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. 2022 Dec 18;15(12):2037-2040.
doi: 10.18240/ijo.2022.12.23. eCollection 2022.

Differentiation of premacular hemorrhages with niveau formation

Yorihisa Kitagawa  1 , Hiroyuki Shimada  1 , Akiyuki Kawamura  1 , Hiroyuki Kaneko  1 , Koji Tanaka  1 , Hiroyuki Nakashizuka  1
Affiliations

Differentiation of premacular hemorrhages with niveau formation

Yorihisa Kitagawa et al. Int J Ophthalmol. .
No abstract available

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Figures

Figure 1
Figure 1. Intrapocket hemorrhage in case 1
A: Fundus photograph shows an intrapocket hemorrhage with niveau formation. There is no spreading of hemorrhage to surrounding tissue (*), except for the hemorrhage in the connecting channel leading to Cloquet's canal (arrow). B: On OCT, no retinal compression (arrow) and the thin anterior wall of the vitreous pocket (arrowhead) can be seen. The hemorrhage is denser in the inferior portion due to gravity. C: The hemorrhage is displaced inferiorly. D: OCT confirms posterior vitreous detachment. Hemorrhage is identified in the vitreous (*) but not in posterior vitreous cortex. OCT: Optical coherence tomography.
Figure 2
Figure 2. Sub-ILM hemorrhage in case 2
A: Fundus photograph shows a sub-ILM hemorrhage with niveau formation and subretinal hemorrhage (*). Spreading of hemorrhage to surrounding tissue is observed (arrow). B: On OCT, the hemorrhage compresses the retina (arrow) and has uniform density because of the ILM (arrowhead). Subretinal hemorrhage (*) is confirmed. C: Hemorrhage was absorbed after 3mo. D: On OCT, cells depositing on sub-ILM space (*) at the fovea and partial posterior vitreous detachment (arrow) can be seen. OCT: Optical coherence tomography, ILM: Internal limiting membrane.
Figure 3
Figure 3. Premacular retrocortical hemorrhage in case 3
A: Fundus photograph shows a premacular retrocortical hemorrhage with niveau formation. Bleeding spreads nasally beyond the optic disc, accompanied by vitreous hemorrhage. Spreading of hemorrhage to surrounding tissue is observed (*). B: On OCT, the hemorrhage does not compress the retina (arrow), and posterior vitreous (arrowhead) can be seen. C: Fundus photograph at 6mo after vitrectomy. D: OCT shows no macular edema. OCT: Optical coherence tomography.
See this image and copyright information in PMC

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