Hey Lesley @nonkyboy, been on tamoxifen for 19 months now and noticed my eyes were getting worse. Had also had two instances where the blood vessels in my left eye (better of the two) ruptured and I looked like I was joining the walking dead. Saw the oncologist one week after the second time and then booked into see my optometrist. Optometrist is so far ahead technology wise and fully knows his stuff (trust him implicitly) said my eyes were okay but that it had been 5 years since I'd had my eyes tested - WHAT??????? I would have sworn it was only two years ago - so apparently mine was normal deterioration with aging and the second time my vessels burst it was because I was doing too many somersaults down a hill with slightly elevated blood pressure. Who'da thunk!!!! No explanation for the first but hasn't happened again so not worrying until it does. All the best lovely, hope yours has a normal explanation, so very wise to get it checked out. Xx Cath