Ask any question regarding contact lenses and we will answer it within a few days. The most interesting questions will be displayed on our site.
How many days will the 90-pack of contact lenses last for?
Question: Does the 90-pack of contact lenses contain lenses for 45 days or 90?
Reply: The number of items per pack always indicates the actual number of lenses (not pairs). If you have the same prescription in both eyes, you can look at the number as half of the amount of contact lens pairs. In this case (90-pack), it would mean 45 pairs = 45 usages. If you have different prescriptions, you would have to buy a different pack for each eye. Then you’d have 90 pairs = 90 usages.
Can I order contact lenses online when I don’t know the lens diameter?
Question: I’m about to start using contact lenses, I just got my first prescription. I would like to buy lenses online as it is much cheaper. I know which type of lenses were prescribed to me but I don’t know the diameter as it’s not written on the prescription. My eye cylinder is small so not sure if that has an impact on anything.
Reply: When it comes to diameter, every type of contact lens has its own specific diameter (DIA) so you can order lenses even without knowing this parameter, all you need to know is the exact name of your contact lenses. When it comes to the cylinder, I can’t really answer as I would need to have more information about your prescribed contact lenses.
Can I order contact lenses online when I don’t know the exact parameters, such as curvature, etc.?
Question: I would like to buy Surevue contact lenses online, I had a trial pair from an optician’s but I don’t know what parameters to fill out (curvature, etc.).
Reply: In the case of Surevue contact lenses, there are two options: if your dioptres are in the plus values (farsightedness), the only curvature available is 9,1. In this case, you only need to enter your dioptres. If you are short-sighted (minus values), you can choose between 8,4 and 8,8 – so you will need to know the correct parameter. If you are not sure about your dioptres or curvature values, please ask your contactologist.
What should I do when switching to a newer model of contact lenses?
Question: I’ve been wearing Optima FW contacts lenses (8,7 curvature) for several years. I would now like to replace them. I was thinking about Soflens 59, but my doctor didn’t recommend them. Apparently, they are thicker and I might not get used to them. He would recommend Proclear. I would like to order the lenses on the Internet but I don’t know what to base my decision on. I would like to ask you for advice. I would also like to ask about all-day contacts, could they be harmful or are they actually better than lenses you have to remove at night?
Reply: It is really difficult to tell which contacts will be the most suitable, over the Internet. Please visit your contactologist who will recommend the best type. By “all-day“ lenses, you probably mean Continuous wear contact lenses that don’t have to be removed at night and can be worn for up to 30 days and 29 nights without a break.
It is possible to wear this type of lenses but you should again consult your contactologist. I would definitely not recommend buying a different type of contact lenses than the ones you are currently used to.
Can I wear contact lenses when I only can’t see well on one eye?
Question: I can see well in one eye and a bit less clearly on the other. My doctor recommended that I wear glasses when driving. I wanted to ask if it’s possible to wear just one contact lens.
Reply: Different prescriptions on each eye are nothing unusual. Even if you only need correction for one eye, you can choose between glasses and contact lenses. See the Contact lens guide for more info about choosing the right contact lenses.
Age limit for contact lenses
Question: When can I start wearing contact lenses? And if I buy dailies (designed for a single use), could I wear them for more than one day? If I take good care of them.
Reply: I guess you are talking about the age limit when you could start wearing contact lenses – there is no specific age and it is up to an ophtalmologist or optometrist to decide. When it comes to the second part of your question about repeated use of daily contact lenses – these are designed for single use. If you want to use your contact lenses repeatedly, get monthly, or bi-weekly ones. In all cases, start with a visit at your ophtalmologist or optometrist.
Bifocal contact lenses for children
Question: My nine-year-old son has been wearing glasses since he was 18 months. He’s got a lazy eye and dioptres. He wears bifocal glasses (RE distance glasses: +4.5, cylinder 0,5, axis 40°, LE 4,5, cylinder 0,25, axis 160°, reading glasses: RE 6,0, cylinder 0,5, axis 40°, LE 6,0, cylinder 0,25, axis 160°).
He plays football and can’t wear glasses during his practice or matches. We would like to get him contact lenses. He has allergies which sometimes manifest in puffy and red eyes even though there have been no signs in the past two years (we go for check-ups at an allergologist's).
