Ophthalmology

UWF-FA leakage index predicts NPDR worsening and vision-threatening events

In DRCR Protocol AA, higher baseline ultra-widefield fluorescein angiography leakage index in NPDR predicted greater 4-year DRSS worsening risk. Each 1% increase in baseline leakage index raised the hazard of DR worsening (HR 1.09; 95% CI, 1.05-1.13). Eyes with at least a 1% absolute leakage increase at 1 year had higher 4-year DR worsening risk than stable eyes (61% vs 33%; HR 2.63). Baseline leakage and 1-year leakage increase were also associated with subsequent vitreous hemorrhage and proliferative DR. Quantitative leakage assessment on UWF-FA offers a continuous biomarker for NPDR risk stratification and trial endpoint selection. 1

Tirzepatide use linked to lower 12-month diabetic retinopathy risk and procedures

In a matched US cohort of 173,846 adults with diabetes and overweight or obesity, tirzepatide users experienced fewer DR events than lifestyle-only controls. Tirzepatide was associated with reduced 12-month risk of incident mild NPDR, proliferative DR, and DR with macular edema versus lifestyle alone. Sight-threatening complications, including vitreous hemorrhage and tractional retinal detachment, were less frequent with tirzepatide. Need for intravitreal anti-VEGF injections and pan-retinal photocoagulation was also lower in the tirzepatide group. As an observational study, residual confounding remains, but results support discussing potential ocular benefits when co-managing high-risk patients. 2

Posterior chamber phakic IOL complications are uncommon but clinically relevant

This meta-analysis pooled 214 studies including 45,027 eyes, mostly implanted with the V4c Implantable Collamer Lens model. IOL rotation or displacement occurred at 4.2 events and explantation at 3.1 events per 1,000 person-years. Posterior events such as retinal detachment and macular edema were rare, each under 0.5 events per 1,000 person-years. Complication rates decreased in more recent studies and were lower in Asian cohorts. Predominantly short follow-up and high risk of bias likely underestimate late events, supporting long-term monitoring after PCPIOL implantation. 3

Peripapillary OCTA vessel density predicts progression in intermediate–advanced POAG

This systematic review and meta-analysis evaluated longitudinal OCTA parameters as prognostic markers in intermediate and advanced primary open-angle glaucoma. Lower baseline peripapillary vessel density significantly increased risk of visual field progression (HR 1.05 per 1% annual decrease; 95% CI, 1.02-1.07). Baseline parafoveal vessel density was not significantly associated with visual field progression. Narrative synthesis linked inferior hemifield foveal avascular zone metrics and peripapillary choroidal microvascular dropout with higher progression risk. Peripapillary vessel density appears useful for monitoring advanced POAG where standard OCT suffers from a structural floor effect. 4