We solved the problem with the adhesive patches. The initial purchase may be expensive, but considering the duration it will be worn and the alternatives, it is worth it.

Furthermore, it has excellent application (it closes around the entire field of vision - no light passes through anywhere) and does not bother the child. At first, the child had some slight marks under the eye from the stitching at the edges (similar to when you wear a mask in the sea for a long time during the summer and you take it off and the shape remains; much less in this case). After that, it stopped and now we are perfect.