I would like to get him daily contact lenses (he would only wear them for football) but is it possible to get them with his prescription and allergies? And if so, can the lenses adapt to his eye defects or just some of them (e.g. they would only fix his short-sightedness)? Can he wear contact lenses if he takes allergy medications (Budiair, Ventolin for inhalation and Aerius or Xyzal tablets)?
Reply: You won’t get a full correction with this specific prescription. It could be possible to correct the eye sight partially, but I can’t promise you anything here. It all depends on a contactologist’s opinion. Allergies can partially limit contact lens use as it is necessary to stop using lenses during allergic reactions.
Contact lenses and cylinder power
Question: I would like to buy daily contact lenses, but my problem is that my cylinder in both eyes is 1,0 and it looks like such lenses don’t exist. What will my eye sight be like with a 0,75 cylinder? (my dioptres are –2,5/-3,0 and axis is 10/170).
Reply: 1-DAY Acuvue Moist for Astigmatism with cylindrical correction are lenses with cyl. =0,75 in 0° and 90° axis. The thing that will actually distort your vision won’t be the missing ¼ of cylinder but the axis turned by 10°. You should be able to sort this problem with the help of a contactologist.
Cylinder power of contact lenses
Question: I have +5.0 dioptres on the right eye, cylinder 0,5 and axis 90 degrees. The same goes for my left eye. I would like to know if there are any contact lenses with similar parameters. I also have astigmatism. I couldn’t find anywhere on the Internet how important the cylinders are.
Reply: In the case of a small astigmatism (up to 0,5 cylinder) the correction is done by so called spherical equivalent and the dioptric value is slightly adjusted after “taking away” the cylinder. Your vision will be slightly blurry without the cylindrical correction. Contact lenses for astigmatism are available in values 0,75 and higher.
Why is it important to have your eye sight measured by a contactologist?
Question: I would like to start using daily contact lenses occasionally. However, I don’t really see the need to have my eyes measured by a contactologist when there’s only one option on offer…for example, for CIBA DAILIES Comfort and Progressives, it’s only possible to order lenses with curvature=8,6 and diameter=13.8.
Reply: If the measuring wasn’t so important, we wouldn’t keep mentioning it here so often. The right contact lenses are not only chosen by numerical parameters but mostly by how the lens sits on the cornea, whether it’s not too tight or loose. Two different types of lenses with the same parameters, made from different materials, can feel different on the eye – one type can fit and the other might not. That’s why it’s important to only use the type of lenses that you have actually tried out and that was approved by a contactologist. Buying lenses randomly can be a real gamble.
How to choose contact lenses
Question: I got contact lenses a few years ago. As I don’t really use them very often, they lasted me for several years. I wanted to buy new ones but found out that it’s difficult for me to choose. The ones that I had before are no longer in production (Hydron Actifresh 400) and I couldn’t find any with my parameters. Could I please ask you for advice? My curvature is 8,4 and diameter 14,3.
Reply: If your type of contact lenses is no longer in production, you should consult your contactologist who will recommend you a new type. The right contact lenses are not only chosen by numerical parameters but mostly by how the lens sits on the cornea, whether it’s not too tight or loose. Two different types of lenses with the same parameters, made from different materials, can feel different in the eye – one type can fit and the other might not. That’s why it’s important to only use the type of lenses that you have actually tried out and that was approved by a contactologist.
Contactologist and choosing contact lenses
Question: I am thinking of getting contact lenses. My doctor only sells a few types and I would like to know if I have to find a new ophthalmologist should I want to use different lenses than the ones she has on offer. I found good reviews of Soflens 59 contact lenses on the internet but my doctor doesn’t have them. Can she just recommend them to me and I’ll buy them elsewhere? Or would it be better to go to a different contactologist?
Reply: Please read the right procedure of choosing contact lenses here: Contact Lens Guide for Beginners and Advanced Users. I would also recommend you find a contactologist who offers more types of contact lenses. Finding the right type of lens is a very personal matter, so please don’t just rely on good Internet references and trust your contactologist’s recommendations.
Is this contact lens application procedure correct?
Question: After asking for contact lenses, my optician first gave me contact lenses with these parameters: –2,25 dpt, BC8,4 DIA 14,0 (my glasses prescription is –2.25 dpt). He taught me how to apply them and then he just checked my eyes with this device (he was probably checking the fit microscopically). Is it a normal procedure? I’d been to several opticians before and they told me they’d measure my dioptres, curvature, etc. first. The lenses seem to fit me well but it seems to me that I have more red veins in the eyes now.
