Preferences and Trends (PAT) Survey

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2018 PAT Survey Draws 1031 Responses 

For the third consecutive year, more than 1000 ASRS members from around the world have responded to the PAT Survey. This year’s survey generated 1031 responses, with 2 out of every 5 ASRS members participating.

Because the survey repeats key questions from year to year, we also are able to present multiyear trending data showing how retina practice patterns are changing over time. 

See the 2018 PAT Survey results >

View the multiyear trending data >

Complete PAT Survey results—as well as the multiyear trending data and an expert roundtable discussion—will be published in a supplement to the winter Retina Times.

PAT Survey Celebrates 20th Anniversary

Back in 1999, an ambitious Society initiative was launched—the brainchild of Kirk Packo, MD, then president of the Vitreous Society (as the ASRS then was known), and today’s ASRS President John Pollack, MD, who had completed his fellowship just 2 years earlier.  The new initiative was dubbed the Preferences and Trends (PAT) Survey. 

As John Pollack recalls in The History of the American Society of Retina Specialists: 25 Years,[1] “We decided the ASRS survey would be designed to identify new and evolving therapies and surgical techniques, controversies, preferences, and trends. It would help relatively isolated retina specialists know if they were practicing along the lines of other specialists … [and] would lead retina specialists to ponder, ‘Am I ahead of my time, on time, or behind the times?’ The PAT Survey would allow us to ‘take the pulse’ of retina specialists around the world—something that had never been done before.”

There was no shortage of ideas—from a first draft of about 250 questions, the original PAT Survey was honed down to 126 questions in 17 categories. (The survey has been trimmed over the years to an average of 75 questions.) Members took the original survey on paper or online, and the results were presented on individual hand-produced posters at the 1999 Annual Meeting of The Vitreous Society in Rome, Italy.

The PAT Survey results have been displayed at each ASRS Annual Meeting since then. As an ASRS member, you can access the complete PAT Survey archive

Kirk Packo and John Pollack served as the PAT Survey editors until 2005, when Robert Mittra, MD, became the editor and John Pollack stayed on board as co-editor. In 2011, J. Michael Jumper, MD, became the PAT Survey editor with Robert Mittra as his co-editor. Then, in 2013, Thomas Stone, MD, took over the reins as editor with Robert Mittra continuing to serve as co-editor until 2014.

PAT Survey results are copyrighted
Results of the PAT Survey are provided solely for the educational interest of ASRS members. All responses and data analyses are the sole property of the ASRS. Publication and/or use of the data are not permitted without prior written approval from the PAT Survey managing editor; email


  1. Pollack JS. ASRS Preferences and Trends Survey: a historical perspective. In: The History of the American Society of Retina Specialists: 25 Years. Chico, CA: American Society of Retina Specialists. 2007:50-51.


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