| observable(adjective, visual, chromatic, ocular, optical) | |
| olfactive(adjective, visual, sound, physical, nervous) | |
| olfactory(adjective, visual, sound, physical, nervous) | |
| ophthalmologic | |
| optic nerve | |
| optically | |
| optician | |
| optometrical | |
| organ of vision(expression, idiom) | |
| phonic(adjective, visual, sound, physical, nervous) | |
| plain(adjective, visual, sound, physical, nervous) | |
| popeyes | |
| pupil | |
| receptive(visual, sound, physical, nervous, nerve) | |
| receptor(noun, adjective) | |
| retina | |
| saucer eyes | |
| sclera | |
| seeable(adjective, visual, chromatic, graphic, noticed) | |
| seeing |
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| APA | Smart Define. (2015). optic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/optic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "optic thesaurus" https://smartdefine.org/optic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, optic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/optic/thesaurus/synonyms>. |
| MLA | Smart Define. "optic thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/optic/thesaurus/synonyms> |