Point Spread Function Technology

point spread function technology

better than perfect™

Point Spread Function (PSF) (n): The most fundamental measure of any optical system; the advantage of using a point is that it is essentially a zero dimensional object.

Any time you use a one-dimensional or two-dimensional object in refraction, you are introducing the possibility of bias. For example, a line is one-dimensional, while letters or images are two-dimensional. The orientation of these images may amass astigmatism or higher order aberrations of the eye. The best refraction target is a point.

The The PSF Refractor™ and PSF Integro™ by Vmax Vision Inc. is an innovative technology that utilizes the principles of point spread function to deliver a more refined and accurate refraction, resulting in better vision for patients.

5x More Accurate

The PSF Refractor™ and PSF Integro™ measures refraction data in 0.05D increments –5x more accurate than the phoropter’s 0.25D measurement increments. The refined prescription produced by the The PSF Refractor™ and PSF Integro™ combined with the outstanding design and personalization characteristics of Encepsion Lenses from Vmax Vision, delivers significantly better vision.

Neutralizes Aberrations

Because it uses point spread images, the PSF Refractor™, PSF Integro™, and Perfectus™ automatically correct for both low and high order aberrations in the final prescription, maximizing acuity and contrast sensitivity simultaneously.

what is better than perfect™

see better than 20/20

Giving patients better than 20/20 vision doesn't mean you have overminused them. The combined PSF technology, superior optics, and built-in algorithms allow practitioners to provide patients with better than 20/20 (the current gold standard of perfect vision) vision without the fear of giving too much minus. Vmax Vision's point spread function target allows patients to easily discern the differences in visual quality with confidence, ensuring they have the most precise prescription and visual acuity.

Give your patients Better than Perfect vision.

Prevents Over-Minusing

The PSF target will appear blurred to the patient who is looking beyond the endpoint – rather than simply smaller and darker as with Snellen letters – preventing over-min using and ensuring an accurate prescription and better vision.

Unique Night Vision Correction

The PSF Refractor™, PSF Integro™, and Perfectus™ introduce the first true night vision correction based on an exam conducted in a nighttime environment. The system’s use of a point spread target rather than a Snellen letter is conducive to a ready solution to nighttime vision, generating a unique night vision prescription in just a few minutes.

Unique Night Vision Correction

The PSF Refractor™, PSF Integro™, and Perfectus™ introduce the first true night vision correction based on an exam conducted in a nighttime environment. The system’s use of a point spread target rather than a Snellen letter is conducive to a ready solution to nighttime vision, generating a unique night vision prescription in just a few minutes.

Find the right PSF refractor for your practice:

Prevents Over-Minusing

The PSF target will appear blurred to the patient who is looking beyond the endpoint – rather than simply smaller and darker as with Snellen letters – preventing over-min using and ensuring an accurate prescription and better vision.

Less training. More treating.

The PSF Refractor™ maximizes office efficiency with a refraction system that is easy to learn and operate. Training time is significantly reduced compared to the phoropter, enabling a quick transition to state-of-the-art technology, technician delegation*,and a more productive practice.