optometer
noun
op·tom·e·ter
äp-ˈtäm-ət-ər 
: an instrument for measuring the power and range of vision
Cite this Entry
“Optometer.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/optometer. Accessed 25 Jul. 2025.
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