Relation between subfoveal choroidal thickness and visual acuity in patients with wet and dry age‐related macular degeneration

Abstract

AbstractPurpose To evaluate the relationship between best‐corrected visual acuity (BCVA) and subfoveal choroidal thickness (SCT) in patients with wet and dry age‐related macular degeneration (AMD).Methods We investigated 63 eyes of 58 patients who were diagnosed with wet AMD, and 69 eyes of 56 patients who were diagnosed with dry AMD. All patients were evaluated in the Department of Ophthalmology at the “Lozano Blesa” University Clinic Hospital, Zaragoza, Spain, between January and October 2013. SCT was measured by using enhanced depth imaging (EDI) in spectral domain optical coherence tomography (SD‐OCT).Results The mean age of patients was 80.2 ± 5.9 year and 81.1 ± 5.2 years in patients with wet and dry AMD respectively (p>0.05, t student test). BCVA was 20/100 and 20/40, in patients with wet AMD and dry AMD, respectively (p<0.001, t student test). Mean SCT was 151.1 ± 73.5 µm and 155.6 ± 55.1 µm, in wet AMD and dry AMD patients, respectively (No statistically significant differences, p>0.05). Wet AMD patients showed a positive and statistically significant correlation between SCT and BCVA (r=0.298, p=0.018). Nevertheless, patients diagnosed with dry AMD showed no relationship between SCT and BCVA (r=0.085, p=0.488).Conclusion BCVA is positively correlated with SCT in patients diagnosed with wet AMD. No correlation was observed between both parameters in patients with dry AMD.