Observational study of clinical characteristics of dome-shaped macula in Chinese Han with high myopia at Zhongshan Ophthalmic Center

Purpose: To evaluate the prevalence of dome-shaped macula (DSM) in highly myopic eyes among Chinese Han and to detect the correlation with myopic maculopathy and macular complications. Methods: A total of 736 Chinese Han patients (1384 eyes) with high myopia (refractive error <-6.0 diopters or axial length ≥26.5mm) are reviewed based on information entered into a high myopia database at Zhongshan Ophthalmic Center. Subfoveal choroidal thickness (SFCT) and parafoveal choroidal thickness (PFCT) are measured. The prevalence of DSM in patients with myopic maculopathy categorized from C0 to C4. Clinical features, including macular complications, SFCT and PFCT, are compared between myopic eyes with and without DSM. Results: Among the 1384 eyes, 149 (10.77%) show DSM. In highly myopic eyes without macular complications, the best corrected visual acuity is significantly worse in patients with DSM (P=0.002), and the ratio between subfoveal and parafoveal choroidal thickness (S/PCT) is signifi...