MarkS said:
I can't get daily disposables for my prescription so I use monthly ones.
I can't get daily contacts for my prescription either (due to bad astigmatism in one eye) but I can get them on a prescription which is "good enough" so that's what I've been using for the past 9 years.
Technically you should avoid using contacts for anything where you can get them wet, to avoid infections. This is one of the reasons I like dailies as you can just chuck them away after a trip rather than worrying about what might be lurking. Also, it's because I only ever wear contacts for caving (or swimming) so monthlies seem like a waste.
I've had to cave in glasses a couple of times when I've forgotten lenses and I'm not a fan! Apart from the risk of breakages, they steam up and get muddy far too easily. I'm too blind to cave without anything. Another advantage of dailies is you can easily keep a couple of spare pairs stashed in your car/caving bag for incase you forget.
I've used them for long trips without problems; I find they don't dry out as quickly as on the surface, presumably due to moisture in the air. For really long trips/camps, I take a little bottle of eye drops and/or spare pairs. Just obviously make sure you wash your hands as well as possible before putting in any new lenses.
That's not to say monthlies aren't a viable option, but I'm very happy using dailies.
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