eyestrain eyestone • eyestring · · · Info · Definitions · Synonyms · Characters · · eyestrain · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a tiredness of the eyes caused by prolonged close work by a person with an uncorrected vision problem. Synonyms: asthenopia. · · Noun Definition 1 Synonyms · · · asthenopia · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079