Where does “глазёнка” come from?

глазёнка (Russian) comes from Russian глаз, from Old East Slavic глазъ, from Proto-Slavic glazъ, from Proto-Indo-European g(ʰ)el- — round, spherical, stone.

Ancestry of “глазёнка”, step by step

StepLanguageWordMeaning
1Russianглазeye; eyesight; view, opinion
2Old East Slavicглазъball, eye
3Proto-Slavicglazъball
4Proto-Indo-Europeang(ʰ)el-round, spherical, stone
Every word from Proto-Indo-European g(ʰ)el- →Every word from Proto-Slavic glazъ →Every word from Old East Slavic глазъ →