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Photoreceptor Integrity Predicts Response to Anti-VEGF Treatment
Asaf Achiron1, Ayana Kydyrbaeva, Vitaly Man
1Department of Ophthalmology, Edith Wolfson Medical Center, Holon, Israel.
Ophthalmic Research
|September 15, 2016
Summary
Foveal photoreceptor microstructure (FPM) changes after anti-VEGF treatment predict visual acuity (VA) improvement in macular edema (ME) patients. Assessing FPM integrity offers a new prognostic tool for treatment response.
Area of Science:
- Ophthalmology
- Retinal Diseases
- Medical Imaging
Background:
- Macular edema (ME) causes vision loss.
- Anti-VEGF therapy is a standard treatment for ME.
- Prognostic markers for treatment response are needed.
Purpose of the Study:
- To assess changes in foveal photoreceptor microstructure (FPM) after intravitreal anti-VEGF treatment.
- To determine if FPM changes can serve as a prognostic marker for visual acuity (VA) in ME patients.
Main Methods:
- Prospective longitudinal study of 16 eyes with newly diagnosed ME.
- Evaluation of FPM integrity at baseline and post-anti-VEGF injections.
- Correlation of FPM integrity with VA and central macular thickness.
Main Results:
- Anti-VEGF treatment significantly improved VA and reduced central macular thickness.
- Larger baseline FPM defects correlated with lower VA and smaller VA gains post-treatment.
- FPM recovery of 100 µm was associated with a 0.04 logMAR VA gain.
Conclusions:
- FPM recovery after anti-VEGF treatment is significantly linked to VA improvement in ME patients.
- Direct measurement of photoreceptor integrity can be an additional tool for assessing retinal function.
- FPM assessment may aid in predicting treatment response in newly diagnosed ME.
