Eye scanner showdown: do two machines see glaucoma the same way?

This study looked at how well two different eye imaging machines measure the thickness of retinal layers in people with glaucoma. Researchers scanned 141 eyes with both the Topcon Maestro2 and Zeiss Cirrus 5000 to see if their results matched. They also created formulas to convert measurements between devices, helping doctors track glaucoma progression even if patients switch clinics or machines. No treatments were tested—only standard, non-invasive scans.