Dinamic Pupil Assessment

Pupil dynamics must be known in planning corneal surgery. Now you can!

pMetrics™ records 6 lighting environments from scotopic to photopic to accurately pinpoint pupil dynamics

pMetrics™ matches recorded data with a lifestyle weighting of the patient to determine the Ideal Pupil™ which encompasses 95% of all pupil conditions experienced by the patient during waking hours

pMetrics™ Dynamic Pupillometer defines the optical zone of the ablation based upon the Ideal Pupil™ computation taking into account the anterior chamber depth thus minimising treatment invasiveness

pMetrics™ defines the ideal central area within the cornea to be dedicated to near-vision in presbyopia treatments

pMetrics™ is also a precious tool to define the ideal zones for multifocal IOLs selection


Clinical Applications

Technical Data

Ideal Pupil™

Statistically Calculated Optimum Pupil Dimension

Contemporary refractive and cataract surgeries require complete analysis of the patient’s pupil system. In the past, surgeons had little choice but to estimate pupil dimensions or to assume that pupils were “normal” sized for which standard-size ablation dimensions were applied. This typically results in either too small of an ablation with lasting halos or starbursts, or on the opposite the unnecessary removal of corneal tissue.

pMetrics™ applies strong science to eliminate the one-size-fits-all ablation dimension approach in refractive surgery.

pMetrics™ tests dynamically the binocular pupil responses to 6 calibrated light conditions ranging from scotopic to photopic and include diffuse lighting and glare sources. This analysis allows surgeons to raise the standard of care by measuring binocular pupil dimensions and reactivity dynamically in a full range of visual environments.

The Ideal Pupil™ size is then calculated by matching the individual pupil’s dynamic responses to specific visual environments, lighting conditions, lifestyle weighting. pMetrics™ uses a proprietary statistical analysis system and the resultant value is statistically significant to 95% of the patient's typical day-to-day visual experiences.

Finally, the IdealPupil™ is the projection upon the anterior surface of the cornea after the anticipated custom refractive treatment. The measurement is a critical component to deliver optimum coverage to assure that the patients do not experience unwanted visual symptoms from an optical zone that is either too small, and do not have excessive tissue removed due to the use of a "standard size" optical zone.

Therefore the IdealPupil™ application offers surgeon the objective ideally-sized treatment area for refractive and therapeutic treatments and for the calculation of IOLs optical zones and dimensions, and for the definition of the width of the central area of the cornea to be dedicated to near vision in presbyopia surgery.

The pMetrics™ patented technology significantly enhanced the standard of care delivering properly dimensioned refractive surgery.