ophthalmoleukoscope
noun
oph·thal·mo·leu·ko·scope
variants or less commonly ophthalmoleucoscope
(ˌ)äfˌthalməˈlükəˌskōp,
÷(ˌ)äpˌth-
: an apparatus for testing the color sense by means of colors produced by polarized light
Word History
Etymology
ophthalm- + leuc- + -scope