optical |
| adjective - Of, or relating to sight; visual
- Strabismus is an defect
- Designed to assist or enhance sight
- A microscope is an instrument
- Of, or relating to optics
- Refraction is an effect
- Of, or relating to visible light
- Optical telescopes don't work when it is cloudy
- Incorporating light-sensitive devices
- An switch opens the door automatically
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