Hi Lisa
I have had monthly disposable, daily and the none disposable kind and there was no suggestion any were more or less suitable for my eyes. I've actually largely stopped wearing them because my eyes get too dry when wearing them, but I had dry eyes with contacts before the diabetes so there's no real connection there. The only thing I can think of is the daily disposables have a version that's supposed to be moisturising and allow easy transmission of oxygen to the eye, not sure if the "moisturising" version is available as monthly option, and I was told dailies reduce the risk of infection. So it could just be a cautious approach given we have to be careful with our eyes in general and may not rid ourselves of infection as easily. I can't honestly think of any other reason. Maybe ask the optician for an explanation and then get a second opinion from another optician? They may have different opinions, my regular optician said the dryness I experience with contact lenses wouldn't cause any issues, the opthalmic surgeon I see for something totally unrelated advised against contact lenses because I experience discomfort. if you do find out more about why one might be more suitable than the others let me know, I still keep a few pairs for special occasions so I'd be interested to find out 🙂