This small study looked at 23 people with open-angle glaucoma who had Preserflo MicroShunt implantation. The evidence here is limited because the group was very small. Researchers checked if measurements of the fluid drainage area, called blebs, could tell them if patients would need more surgery later.
About half of the patients needed additional procedures between one month and one year after the operation. However, early scans of the bleb wall thickness and height did not predict who would need these extra treatments. There was also no link found between these measurements and blood vessel density in the drainage area.
Safety details were not reported, so we do not know the full risk profile from this data alone. Because the sample size is so small, these results are just a starting point for future research. Larger studies are needed to confirm if these early measurements truly matter for long-term success.
Patients should discuss these findings with their doctors but not expect them to change care plans immediately. This information helps us understand what might happen after surgery, but it does not guarantee outcomes for any single person. More data is required before these measurements can be used to make clinical decisions.