Abstract
BackgroundTo report four cases with interesting anatomical presentations of multilayer macular hemorrhages with preretinal hemorrhage possibly preventing subretinal involvement of the macular area.Cases presentationObservational study of four patients presenting with macular hemorrhages.ResultsFour patients with multilayer macular hemorrhage due to different causes, presented with a halo-shaped submacular hemorrhage coincident with the preretinal hemorrhage borders. After resolution, in all cases, the macular area underneath the preretinal hemorrhage was found to be spared.ConclusionWe hypothesized that an extensive preretinal hemorrhage can exert a mechanical force pushing the subretinal hemorrhage towards the periphery, consequently protecting the macular area.
Highlights
To report four cases with interesting anatomical presentations of multilayer macular hemorrhages with preretinal hemorrhage possibly preventing subretinal involvement of the macular area.Cases presentation: Observational study of four patients presenting with macular hemorrhages
It is known that submacular hemorrhage leads to retinal damage and permanent visual loss, which is thought to occur by three main mechanisms: barrier effect, tractional changes and toxic damage [4, 5]
Because visual prognosis depends on whether the macular area is affected by subretinal hemorrhage or not, the presence of massive preretinal hemorrhage should be considered an important factor in the assessment of retinal hemorrhages
Summary
Four patients with multilayer macular hemorrhage due to different causes, presented with a halo-shaped submacular hemorrhage coincident with the preretinal hemorrhage borders. In all cases, the macular area underneath the preretinal hemorrhage was found to be spared
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