English word erythropsia comes from English -opsia, English erythro-
| Dictionary entry | Language | Definition |
|---|---|---|
| -opsia | English (eng) | (ophthalmology) Forming compound nouns denoting specific deficiencies of sight. [from 19th c.]. |
| erythro- | English (eng) | Used to form scientific terms meaning red, or showing a relationship to red blood cells. |
| erythropsia | English (eng) | An abnormality of vision causing objects to appear red. |