Home › Words › O › optotypeoptotypeoptotype means A standardized symbol for testing vision.Among words judged in Lexicurio's Arena, optotype ranks #16,733 of 42,749 for Qualifying.EtymologyFrom opto- + -type.nounA standardized symbol for testing vision.e.g.“Optotypes can be specially shaped letters, numbers, or geometric symbols.”An eye chartDefinitions & examples from Wiktionary (CC BY-SA 3.0).