Macular Thickness Sharpens Glaucoma Risk Prediction
A UC San Diego study found that measuring retinal layer thickness improves risk estimates for patients with ocular hypertension.
Updated on Nov. 9, 2026 in Stroke
Researchers at the University of California San Diego reported that baseline macular GCIPL thickness improved glaucoma risk prediction in patients with ocular hypertension. Adding the measurement raised the OHTS-EGPS risk calculator's concordance index from 0.57 to 0.68.
Why it matters
Ocular hypertension can progress to glaucoma, a leading cause of irreversible vision loss, so better early risk sorting could help clinicians decide which patients need closer monitoring. The findings suggest that macular imaging may add predictive value beyond existing clinical risk tools.
Among 330 eyes of 235 patients followed for a median of 4.4 years, 14% developed glaucomatous visual field damage. Five-year conversion risk was 22% for eyes in the thinnest GCIPL third versus 8% for the thickest third, though the stub does not indicate whether the result has been replicated in other cohorts.
The players
University of California San Diego
A public research university in San Diego whose researchers conducted the study and whose ophthalmology investigators are working to improve early detection of vision-threatening eye disease.
The details
Researchers measured baseline ganglion cell-inner plexiform layer thickness and retinal nerve fiber layer thickness using optical coherence tomography and compared these with clinical risk scores from the OHTS-EGPS tool. Thinner macular GCIPL was associated with progression after accounting for the clinical score, with the strongest link in the inferior sector, while global nerve fiber layer thickness added essentially nothing.
Timeline
Median follow-up in the study lasted 4.4 years.
The study was published in the American Journal of Ophthalmology on November 5, 2026.
Clinical Context
The OHTS-EGPS risk calculator has been the standard reference for estimating glaucoma conversion in ocular hypertension patients. This study shows that adding a macular imaging measurement to that tool improves its concordance from 0.57 to 0.68, pointing toward richer imaging-based risk models.
Patients diagnosed with ocular hypertension may eventually have their glaucoma risk estimated using macular imaging alongside standard clinical scores. Until such tools are adopted, patients should continue regular eye examinations as directed by their eye care provider.
The takeaway
Adding macular imaging to existing glaucoma risk tools may help clinicians identify which ocular hypertension patients are most likely to progress. Patients with ocular hypertension should keep up with routine eye exams to monitor changes over time.
Further reading
Explore more stroke coverage for San Diego readers following neurological and vision-related health research.
