ARE THEY DANGEROUS???????????????????????????????…!

All right, this is what you need to know. Circle lenses are the same as normal coloured contacts with only a few difference. Circle lenses are thicker than normal contact lenses so they last longer, normal contacts will only last for about a month tops, where circle lenses will last for up to a year. But it is also for this added thickness that you can't wear them for as long on a day to day bases as normal lenses. The thicker lens simply does not allow for the same amount of oxygen to permeate the lens as their thinner counterparts, so it is advised that you don't wear the lenses for more than 6-8 hours a day. Each genuine circle lens will come will a guide book about how to wear, and take care of them and will tell you this.

There is also another misconception that circle lenses are wider than normal contacts, this is not true. Normal contacts clear, or coloured (unless stated otherwise) actually have the same diameter as circle lenses. The difference lies with how far the pattern is printed out. In normal sized coloured lenses the iris pattern is only printed out to the point where the natural iris ends, this leaves a clear ring of the left over contact sitting outside of the iris area. With circle lenses the pattern is printed to the end of the contact so this clear circle rim is not left, this is what gives the illusion of the larger iris. So the contact covering apart of the natural white of your eye poses no more problem than a normal contact lens.

Risks that come with circle lenses are actually risks that come with normal contacts, coloured or not. A lot of the hype you've probably heard of stems from girls buying these lenses online and not consulting their optometrists first. Think of contacts as you would a pair of shoes, there may be a common size that many people fit, but not everyone will have the same size, or needs. This is the same with your eyes, if you order a lens that is the wrong size it can damage the cornea and cause an infection that can threaten your eye sight. If the lens is too flat/big it will slide around your eye and cause discomfort, if it is too steap/small the lens will dig into the cornea which is dangerous. A person may not even be able to wear a standard round shape, if a person has astigmatism they can't wear normal lenses, they have to get torric lenses, otherwise the lens will never be comfortable, or sit on the eye properly.

Getting sized is as simple as asking for a contact lens fitting, and tutorial when you go for your yearly eye exam. It takes about an hour in total for the exam and fitting, so there is no reason for you not to do so. Also, if you already have the lenses, you can go to your eye doctor for your eye exam, and just put them in and get them to see how they fit. It's as easy as putting them in, and looking around the room while they look in your eyes with a light. So there's really no reason not to do so.

More problems come from when girls don't know how to care for their lenses. I've heard of girls putting them in backwards and not knowing it, not knowing how to clean the lenses properly, not knowing how to handle them or identifying damages to the lens, most importantly some girls don't know how to identify counterfeit lenses. Geo, one of the most popular circle lens brands (based in Korea) has had so much trouble with people making cheap knock off's of their lenses have actually started putting verification numbers that you scratch to see, then see if they're genuine on their website. Cheap lenses are usually made in China, and Malaysia and can damage your eyes because of unsanitary production lines, and dangerous cheap materials they use.

Another problem comes from girls who have glasses assuming that their prescription will be the same for contacts. This is simply not the case, and even if they do flook out and get the right size, and shape, they can end up putting unnecessary strain on their eyes as choosing a prescription strength on circle lens orders is as easy as choosing the colour. This is why it is so important for people to see their eye doctor before getting lenses of any type. Contact lenses are not one size fits all, nor are they the same as glasses, and you get in trouble when you assume that they are.

So no, they are no more dangerous than normal contact lenses.

Source, my Optometrist

I don't think the circle lenses themselves are any more dangerous than other contacts, what I think happens, is a lot of kids are buying the circle lenses from foreign web sites without any prescription or training in how to take care of contacts and them getting their eyes really messed up because they over-wear them, wrong dia, base curve or prescription, don't clean them properly, etc, then they blame the lenses for the problems.

Go get a proper fitting for contacts, they will show you what to do.

In themselves they are no more dangerous than regular contacts IF you buy genuine lenses from a well known brand which has been approved by the authority of the country they've been manufactured in and have ISO and CE certification, like GEO lenses for example and if you use them properly.

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