Reply: What you described is definitely not the right procedure, the correct lens fitting should last about 60 minutes, or even longer in the case of a novice wearer. I would recommend you look for a new contactologist and ask them about the eye exam procedure beforehand.
How can you tell that my lens is inside out?
Question: I wear SiH 48 contact lenses. How can I tell if they’re inside out? I wouldn’t want to underestimate it.
Reply: Biofinity contact lenses unfortunately don’t have any markings, but it is not difficult to tell if they’re inside out. Put the lens on your fingertip and look at it from the side. If it looks like a bowl with a rim, it’s inside out. If it looks like half a ball, it’s the right way.
Acuvue Oasys or Air Optix?
Question: I recently had a new eye exam and got a trial pair of Acuvue Oasys lenses by Johnson & Johnson: BC 8.4, DIA 14.0 and a pair of Air Optix lenses by Ciba Vision with BC 8.6 and DIA 14.2. How comes he gave me two types of lenses with different BC and DIA values? Thank you for your answer.
Reply: This issue has been discussed many times. Suitable lenses can have different curvature and diameter values. The difference is usually compensated by other factors and it’s up to a contactologist to differentiate between them. It is thus possible that both types of contact lenses will work for you. And vice versa – there can be two types of lenses with exactly the same parameters that will not fit. It’s these little details that users can’t identify by themselves, but with the aid of a contactologist.
Can contact lenses damage my eye sight?
Question: I got a trial pair of contact lenses and at FOKUS OPTIK they warned me that my vision could get worse by wearing them – i.e. I’ll end up with more dioptres. Is this true? Because I don’t really want to wear them now if they could damage my sight.
Reply: That’s not true. Vision defects, including their progression, are inherent and can’t be influenced by external factors. Wearing contact lenses can, however, cause many other health complications, especially if you don’t follow the rules of correct use.
The price of eye exam at a contactologist
Question: I would like to ask how much does an eye exam at a contactologist costs? Approximately how much do you pay for measuring and a trial session?
Reply: This depends on the market. To find out how much it will be, the easiest way is to contact your local optician. One thing that’s more important than the price is the content of the eye exam. You will find the detailed description of what it should look like here: Eye check for contact lenses (I recommend reading it). There’s nothing worse than having a cheap check-up that doesn’t correspond to what a proper eye exam should be like.
How will I find out my curvature? Is it important?
Question: How will I find out what my curvature is? I got a trial pair of contact lenses from my doctor and I would like to order them online but I don’t know where I can find out my curvature and does it need to be the same as the one that my doctor prescribed to me?
Reply: You will find the curvature value on the blister of your trial contacts, or in the card from your doctor (BC value). It is necessary to use the prescribed curvature and consult your contactologist before any change. The curvature is important because it determines the flatness of the eye and it is thus important to keep the value to ensure that the lens sits correctly on the eye. If you choose the wrong curvature, the lens can slide around the eye, give you gritty feelings and cause redness.
Is it a problem if I order lenses with a different diameter?
Question: I wanted to ask – my lens diameter is 14.2, is it a big difference if I order lenses with 14 diameter? I can’t find any lenses with 14.2 DIA on your e-shop.
Reply: The diameter only determines the size of the lens and that’s why it’s not a problem if there’s a small difference. It could, however, cause problems when you are putting them in. It is always better to try them out at your contactologist’s, which is also necessary when you switch to a new type of lens. You will then find out for sure if the lens' size works for you or not.
How do I put my contacts in correctly?
Question: I wanted to know how to correctly apply contact lenses? What will I need, what should I be careful about?
How to remove contact lenses correctly?
Question: I wanted to know how to correctly remove contact lenses? I don’t remember exactly what my optometrist showed me. Could you please help? Thank you for your answer.
How to apply contact lenses? – instructional video
Question: Is there a procedure I could follow to be able to apply my contact lenses? What should I be careful about? Will I need tweezers, or any applicator?
Before your first contact lens application, make sure you have everything you need at hand. Position yourself in front of the mirror, have your case, solution and, if needed, applicator or contact lens tweezers ready. Women should always apply contact lenses before putting on make-up First of all, make sure you wash your hands thoroughly with soap and dry them with a clean towel. Open the contact lens case and while using either your finger or tweezers, put the lens on the tip of the index finger of your preferred hand. Check if the lens is correctly oriented by gently squeezing the edges together. If a small “tunnel” is formed and the lens sides don’t stick together, it means it is in the correct position. Otherwise turn it over on your fingertip. Use your free index finger to hold your upper eyelid, another finger to hold the lower one and put the contact lens in your eye. Slowly release your eyelid and blink several times. The lens will set itself in the correct position. Repeat with the other eye.
