A unique grading algorithm automatically ranks the probe’s alignment along the axis of measurement. Alignment ranking is immediate, with each qualified measurement assigned a 1-star, 2-star or 3-star rank (3-star representing best alignment). Aided by the audible feedback, the user can adjust the probe’s contact angle during a procedure, correcting misalignments and thereby optimizing measurement.

Unique compression lockout feature for use during contact measurements. When enabled, compression lockout will stop the system from measuring waveforms which show indications of corneal compression. Audible tones are provided to guide the user in adjusting contact pressure and aid in alleviating flattening of the cornea. The compression sensitivity level is adjustable to aid in obtaining contact measurements with minimum compression.

The Flex A-Scan can operate in either contact or immersion mode. Immersion mode eliminates corneal compression by allowing measurements in a water bath. The probe releases ultrasonic pulses into water (rather than directly to the eye). The pulses propagate through the water and into the tissue. This method of measurement eliminates potential deformation of the cornea’s geometry caused by direct contact from a probe