Howdy ya'll!
I need help determining whether there is something wrong with my turtles eyes, or if I am over-analyzing this situation.
Let me start with some background information My little lady (she's actually quite big) is a 16 year old redeared slider. About 5 months ago, I moved her over into a 150gal stock tank setup from a 75gal glass tank - the stock tank is not clear, provides more privacy. At the time the move occurred her filtration system crapped out, which resulted in a brief, but unfortunate time in dirty water. The whole situation caused some minor shell rot, which was quickly addressed and mended. I have since purchased the Fluval FX6 - and it's running like a total gem.
Flash forward 5 months, her shell rot is all cleared up, but I have noticed her eyes seem to look a bit foggy. It is winter, the water is a bit cooler and she is in a partial burmation, so naturally she's a bit more docile - but I can't tell whether this apparent foggyness is possibly linked to her burmation... or whether its an infection that may be lingering from the dirty water she had months ago. It doesn't appear to be getting worse, but its been this way for about a month or so - She seems to see just fine. Nothing I have found online has been helpful, so I am hoping someone here may have some advice!
Linking the images so you can see them at full quality - in the first image her eyes look normal, in the second two there appears to be a fogginess on the top half..
https://drive.google.com/drive/folders/1zatvnNQ9Fh8BnIcVWeajfF4Ww3GSjTJl?usp=sharing