Thatās correct. Itās generally recommended for lenses to have at least over 100 Dk/t for sleep and they need to be approved for that. Dk/t is the measured oxygen transmission through the lens material, the higher, the better. I would not recommend lenses with Dk/t of 30 and under even for daily wear as they starve eyes of oxygen. Especially since there are very affordable ones with very high Dk/t like Miru and Biofinity (around 160 iirc).
Comment on šļøš½šļø
chaospatterns@lemmy.world āØ1ā© āØdayā© ago
Thatās also why certain contact lenses canāt be worn overnight or for long periods of time because they arenāt as breathable. At least thatās what my eye doctor said when I got them.
RejZoR@lemmy.ml āØ23ā© āØhoursā© ago
LikeableLime@piefed.social āØ22ā© āØhoursā© ago
Yep and if you wear them for too long your body will grow new blood vessels to supply your oxygen-starved eyes with what they need. These new blood vessels can cover your retina and can lead to blindness.
Learned that one by sleeping in daily disposable contacts for a while and losing a significant portion of my peripheral vision.
0xD@infosec.pub āØ21ā© āØhoursā© ago
Forever?
LikeableLime@piefed.social āØ21ā© āØhoursā© ago
Yup!
buffing_lecturer@leminal.space āØ16ā© āØhoursā© ago
Bet you didnāt see that coming
CybranM@feddit.nu āØ19ā© āØhoursā© ago
Oh damn, did not know that was a risk