This study looked at how glaucoma surgery affects the tiny blood vessels and structure around the optic nerve in children and teens with glaucoma. The study included 24 glaucomatous eyes and 24 age-matched normal eyes, following them for two years after surgery. Researchers measured vessel widths, cup-to-disc ratios, and other optic disc features before and after the procedure.
Before surgery, blood vessels around the optic nerve were already narrower in glaucomatous eyes compared to normal eyes. After surgery, these vessels stayed abnormally narrow. Intraocular pressure dropped significantly after the operation. About one in six patients showed cup reversal, where the optic cup appeared smaller, and this was strongly linked to widening of the rim tissue. Preoperative disc hemorrhage and certain optic disc features predicted cup reversal.
The study did not report any safety issues, but it was small and did not include a comparison group that had no surgery. The findings suggest that vascular changes in childhood glaucoma may be hard to reverse, even when pressure is lowered. This means surgery may not fully restore normal blood flow or structure.
Readers should see this as an early, observational study that highlights possible long-term changes after glaucoma surgery in young patients. It does not change current treatment plans. More research is needed to understand what these findings mean for patient care and whether they affect vision outcomes over time.