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Hansen Ophthalmic Development Lab is a third generation family owned business established in 1954. We manufacture and sell the Burian-Allen ERG Electrode used by medical research and diagnosis facilities around the world.

  Burian-Allen ERG Electrodes  

Available in two models: 

Unipolar (original design)

Bipolar (Lawwill modification: A.J.O. Vol. 51, No. 6, June 1966)


All Burian-Allen ERG Electrodes are handmade to order in trimester batches starting in the months of January, May, and September. Repair and reconditioning services are available on the first of each new trimester month.

New manufacturing lead times can range anywhere from 6-12 months - Email for current ETA. Repair batches are limited in size. Please contact us prior to sending any repairs to receive next batch status - Note new mailing address.


Email for estimates, ordering information, and general inquiries.

Left to right: Large Adult, Adult, Pediatric, Infant, Small Infant, Special Small Infant, Large Premature Infant, Premature Infant

Electrode Sizes Available
Large Adult                           25.0 x 24.0 mm             Item Number: 303-20LA

Adult                                      22.0 x 21.0 mm              Item Number: 303-20A


Pediatric                                21.0 x 20.0 mm             Item Number: 303-20P


Infant                                     20.0 x 19.0 mm             Item Number: 303-20I


Small Infant                          18.5 x 18.0 mm             Item Number: 303-20SI


Special Small Infant             16.5 x 16.0 mm             Item Number: 303-20SSI


Large Premature Infant       14.5 x 14.0 mm             Item Number: 303-20LPI


Premature Infant                  12.5 x 12.0 mm             Item Number: 303-20PI


Cleaning and Disinfecting Instructions


Jeff Hansen


Mailing Address: 

1735 Pence Ave

Bellingham, WA 98226



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