Weird thing in field of view

So, for a short amount of time I could notice a circular thing, looking a bit like when you click CTRL to find the pointer of laptop's screen. It was in top left corner. It appeared only when I was blinking, so best view of it I had while I was blinking very fast. For last few weeks I had a feeling that something is wrong in the left side of my left eye's field of view, but it wasn't supported by anything, I had no visible problems though. I also have a problem with my sinuses, I feel kind of pressure inside, located just on the top right from my left eye. I associate it with sinuses but I am not 100% sure it is the source. As a side note, I use Ortho-k lenses to cope with myopia. Sorry for my English not being the greatest.

submitted by /u/-Mad_Runner101-
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