

Premium reusable instruments that have been trusted globally for nearly 5 decades.
Katena Calipers
Katena Reusable Calipers have set the standard in ophthalmic instrumentation for nearly 50 years. This broad range of calipers is meticulously designed to meet the diverse measurement needs of ophthalmologists across various surgeries. This line includes the highly sought-after Castroviejo style caliper, available with straight, curved, or angled tips, capable of accurately measuring up to 20mm.




Standard reusable instruments grounded in leading innovation.
Asico Calipers
The ASICO line of precision Calipers are designed to support surgeons in achieving exact measurements in surgery. Our comprehensive range includes standout instruments for precision measurment.



Helveston Scleral Ruler
15mm long, with notches in 5mm increments and single marking tooth at tip; for measuring and marking the distance from the limbus to the location of the muscle reinsertion
Item #: K3-9030

Crandall Capsulorhexis Incision Gauges: Set of 18 Titanium Blades, 1.5-3.2mm
Set of 18 titanium blades ranging from 1.5mm to 3.2mm in 0.1mm increments.
Item #: AE-1582T


Holladay-Godwin Pupil Gauge
Measures pupil sizes from 0.5mm, and 1.0mm to 10.0mm in 1.0mm increments.
Item #: AE-1573

Yeoh Sideport Gauge
Titanium Incision gauge made for sideport, measures between 0.5mm to 1.6mm sizes, in 0.1mm increments
Item #: AE-1572T

