Abstract
OBJECTIVES: To investigate dome-shaped macula (DSM) in mild myopic or non-myopic eyes. METHODS: Participants aged 50 years or older were recruited from July 2023 to August 2023. Clinical features including age, sex, visual acuity (VA), spherical equivalent refraction (SER), ocular biometry parameters, SS-OCT parameters and macular complications were compared between eyes with and without DSM. Logistic analysis was performed to explore risk factors for DSM. RESULTS: 923 eyes were enrolled in the final analysis. The overall prevalence of DSM was 3.03% (28/923). Among eyes with DSM, 13 eyes (46.4%) were emmetropia, 9 eyes (32.1%) were hypermetropia, and 6 eyes (21.4%) were myopia, with 4 eyes (14.3%) were mild myopia and one eye (3.6%) was moderate myopia. The mean subfoveal choroidal thickness (SFCT) in eyes with DSM was 168.00 ± 77.79μm, which was significantly thinner than their counterparts absent of DSM (289.11 ± 95.58μm, p < 0.001). Logistic regression revealed that longer AL (odds ratio (OR) = 1.716, 95%CI: 1.205-2.442, p = 0.003) and female sex (OR = 3.330, 95% CI: 1.109-10.005, p = 0.032) were associated with DSM. No vitreomacular complication including epiretinal membrane (ERM), vitreomacular traction (VMT), lamellar macular hole (LMH) and full-thickness macular hole (FTMH) was found in eyes with DSM, while the overall prevalence of those macular complications in eye without DSM was 8.8% (79/895). CONCLUSIONS: The study offered a detailed profile of DSM in mild myopic or non-myopic eyes and found a diffuse thinning of choroid in both foveal and parafoveal area in eyes with DSM. No case with vitreomacular complications was identified in DSM eyes in our study population. TRAIL REGISTRATION: The registration number of the present trial in the Chinese Clinical Trial Registry is ChiCTR2000037944.