You're speaking with Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
I regret that my state board of veterinary examiners doesn't allow me to speak to customers by phone in this venue but other experts in this category may be able to assist you in this regard. Please let me know if you'd like another expert to do so and I'll opt out of this conversation. Please stay in the conversation if you wish.
Poppie's best chance to preserve sight is to have her blood pressure reduced if she's hypertensive as I would expect if she's cushingoid. Please have both her systemic blood pressure and intraocular blood pressure checked at your earliest convenience. If she's hypertensive prompt administration of a hypotensive agent is indicated. If her intraocular pressure is elevated, she's glaucomatous and will need prompt treatment to reduce that pressure. SARD is a consideration and you're correct, there's no treatment for it. Please respond with further questions or concerns if you wish.
You're necessarily constrained to observing if the eyes are "red" versus "quiet. Red eyes are inflamed while quiet eyes aren't or, at least, won't appear so with the naked eye. The differential diagnoses vary between red and quiet eyes. Ultimately, eyes need to be examined with an ophthalmoscope and special intrumentation found in the office of a specialist veterinary ophthalmologist. Testing for Cushing's can also tell us if the Cushing's is due to a pituitary tumor or, instead, and adrenal gland tumor. The former is usually treated with trilostane. The latter is best treated with surgery. Please continue our conversation if you wish.
Thank you for your kind accept. I appreciate it. I can't set a follow-up in this venue so please return to our conversation - even after rating - with an update at your convenience. You can bookmark this page for ease of return.
You're quite welcome.