Autorefractors & Auto Kerato-Refractometers (ARK)
An autorefractor — or auto refractor / keratometer ("ARK") — gives your practice a fast, objective starting point for every refraction, measuring sphere, cylinder, axis and corneal curvature in seconds so your subjective refinement takes less chair time. For busy clinics and pre-test lanes, a dependable ARK is one of the highest-throughput instruments you can own.
How to choose an autorefractor / keratometer
- Autorefractor vs. ARK: a pure autorefractor measures refractive error; an auto kerato-refractometer adds keratometry (corneal curvature) for contact-lens fitting and screening. Most practices choose the combined ARK.
- Throughput & workflow: auto-alignment and one-touch capture speed up the pre-test lane and cut staff training time.
- Connectivity: data export to your digital phoropter, lensmeter and EMR removes manual entry and transcription errors.
- Footprint & portability: tabletop units suit fixed lanes; handheld models fit mobile screening, pediatrics and satellite offices.
- Total cost of ownership: weigh warranty, service turnaround and parts availability — not just the sticker price.
The Ezer ARK line — our own house brand
Because Ezer is our own brand, we offer clinic-grade autorefractor keratometers at a fraction of premium-label pricing — backed by full US warranty, an in-house service & spare-parts department, and direct support.
| Model | Type | Best for |
|---|---|---|
| Ezer ERK-BH | Auto refractor + keratometer | Comprehensive everyday refraction lane |
| Ezer ERK-770 | Full-automatic ARK | High-throughput clinics wanting auto-alignment |
| Ezer ERK-9000 / ERK-5400 | Auto refractor keratometer | Value-focused practices |
| Ezer ERH-770 | Handheld autorefractor | Mobile screening, pediatrics, satellite offices |
Frequently asked questions
What's the difference between an autorefractor and a keratometer? An autorefractor measures the eye's refractive error (your starting prescription); a keratometer measures corneal curvature. An ARK combines both in one instrument.
Do your autorefractors include a warranty? Yes — every unit ships with a US warranty and is supported by our in-house service and spare-parts department.
Do you offer new and open-box options? We carry new equipment and, when available, inspected open-box units — ask our team what's in stock.
Can it connect to my phoropter and EMR? Many models export data to digital phoropters, lensmeters and practice-management systems; we'll confirm compatibility for your setup.
