Simulated missing of ILM in Uveitis asssociated macular edema with overlooked hyaloid attached

Initially, I was uncertain whether there was ILM at all, since ICG staining did not stain at all, not the posterior pole, not the ILM outside the posterior pole. Only after more or less blind peeling a preretinal sheet unraveled, that turned out be attached thick changed hyaloid, preventing the staining of the ILM. After posterior vitreous separation staining of the ILM was possible as usual. The reason for a completely negative ILM staining may therefore be: not developed ILM or ILM covered up by hyaloid.