Hi. I'm online and happy to answer your question today.
HiJim. I am a retina surgeon and, while I can not guarantee you will get 20/20 vision after the bubble goes away I can tell you that the yellow tint and blurry vision you are experiencing right now with your gas bubble getting smaller is nothing to worry about.
The yellow tint should resolve.
What your surgeon has told you about low eye pressure and corneal changes makes perfect sense to me and, at this point, I do not believe you have anything to worry about in this regard.
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I hope this information was helpful for you. But I do work for tips so I want to make sure you are happy with me before rating me. If you have another question on this or a related issue feel free to fire away. And please let me know if the rating system gives you any troubles. Thanks in advance, Dr. Rick