THE 4TH DIMENSION OF OPTIMIZATION FOR
ENHANCED CLARITY AND CONTRAST IN NIGHT+DAY
Pupil dilation in low-light conditions increases the impact of higher-order eye aberrations leading to blurred vision - particularly at dusk, night, or on cloudy, rainy days.
Pupil-Optimized Correction takes into account changes in pupil size, the average spherical aberration of the eye, the patient's add power, and the patient's age to optimize the lens.
Data analyzed from over a million wavefront exams are used in a unique algorithm to calculate the optimization, making ND4™ the only night and day technology in the US that does not require specialized equipment to prescribe.
When pupils dilate in low light, high order aberrations change the refraction resulting in blurred vision.
Refraction with dilated pupil
sph -5.82 cyl -0.16 A 52º
sph -5.25 cyl -0.50 A 13º
*Example Rx, ND4™ is suitable for all prescriptions.
epik™ ND4™ optimizes every viewing point on the lens for clarity at all distances in all lighting conditions.
Read what colleagues and patients are saying
about N+D4™ lenses.
"Love the new N+D4 lens.
I noticed the biggest improvement at dusk and my night vision was amazing."
Kim Townsend, Optician
Dr. Korthals & Associates