While I don't know much about the respiratory portion of a fungal infection, I can tell you that ocular lesions are extremely rare in brain cancer patients. As far as her vision returning, she'll likely get some of it back - where the lesions are located is where she'll be least likely to recover vision. If you can get the vet to tell you where the lesions are located, you can figure out what portion of her vision she likely won't have. Retinas work backwards - if she's got a lesion above her macula, she won't be able to see low; if she's got a lesion to the left of her macula, she won't be able to see to the right. Let's just hope she doesn't have any in her macula so she can still see straight ahead.
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While I don't know much about the respiratory portion of a fungal infection, I can tell you that ocular lesions are extremely rare in brain cancer patients. As far as her vision returning, she'll likely get some of it back - where the lesions are located is where she'll be least likely to recover vision. If you can get the vet to tell you where the lesions are located, you can figure out what portion of her vision she likely won't have. Retinas work backwards - if she's got a lesion above her macula, she won't be able to see low; if she's got a lesion to the left of her macula, she won't be able to see to the right. Let's just hope she doesn't have any in her macula so she can still see straight ahead.
Much love coming your way.