Well several months down the track -eye pressure still too high so laser treatment which failed.15/5 had surgery - trabulectomy - to release pressure. Couple setbacks - a leak which healed and now pressure up again so more surgery 7/6. Whilst I recognise glaucoma is a progressive disorder the spike in eye pressure does seem to coincide with my starting Letrozole. Have asked eye specialist to advise oncologist of these changes and will discuss with oncologist next appointment.Put this post up just in case anyone else with glaucoma taking an Aromatase Inhibitor .AIs are highly regarded for post menopausal women with Er+ breast cancer but not as fully understood as Tamoxifen and maybe this is an area for investigation.