<p>Can you look at the lenses and know? how can you tell?</p>
<p>I usually change mine every two weeks, but the few times i’ve worn them longer they seem to sting a bit. If in doubt I’d just throw them out, unless you don’t have any back ups.</p>
<p>If they appear dry and are prone to breakage most likely . . when they get kinda rough on the edges</p>
<p>Please follow your doctor’s advice. My H almost lost his vision this year due to a contact issue ( vey complicated…)
Disposables are great for this reason.</p>
<p>You can’t really tell, unless you try them. It’s like a toothbrush, you can just tell when it’s old. They also will sort of pinch your eyes if they are too old.</p>
<p>I’d say when the edges start wrinkling</p>
<p>hahah i crack up everytime someone says "my H’ or “my S”, why dont people just use names on here or type son/daughter?</p>
<p>sorry, random thought.</p>
<p>Because neither son nor daughter begins with an H?</p>
<p>Your vision will get a bit foggy near the end of the day. It’ll get dry and you’ll blink a lot more. Throughout the day, it might feel like as if something is in your eye.And when you take them out, the lenses will kinda try to stay stuck on to the eyeballs.</p>
<p>You follow the directions given by your doctor. Disposables are 1 day, most soft (excluding night and day) are 2 weeks if you don’t sleep in them, and one week if you do. Hard are supposed to be worn for a year or two, and long wear soft are supposed to be worn for 6 months (but you can’t sleep in them).</p>
<p>Touche’ Beantown. You’re right- it does sound sorta ridiculous.</p>
<p>When you’re blinking at a faster rate and more frequently than usual.</p>