Some say lightning doesn‘t strike twice, but in the case of Marco‘s OPD-Scan III, lightning has struck three times. With the OPD-Scan III, Marco didn‘t simply release a new software update with a new screen. The manufacturer, Nidek, actually took a clean slate approach and reworked the diagnostic machine from the chassis on up. The standard eye exams benefit from the OPD-Scan III and its ability to highlight wavefront aberrations that limit the effectiveness of spectacles. Did you ever know that your prescription can be different in the daytime versus the nighttime? These changes can occur due to pupil size adjustments during the day and night. During the day, our pupils are smaller and pass light through the very central portion of the cornea and lens. At night, our pupil size is larger and pass light through wider portions of the cornea and lens. These are better known as photopic and mesopic changes. The Nidek OPD-Scan 3 has the capability to capture these daytime and nighttime prescriptive changes and allow the doctor to choose the best possible prescription for your needs. This one device has become the gateway to our clinic. We look forward to sharing it with you on your next visit.