I know bloodshot eyes are not usually a cause for concern but I developed a burst capillary in my right eye on Sunday morning and woke up to another in my left this morning. I now look like the spawn of Satan! No trauma linked to eyes. Could this be due to Letrozole and should I be concerned?
I would see a medical eye doctor for this.
I had lots of eye problems as soon as I started Letrozole, now Anastrazole, same. Mine were floaters, flashes stuff that can happen in aging (I’m probably older) but I believe the aromatase inhibitors just f everything up.
Also, they said it’s not the AI’s that caused mine but surely it is based on the timing.
Thanks for replying kaq. I was thinking it might be wise to call the optician. I already had dry eyes so the tablets won’t have helped. It’s also the start of Hayfever season so I suppose there could be a few factors at play.
I would get yourself checked by a good Optician - they should be able to tell you if it’s just surface burst capillaries ( I’ve had these before there was no problem )or if they’re a sign of something underlying in your eyes . When it’s your vision you really can’t afford to take chances .
A couple of years before I got BC I had what I thought was an atypical migraine . I ended up having to go to A+ E and was diagnosed with central retinal vein occlusion - a blocked and leaking vessel at the back of eye . My eye looked normal and still does .
It might be a good idea to get your blood pressure checked as well as that can affect the eyes. Xx
Thanks for the advice. I’ll make an appointment today just to be on the safe side. X
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@normsgirl I hope you are feeling better today, if you have a problem getting an appointment, have a look on line for MECS they have same day appointments and can referral to the hospital if needed.
Wishing you well, Tili 
Hi @normsgirl ,
Thanks for your post.
Letrozole can cause problems in the eye as a side effect of the drug. These are usually blurred vision or eye irritation.
A burst blood vessel in the eye (subconjunctival haemorrhage) is a common, usually harmless condition where a tiny vessel breaks under the eye’s clear surface, resulting in a bright red patch on the white (sclera).
Whilst the condition is not listed as a specific side effect, I can see that others on the forums over the years have reported this whilst taking letrozole.
Letrozole can however cause raised blood pressure which can also be associated with burst blood vessels in the eye. And as you point out other conditions such as hay fever may also affect the eye.
As @kaq, @JoanneN and @Tili have commented, since letrozole can cause eye problems it’s best to report this to your treatment team so they can assess you and give further advice. This may include seeing an optician.
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