Relating to or involving the measurement of the visual field using a campimeter or campimetry.
From campimeter plus the adjective suffix -ical. This technical term developed alongside campimetry as ophthalmology became more scientific and systematic in the 20th century.
Campimetrical testing revealed that people can lose vision in patches without noticing—your brain literally fills in the missing spots, so campimetrical maps show us how our eyes deceive our brains!
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