Frequently Asked Questions


We have compiled a variety of frequently asked sales questions for your convenience or please feel free to call our sales office with any questions you may have.

What number do I call to place an order or request service?

1-800-800-1550. Use this number for all National Optronics and DAC Vision parts and equipment orders, inquiries and service requests.

On August 1, 2018 customer service and inventory of parts and consumables that were previously handled by Satisloh in Germantown, Wisconsin will have moved to DAC Vision in Garland, Texas. From then on, your new contact for National Optronics parts and consumables orders will be DAC Vision. At that time the products will ship from Garland. Online orders can be placed at, DAC e-stores and will be fulfilled by DAC Vision. Order cut off time for overnight shipments is 5 pm Central. Customer Service hours: 7AM-6 PM Central.

Has the warranty changed on my previously-purchased National Optronics equipment?

No, it does not affect your warranty at all. Until August 1st, please contact Satisloh in Germantown for all warranty cases. From August 1st on, warranty cases will be handled by DAC Vision who will fully honor existing warranties of equipment that was bought from Satisloh.

How do I return parts still under warranty?

Contact DAC Vision at 1-800-800-1550 to return parts under warranty.

Who do I call with a finishing equipment question?

1-800-800-1550. The technical support team remains the same group of experienced technicians based in Charlottesville, Virginia and with field techs throughout the US.

What are the advantages of using dry-cut products over traditional wet systems?

Dry systems do not require water lines and eliminate the hassles of special disposal procedures. Discrepancies in sizing due to wheel wear is also eliminated, as typically evident with wet-cut systems.

What materials does Optronics Equipment process?

Our equipment processes Polycarbonate, Hi-Index, CR-39 and Trivex lenses with exceptional accuracy.

How does your edger block?

The 7Ex can accommodate most types of blocks used with the industry; geometric or optical center blocking can be used. Our 3B finish blocker is fully interfaceable to the 7Ex.

Can your patternless edgers interface with other types of tracers or can your tracer interface with other edgers?

Yes. Our Patternless Edgers and 2G Generator are DCScompliant and can interface to other equipment through software that meets these standards. For equipment that does not meet these standards, a gateway device can be used to achieve an interface.

Will I need a compressor?

The 7Ex does not require a compressor, The Horizon II Edger, and 2G Generator require compressed air in order for the chuck system to operate.

Can the Horizon II be converted to a patternless edger?

We do not offer or support this type of conversion as it does not provide 3-axis edging.

Can the 2G Generator cut laps?

Foam or plastic laps can be processed on the 2G.

What is the time frame for delivery after placing an order?

Typical lead-time is 4-6 weeks. Requests for special arrangements are accommodated when possible.

Does the equipment come with a warranty?

All new equipment comes with a one-year parts and labor warranty.

Are cabinets available?

Cabinets for our edgers or generator can be purchased for all equipment. In the event that you have existing countertops or cabinets, a benchtop diagram can be provided to determine if you have the appropriate benchtop space.

Do you accept trade-ins?

Contact your sales representative for current offers.

Is used equipment available?

From time to time, reconditioned units are available. Availability is limited and is “first come, first serve”. Pricing is dependent upon the age and condition of the equipment.

How are operators trained?

Installation and training is included with purchase (within the continental United States) and can be tailored to newcomers within the industry or highly experienced personnel

What if I have questions after the installation of my equipment?

Just call our technical service department, and they will assist you and answer any questions you may have. Optronics is known for the highest standard of service in the industry.

What is OMA Protocol?

Data Communication Standard (DCS). 

Members of the Optical Industry Association’s Lens Processing Technology Division agreed in 1994 to develop standards for data communication between equipment and computer systems in the ophthalmic laboratory. These members wrote a mission statement and formed a task group of the most qualified experts in the industry to develop the standards as follows.