Phoroptor Breath Shield Tonopen Batteries one spring mechanism ensures correct

one spring mechanism ensures correct reading regardless of patient's posture

Median Field Diagnosis and Treatment

Left or right sided Mounting Options

Long-life Battery

For use with Marco Projection Perimeter

Phoroptor Breath Shield Tonopen Batteries one spring mechanism ensures correctThis breath shield was designed to easily slip onto most AO and Marco style phoropters, creating an additional breath barrier between doctor and patient, while not interfering with the use of the phoropter, or touching the nose of the patient, even when the PD is adjusted. This patent pending design features special contours that cover the gap between the two sides of the phoropter without covering the oculars or interfering with the use of cylinder