Haag Streit History


The founders – Friedrich Hermann and Hermann Studer opened their first workshop in Berne, Switzerland, in 1858. The precision and reliability of their designs were soon acknowledged, and a working relationship with the University of Berne was formed. The company, now known as Haag-Streit, began supplying all of Switzerland with weather stations and, shortly after that, meteorological measuring networks.

Medical professionals at the university were also quick to recognize the opportunities of working with Haag-Streit. They opened the "Insel" Eye Clinic at the University Hospital more than 100 years ago, where they could demo the variety of instruments they could produce. The introduction of electricity to the clinics further boosted demand for the new devices.

The Early Years

An interest in technology, exceptional manufacturing, and cooperation with trusted doctors and scientists allowed for creating instruments that broadened the horizons.
The company's focus on ophthalmic instruments was led by Wilhelm Haag, starting in the 1930s. The premium products that have been manufactured ever since are constantly being improved and updated.
Haag-Streit has been refined over the years and has always been quick to implement cutting-edge technology and electronic instruments. These new engineering skills create intuitive software, like Eye Suite, and automate the manufacturing facilities. Today, Haag-Streit devices are available in 145 countries through a sales network of more than 60 distributors.

Present Day Haag Streit

Haag Streit Slit lamps

Since its introduction in 1958, the Goldmann slit lamp 900 has been popular because of its superior optics and longevity. As a result, more than 100,000 eye care professionals have purchased a Haag-Streit slit lamp. Based on the knowledge gained from this large user base, other slit lamps have been developed by Haag-Streit over the years. They all have the same high performance, durability, and longevity as their predecessor. All Haag-Streit slit lamps are manufactured for the highest quality requirements. The result is superb optics, allowing for accurate diagnostics, safe patient treatment, and stunning imaging results.
Since its launch more than 160 years ago, Haag-Streit has stood for high-precision mechanics. This experience, combined with outstanding Swiss engineering and the use of high-grade materials, ensures perfect mechanics in all our slit lamps, which can last for decades.
Perfection in design, materials, and construction allows all movements to be made smoothly and effortlessly without any wrist or finger strain – and to continue doing so for the very long lifetime of a Haag-Streit slit lamp.


Laser Locators specializes in the preventative maintenance and refurbishment of all types of ophthalmic lasers and diagnostics. Whether you are only looking to service an existing device or want to take your practice to the next level, think of us first.
Contact us today for a complimentary consultation on how you can improve your ophthalmic practice.

by Joey Colarulo, President

About Joey Colarulo


Joey is the President, CEO and owner of Laser Locators.

Joey has significantly contributed to Laser Locators’ growth. He has streamlined the sales and procurement departments by redeveloping processes and implementing new systems. Joey also has developed strong relationships with various industry professionals, Ophthalmologists, distributors and manufacturers around the world to continue to strengthen the company’s global reputation.

Through Joey’s efforts, Laser Locators has tripled its sales volume and added 13 new positions over the last decade.

Joey has over 20 years of experience in global internet sales and marketing dating back to the late 1990s. His expertise in analyzing the marketplace and leverage the latest e-commerce technologies has enabled Joey to drive exponential sales growth year over year. Joey also has extensive knowledge of the reliability, value and overall demand of various ophthalmic lasers that has given Laser Locators competitive advantage in a global market.

Originally from Philadelphia, Joey earned his Bachelor’s degree in Financial Management and graduated Magna Cum Laude from Rowan University.

Outside of work, Joey’s interests include vintage BMWs, horology and collecting rare sports cards. He also enjoys spending time with his German Shepherd and can appreciate a strong espresso shot.