quick question: Can i wear contacts almost 24 hours by switching between two?

quick question: Can i wear contacts almost 24 hours by switching between
two?


WOuld that be better than trying to wear one for 24 hours.

I could switch one pair to another and have like a 10 minute break.

Is that okay?

Or maybe i can switch one to another and have like a 1 hour break?

What do you think.

I am talkin gabout accuvue advance with hydro.


By using two pairs i will switch off and on between two and i will replace
two pair every two weeks.

 

It's not so much the age of the lens, it's also the hypoxia and the
mechanical irritation that is the issue.

So your plan is not recommended.

Dom

 

I agree and will add a couple of comments: The extra handling of the
lens actually increases the potential for mechanical irritation, not to
mention pathogen contamination. Further, if the Acuvue Advance is not
giving you the wearing time and comfort that you need, try a different
lens. The Advance lens is not "the latest and greatest." That lens has
essentially been replaced by J&J's newer silicone hydrogel Oasys, IMHO
(and that of many other practitioners) a far superior lens. There are
three (soon to be four) other choices of lens in this technology.

LB, O.D.

 

You could wear focus day and night up to a month but its bad for your
eyes to sleep in contacts, especially for weeks on end. OrthoK may be
what your looking for if you want 24/7 good vision. You do sleep with
orthoK but only for 8 hours or so then they come right out and your
eyes get a rest and soak up lots of oxygen the rest of the time.

 

You are so often so wrong---why do you bother to post here.

1. No one in this discussion mentioned sleeping in lenses, merely being
concerned with a day of comfort. You are off topic. No one asked you.
Go away.

2. High DK silicone hydrogel lenses have been proven to be safe for
overnight use. And if hypoxia (go look it up) is an issue causing
discomfort, high DK lenses are a fix. So there.

3. OrthoK does not provide 24/7 sharp vision, at least not for most
people. It provides temporary and variable improvement. Some folks enjoy
the effect, some don't. Fact. Deal with it.

Why don't you down some of those magic mushrooms of yours and
hallucinate clear vision. Back in the kill file you go.

LB, O.D.

 

no need to be rude! This poster mentioned 24 hour comfort. Normal
people sleep more than 8 hours of their lives a day. She only needs to
wear contacts less than 16 hours at a time.


There is no such thing as safe overnight contacts. The risks are 10
fold and if you want to argue, take it to my optometrist, hes the
expert and hes seen many patients ruin their eyes sleeping in contacts!


OrthoK works great for low myopes and can provide sharp vision for
several days between each application of retainer lenses. If you dont
perform orthoK, you have no knowlege.

 

Did not, read it again.

Huh? That makes no sense. So, then why did you respond about 24/7 if
she's talking about 16 hours. See where I'm going here?

I'm sure you've read the studies. Your so very well informed. NOT.
The couple of dozen out of hundreds of thousands of wearers that end up
"ruining their eyes" are the bozos who continue to wear lenses that
obviously hurt, have red, sore eyes, experience blurred/distorted
vision, have pain and photophobia and don't seek treatment until it's
too late. Injury does not happen without symptoms.

Assumptions, assumptions. Wrong again, ace.

Just stop posting here -- the easiest way for you to get people to stop
calling you on your BS. You have WAY too much time. Shouldn't you be
doing your homework and studying so that one day you might make it out
into the real world?

LB

 

I got the impression that Ace is done with school, basically
non-functional and living in his parent's house. He has all
the time in the world to look for some attention.

-Quick

 

It's too bad, but sometimes being polite just isn't working, and it's
time for RUDE! I think partly it's just your posting style, but you
need to be aware that your posting style irritates some people here a
whole lot.

Let's bring on the dueling ODs!

However, I think it is very rude for you to say which OD is an expert
and which is wrong, especially since you aren't an OD yourself.

That's got to be one of the rudest things I've ever seen on this group.
And exactly how many orthoK procedures have *you* performed?

You are very, very rude! (Or something). Why don't you understand why
others are getting rude in return?

 

Long answer is NO, short answer is no

Your eyes need the break from the contact lens, you run the risk of
severe corneal injury.

 

So, OrthoK corrective devices, which are worn overnight, are not
contacts, or are they not safe? Your statement above precludes one or
the other.

 

"Long answer is NO, short answer is no

Your eyes need the break from the contact lens, you run the risk of
severe corneal injury."

I agree with you and my optometrist does as well. Some will deny theres
a risk but the simple fact sleeping in contacts increases your risks 10
fold vs. taking them out each night.


RT, orthoK is riskier than regular contacts but safer than overnight
contacts. You only wear orthoK a few hours a week while you were
overnight contacts a whole week strait without removing them and giving
your cornea a break!

 

No it's not you moron. The lenses are safe to sleep in.

dr grant

 

I like your attitude Larry. Ace is a dangerous moron.

As Maxwell Smart used to say, "It's a pity he didn't use his brain for
good and not evil".

grant

 

Yeah, Yeah, yeah you dickhead.Most lenses are pretty safe. OK is
extremely safe when used s directed, but there is plenty of evidence
that ON SiH wear is as safe as regular daily wear.

The point you have missed here is why does our intrepid wearer want to
wear lenses for a longer period? Usually the answer is dehydration or
depositing. Both these can be resolved with SiH usage. There is
therefore no need to discuss other modalities.

dr grant
Yes, he's the guy that actually does fit OK lenses and has so for 14
years. You could probably call him an expert on OK because he knows all
there is to know about it.

 

Please cite your sources for that belief.

DrG

 

Patient abuse is the chief cause of people having problems with
contacts.

