788 and G1397; sight labor, that is, that needs watching (remissness): - eye-service.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ὀφθαλμοδουλία; click on the second column to search for that grammatical form of the root ὀφθαλμοδουλία; click on the third column to search for that word and grammatical form; click on the total to search for the root ὀφθαλμοδουλία.