Study finds, Relation between Choroidal thickness and vessel
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A Study was conducted to analyse the choroidal thickness (CT) and vessel pattern of myopic patients with dome-shaped macula (DSM) and their association with the DSM axis and serous retinal detachment (SRD).

The CT and vessel pattern were assessed on optical coherence tomography (OCT), OCT-angiography and ultra-wide-field photography.

Results:
--27 eyes of 18 subjects (mean age: 65 years) were included.

--Compared with the 11 eyes with horizontal DSM, the 16 eyes with vertical DSM had a shorter axial length (25.8±2mm vs 28.3±2.5mm), a higher mean macular bulge height (624.4±207microm vs 255.4±160.3microm) and a thicker CT (183.1±91.1microm vs 72±38.3 microm).

--Large choroidal vessels crossed the macular area in 75% of eyes with vertical DSM vs 27% of eyes with horizontal DSM, whereas a watershed zone framing the macula was more often seen in horizontal DSM (72% vs 25%).

--13 eyes had an SRD that was not associated with the DSM axis, the mean bulge height, the CT or the vessel pattern.

The presence of an SRD does not, therefore, correspond with the DSM axis, the CT or the pattern of the vessel. The rate, however, in vertical DSM was larger than in horizontal DSM for big choroidal veins crossing the macula.

Source: https://bjo.bmj.com/content/early/2021/06/27/bjophthalmol-2021-319066?rss=1
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