CT) use a puff of air to flatten the cornea, eliminating the need for anesthesia or contact.
Corneal Thickness Influence: The rigidity and thickness of the cornea affect the measurement; thinner corneas may result in artificially low readings, while thicker corneas may lead to falsely high ones.
Slit-Lamp Integration: The most common Goldmann applanation tonometer is mounted on a slit lamp.
Calibration: Instruments require daily calibration using standard weights to ensure accuracy.
Mire Rings (Goldmann): A split-image prism creates mires (marked rings) that are aligned to determine the applanation point and thus the IOP.
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