I got covid in late september. It presented as a lot of sinus pain and blurry vision.
I have no medical insurance so I never went to the doctor (home test).
All I can say is that it is gradually getting better and my vision is almost fully restored. Most days my vision is back to 20/20, other days it's a little blurry or streaky (like in your graphic).
I'm vaxxed and boosted (bivalent too). I think I got covid because I stopped wearing a mask in the late summer (Stupid I know but I was so fucking tired of wearing a mask I gave in). Lesson learned and I'm back to wearing a mask when I go to work or out in public. Probably forever at this point.
The process below seemed to help. I did this for one week at the end of november and this seemed to help a lot. Of course, maybe the symptoms were just running their course as well so it might be a coincidence. It did seem as though my vision would be better after the nasal rinse. Here is the process (keep in mind I am not a doctor and I have no medical training):
I started this on a monday and did this through friday. So 5 days and my symptoms improved greatly. You're not supposed to take sudafed or benedryl long term which is why I only did this for 5 days.
Since then, all I do now is mask whenever I leave the house and do a nasal rinse every other day or as needed (like if I go to a crowed store I'll rinse when I get home).
If you don't want to do a nettipot, Vicks Sinex or Arm-and-Hammer Nasal Rinse work well though they are expensive. Arm and Hammer seemed to deliver better results. Arm and Hammer extra strength and extra strength with eucalyptus is a bit too intense for me. I just buy the regular version.
Other general tips:
Computer glasses can help as well whenever you're using a computer/phone/tablet for long periods of time.
Eye yoga seemed to help.
Lots of videos on youtube: Yoga eye exercises - YouTube
Good luck and I hope your vision returns to normal soon.