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All three of our locations are open for all eye care needs. Please review the adjustments we have made in our offices to ensure the health and safety of our patients, our team, and our doctors. Click here to read more.

Phoropter

If, during an eye examination, your doctor has discovered a vision problem like nearsightedness, farsightedness or astigmatism, it’s likely that one of the next steps you’ll take will involve a phoropter. A phoropter is special machine used to switch multiple lenses in front of your eyes to correct your vision.

Phoropters look imposing—like space-age visors—but are really an ingenious way to quickly determine the exact vision correction needed by your individual eyes.

By having you look through the phoropter at a visual reference, image, or the “Big E” chart (the Snellen chart), your eye doctor will help guide you toward lenses that correct your vision impairment by switching lenses within the machine on the fly.

How does a phoropter work?

The process of switching lenses in front of your eyes is less involved than it may look, given the imposing nature of the device. A phoropter is used to manually determine “refraction”—exactly how a lens must be shaped and curved to correct your vision to a normal state, nothing more.

Phoropters are subjective however, based on your visual perception and response to your eye doctor’s questions. Is your vision better, or worse? With this lens, or this lens? How about now?

There are other procedures and technologies available that automatically measure the refraction needed within your eye and produce a “prescription” measurement without your input. These are called autorefractors and aberrometers.

 

Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!

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The well-being and safety of our patients are and always have been our highest priority.

Governor Abbott’s executive order is ending the statewide COVID restrictions and mask mandates, but Vision Centers of Houston will continue to require face masks and practice social distancing while in our clinic. As a healthcare entity, we must follow the guidelines set forth by the CDC.

We are asking you to continue masking. We know that it works. It protects our doctor, staff, and YOU. There are infectious variants are circulating in Texas, and many more people wait to be vaccinated.

Let’s do everything we can to protect each other.

We truly appreciate everyone’s patience and understanding in our desire to protect our at-risk patient population.

We will look to the CDC and their recommendations as we move forward.

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COVID-19 Mask Mandate: Our offices will continue requiring our patients and teams to abide by the mask mandate.
For additional details regarding this policy, please refer to our policy update below.