eyesight affected by cancer treatment

Hi,

I'm Kate.

Diagnosed with left breast Invasive Ductal Carcinoma and Ductal Carcinoma in situe in January 2022. No symptoms that I noticed - so came as a total shock.  Routine mammogram.

Been through chemo: six cycles, including Epirubicin Cyclophosphamide (EP) followed by Docetaxel and Transmuzatab (Phesgo) up until March last year. Then two lumpectomies and axillary node remolval. One positive node in Sentinalnodes , none in axillary nodes. followed by mastectomy (completed 5/7/22) with reconstruction and then radiotherapy (15 treatments - completed on  5/11/22.

Just to update on sudden deterioration of sight in one eye...

...Been to Eye Hospital etc. No pathology seen to eye (phew!) but what damage there was is now deemed to be 'probably' caused by EP chemo, which I finished over eight months ago - possible late/delayed effect. The eye specialist had not heard of Letrozole causing this. Still, there is information on some studies on internet regarding possible effects of AI's (Letrozole included) which says it might indeed contribute to damage. I'm hoping it is not permanent...

Maybe it's a combination of different factors that have caused this - chemo and the A! (?). At the moment my BC nurse said to take a break of a couple of months from the Letrozole anyway.

Ho hum...all so confusing (and, obviously, distressing).