Regarding "no such thing as safe overnight contacts."...have you and
your O.D. do some homework on SiH (Silicone Hydrogel) lenses...The
brands that are out there, that advertise continuos wear for up to 30
days, aren't just saying it, the FDA has approved it. They all have
super high DK/t ratings which relates to Oxygen transmission. The
mimimum DK/t for safe daily wear has been established to be 24, most
all of the SiH lenses have DK/t well over 100, some approaching 200.
Keep in mind high DK/t doesn't always = a good, comfortable contact
lens. The biggest challenge with SiH lenses right now is patient
comfort. The material they are made of is stiffer, seems to attract
deposits more quickly and in general will have some mechanical issues,
as far as eyes go.

 

So, who are you calling a dickhead?

I'm sure that several of us will send you instructions on how to
"quote". Just ask.

 

The FDA approved extended wear lenses to be worn for up to 30 days
without removal. But researchers later found the incidence of eye
infections was greater among people who sleep in their contact lenses.
The FDA changed the maximum extended wear period to seven days, but
many eyecare practitioners decided that any overnight wear at all is
too risky.

The concern is that potentially dangerous organisms, which might enter
your eye from your fingers, your eyelids, or the lens care solutions
you use, might get lodged under your lens. These organisms can thrive
better if your contact lens is not removed nightly, and if the oxygen
supply to your eye is reduced because a lens is covering it. This might
cause infections that range from an annoying case of conjunctivitis to
more serious conditions that can lead to blindness.





The most serious safety concern with any contact lens is related to
overnight use. Extended-wear (overnight) contact lenses--rigid or
soft--increase the risk of corneal ulcers, infection-caused eruptions
on the cornea that can lead to blindness. Symptoms include vision
changes, eye redness, eye discomfort or pain, and excessive tearing.

The risk of corneal ulcers for people who keep extended-wear lenses in
overnight is 10 to 15 times greater than for those who use daily-wear
lenses only while awake, says James Saviola, O.D., chief of the
vitreoretinal and extraocular devices branch at FDA's Center for
Devices and Radiological Health.

When the eyes are open, he explains, tears carry adequate oxygen to the
cornea to keep it healthy. But during sleep, the eye produces fewer
tears, causing the cornea to swell. Under the binding down of a rigid
contact lens during sleep, the flow of tears and oxygen to the cornea
is further reduced. This lack of oxygen leaves the eye vulnerable to
infection.

Extended-wear rigid lenses also can cause unexpected, sometimes
undesirable, reshaping of the cornea.

Soft extended-wear lenses also bind down on the closed eye, but they
are porous and allow some tears through during sleep. Because they have
so little form, their binding has little effect on the shape of the
eye.

FDA has approved extended-wear lenses for use up to seven days before
removal for cleaning. Still, there are risks with use of extended-wear
lenses, "even if it's just one night," Saviola says. Daily-wear lenses
are removed daily for cleaning and are a safer choice, provided they
aren't worn during sleep.



My optometrist knows all that. I am ashamed of any optometrist who is
so blantly misguided about the risks of extended overnight contact
wear! Just because its FDA approved does NOT make it safe! LASIK has
been "FDA approved" but many thousands of people ruin their eyes from
laser surgury! If you are too lazy to take 30 seconds to pop out your
contacts before you go to bed, you dont deserve to wear contacts! Stick
to glassses!

 

The FDA approved extended wear lenses to be worn for up to 30 days
without removal. But researchers later found the incidence of eye
infections was greater among people who sleep in their contact lenses.
The FDA changed the maximum extended wear period to seven days, but
many eyecare practitioners decided that any overnight wear at all is
too risky.

The concern is that potentially dangerous organisms, which might enter
your eye from your fingers, your eyelids, or the lens care solutions
you use, might get lodged under your lens. These organisms can thrive
better if your contact lens is not removed nightly, and if the oxygen
supply to your eye is reduced because a lens is covering it. This might
cause infections that range from an annoying case of conjunctivitis to
more serious conditions that can lead to blindness.





The most serious safety concern with any contact lens is related to
overnight use. Extended-wear (overnight) contact lenses--rigid or
soft--increase the risk of corneal ulcers, infection-caused eruptions
on the cornea that can lead to blindness. Symptoms include vision
changes, eye redness, eye discomfort or pain, and excessive tearing.

The risk of corneal ulcers for people who keep extended-wear lenses in
overnight is 10 to 15 times greater than for those who use daily-wear
lenses only while awake, says James Saviola, O.D., chief of the
vitreoretinal and extraocular devices branch at FDA's Center for
Devices and Radiological Health.

When the eyes are open, he explains, tears carry adequate oxygen to the
cornea to keep it healthy. But during sleep, the eye produces fewer
tears, causing the cornea to swell. Under the binding down of a rigid
contact lens during sleep, the flow of tears and oxygen to the cornea
is further reduced. This lack of oxygen leaves the eye vulnerable to
infection.

Extended-wear rigid lenses also can cause unexpected, sometimes
undesirable, reshaping of the cornea.

Soft extended-wear lenses also bind down on the closed eye, but they
are porous and allow some tears through during sleep. Because they have
so little form, their binding has little effect on the shape of the
eye.

FDA has approved extended-wear lenses for use up to seven days before
removal for cleaning. Still, there are risks with use of extended-wear
lenses, "even if it's just one night," Saviola says. Daily-wear lenses
are removed daily for cleaning and are a safer choice, provided they
aren't worn during sleep.



My optometrist knows all that. I am ashamed of any optometrist who is
so blantly misguided about the risks of extended overnight contact
wear! Just because its FDA approved does NOT make it safe! LASIK has
been "FDA approved" but many thousands of people ruin their eyes from
laser surgury! If you are too lazy to take 30 seconds to pop out your
contacts before you go to bed, you dont deserve to wear contacts! Stick
to glassses!