Watch our instructional video:How to put In contact lenses
How do I remove my contact lenses correctly – instructional video
Question: I have a question, I can’t remove my contact lens. Could you tell me how to do it? What’s the best way to take the lens gently out of my eye? Will I need anything for it?
Reply: Below you will find an exact description of how to remove contact lenses, including an instructional video.
Make sure you have all you need at hand: a case, solution and, if using, mirror and glasses. Wash your hands thoroughly and dry them with a clean towel that won’t leave any fluff. Women should always take out their contacts first before removing their make-up! If you are wearing dailies, take the lens out and throw it away. If you use bi-weekly or monthly lenses, have your case and solution ready. Pour solution in the case and fill it up. Make sure you change the solution every day. Use your index or middle finger to hold your upper eyelid and use your other fingers to hold the lower one. If you don’t mind “touching” your eye, look straight ahead and very gently squeeze the lens between your index finger and thumb. This means you will touch the edges of the lens and by squeezing them, an air bubble will occur which will loosen the contact lens and make it easy to take out. If you are not comfortable with touching your eye, use the index finger of your free hand and move the lens towards your nose and remove it through the corner of the eye. Rinse the lens and put it in the case with clean solution. Make sure you follow the instructions of how to preserve contact lenses correctly. Right eye – right contact lens – R, left eye – left contact lens – L. Repeat with the other eye. Close the case properly and keep in a dry place.
Watch our instructional video:How to remove contact lenses
Starting with contact lenses
Question: I don’t know which daily lenses to buy. I want to try lenses from several producers to compare how they feel.
Reply: Unfortunately, we do not ship single pairs, however we advise you to consult an eye doctor in order to have the right ones for your needs, he is the only one who can help you chose the right product for your eyes. Your eye doctor should provide lenses for you to try.
Problems with wearing contact lenses
Question: I would like to ask you for advice. I’ve been wearing contact lenses for four days (I went for a check-up at an eye doctor and she prescribed them to me) and today I’m feeling pain behind my eyes. Could it be because my eyes are still adjusting to the lenses? Or is it not normal and they should get used to them straight away? I wouldn’t want to cause any harm to my eyes.
Reply: You should definitely see an eye doctor or a contactologist. It is possible that the material or brand is not suitable for you. An eye doctor might recommend you a different type.
Advice for contact lens shopping
Question: I would like to buy contact lenses and I need some advice on which ones to get. Right eye –1.00, cylinder –0,50, axis 180°; left eye –1,25 cylinder –0,50, axis 175°.
Reply: Apart from parameters, such as curvature, diameter and dioptres, it also depends on other qualities of the lens, such as material, water content or oxygen permeability. It can happen that even with all the correct parameters, the contacts won’t fit you well. I recommend you visit a contactologist.
Curvature and diameter – advice
Question: I wanted to ask you what role does curvature play? Mine is 8.4. Does it matter if I ordered lenses with an 8.6 curvature? I was recommended the Sensia brand but I chose Air Optix in your e-shop. Is it a problem?
Reply: It is necessary to use the same curvature and diameter (as well as brand of lenses) that was prescribed to you and any changes should be discussed with a contactologist (eye doctor) – it could be a private brand of the optician’s in which case you have the option of finding out the original brand of Sensia lenses. I can’t unfortunately tell you whether the curvature change would work for you or not. Apart from parameters such as curvature, diameter and dioptres, it also depends on other qualities of the lens, such as material, water content or oxygen permeability. If you chose the wrong curvature or diameter, it can cause gritty feelings in the eyes, the lenses could fall out, etc. I recommend you visit a contactologist or an eye doctor who will prescribe lenses to you – measure your parameters and possibly also give you a trial pair and recommend suitable contact lenses for you.
Advice – multifocal lenses
Question: I need to know how to determine dioptres, when my doctor measured these values for short-sightedness: left eye +3, right eye +2.5, for distance vision: left eye +1.5, right eye +1.0, I wear multifocal lenses. Is it possible to combine different dioptres for each eye?
