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Ten-year longitudinal morphological changes in dome-shaped maculas in highly myopic eyes.
Retina 2023 September 7
PURPOSE: To determine the longitudinal changes in the morphologic features of dome-shaped macula (DSMs) in highly myopic eyes.
METHODS: Patients with a DSM and high myopia (spherical equivalent <-8 diopters [D] or axial length ≥26.5 mm) were retrospectively studied. The medical records, optical coherence tomographic (OCT) images, and ultra-widefield OCT images were analyzed.
RESULTS: A total of 113 eyes of 82 patients were studied with a mean follow-up of 122.32 ± 6.36 months. During the follow-up, the mean dome height was significantly increased from 181.51 ± 105.55 to 209.85 ± 130.84 μm (P<0.001). There was also a significant increase in the axial length (30.83 ± 1.82 to 31.16 ± 1.86 mm; P<0.001). Subgroup analyses showed that the dome height increased more than 50 μm in 78 (69%) eyes, decreased in 23 (20%) eyes, and was stable in 12 (11%) eyes. The change in the axial lengths was significantly greater in the increased dome height group than in the decreased and stable dome height groups (P=0.042). Multivariable analysis showed that the greater axial length change (OR, 8.73; P=0.017) and horizontal type DSM (OR, 4.14; P=0.026) were significantly associated with the increase in the dome height.
CONCLUSION: The direction of change in the DSM height varies and 69% of the eyes had an increase in height while 20% of the eyes had a decrease in height. The variations in the dome height may result from the difference between the deepening of the peri-dome scleral excavation and the changes of the axial length.
METHODS: Patients with a DSM and high myopia (spherical equivalent <-8 diopters [D] or axial length ≥26.5 mm) were retrospectively studied. The medical records, optical coherence tomographic (OCT) images, and ultra-widefield OCT images were analyzed.
RESULTS: A total of 113 eyes of 82 patients were studied with a mean follow-up of 122.32 ± 6.36 months. During the follow-up, the mean dome height was significantly increased from 181.51 ± 105.55 to 209.85 ± 130.84 μm (P<0.001). There was also a significant increase in the axial length (30.83 ± 1.82 to 31.16 ± 1.86 mm; P<0.001). Subgroup analyses showed that the dome height increased more than 50 μm in 78 (69%) eyes, decreased in 23 (20%) eyes, and was stable in 12 (11%) eyes. The change in the axial lengths was significantly greater in the increased dome height group than in the decreased and stable dome height groups (P=0.042). Multivariable analysis showed that the greater axial length change (OR, 8.73; P=0.017) and horizontal type DSM (OR, 4.14; P=0.026) were significantly associated with the increase in the dome height.
CONCLUSION: The direction of change in the DSM height varies and 69% of the eyes had an increase in height while 20% of the eyes had a decrease in height. The variations in the dome height may result from the difference between the deepening of the peri-dome scleral excavation and the changes of the axial length.
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