English word optotype comes from English -type, English opto- (Eye, vision, light.)
| Dictionary entry | Language | Definition |
|---|---|---|
| -type | English (eng) | (biology) Used to form words referring to groups of organisms characterized by the presence of a specific feature. Impressed form; stamp; print. Typical form. |
| opto- | English (eng) | Eye, vision, light. |
| optotype | English (eng) | A standardized symbol for testing vision.. An eye chart. |