Reply: It is impossible for us to advise which lenses would be the best for you. Apart from parameters such as curvature, diameter and dioptres, it also depends on other qualities of the lens, such as material, water content or oxygen permeability. It is possible that the lenses won’t fit you even if you have all the correct parameters. We recommend you visit an eye doctor or a contactologist who will prescribe lenses and give you a trial pair. So you won't run the risk of buying contact lenses that won’t fit you. Contact lens parameters are different from glasses parameters.
Question: I wanted to ask about the choice of contact lenses for my son. I went to a contactologist and my son tried monthly pro fit professional lenses. He’s been wearing them for less than a month, he’s starting to get used to them, but taking them out and putting them still takes him a while. Which lenses should we buy as we will have to throw away this pair in a few days.
Reply: I would definitely recommend you order exactly the same brand with the same parameters that the doctor recommended and prescribed to your son. In our e-shop, Pro-fit PROFESSIONAL lenses are called Biofinity.
What do I need for scary contacts
Question: I would like to buy scary contact lenses but I don’t know what size and most importantly, which accessories to get.
Reply: When it comes to scary non-prescription contacts, or ColourVue Sclera Full Eye Lenses, for example, we would recommend having some basic parameters measured by an eye doctor or a contactologist, such as diameter and curvature. Then you can buy a Contact lens solution to keep the lenses in and other accessories, such as cases, etc.
Which lenses to choose
Question: Which lenses should I get with these parameters: ARM OD: +1,25Dsf –0,75Dcyl 162 OS:+1,0 –0,75 175?
Reply: It is difficult to advise which lenses would be the best for you. Apart from parameters such as curvature, diameter and dioptres, it also depends on other qualities of the lens, such as material, water content or oxygen permeability. It is possible that the lenses won’t fit you even if you have all the correct parameters. We recommend you visit an eye doctor or a contactologist, who will prescribe lenses to you and give you a trial pair. So you won't run the risk of buying contact lenses that won’t fit you.
Trial lenses keep feeling gritty
Question: This is the second type of lenses I’m trying and they both bothered me in my left eye where my cylinder is –0,75. The lens feels gritty but only in one place. I was told at my check-up that my eye was all right that it’s only subjective feeling. Unfortunately, I can’t wear the lens with this “feeling”. When I started wearing glasses two years ago, I also had problems with dioptres on my left eye but it got better over time. Could it be caused by the cylinder? I see well with it so that’s why my optometrist doesn’t want to change it. However, an eye doctor told me she wouldn’t use it so I don’t know if I should keep trying, hoping that some type of lenses will fit.
Reply: It is difficult to tell from afar what the cause could be. I would recommend you visit an eye doctor or a contactologist, or at least to find a new one, who will recommend the right type of lenses.
I decided to start wearing contact lenses
Question: I decided I would like to start wearing contact lenses and I would like to ask if it’s ok if I just to go to my eye doctor who would do a check-up and send me somewhere if needed, or if I really have to go to see this contactologist.
Reply: We normally recommend you visit an eye doctor or a contactologist who will prescribe lenses to you and give you a trial pair. If your doctor cannot fulfill that requirement, try a different one, or a contactologist.
How important is the lens curvature?
Question: I wanted to ask how important the lens curvature is. I’ve been wearing lenses for a short time and so far, I’ve always ordered them through my eye doctor. As it’s not the cheapest option, I would like to start ordering them myself. I’ve been wearing Acuvue lenses for astigmatism with 8,5 curvature. Most e-shops have lenses with 8,4 or 8,6 curvature. Is it a big problem if the curvature is different by one tenth, is it ok if I order them?
Reply: It is important to keep the curvature value and all changes should be discussed with a contactologist (eye doctor). Lens curvature corresponds to the eye curvature and it should copy the cornea as closely as possible. A doctor should measure these parameters for you – if you buy lenses with the wrong curvature, the lens might not sit right on the eye. It could cause gritty feelings or be too loose. Contact lens with the right curvature fits perfectly, a loose one can pop off your eye, tighter one is more difficult to take out. I would definitely recommend you visit a doctor who will measure all parameters, recommend a suitable contact lens type and give you a trial pair. Other parameters such as material, oxygen permeability and water content also matter. You will thus eliminate the risk of buying contact lenses that won’t fit well.
I would like to try contact lenses but I don’t want to spend hundreds on them
Question: I would like to try contact lenses but I don’t want to spend hundreds, I only want to see if they’d fit me and if it won’t be a problem for me to put them in and take them out. My dioptres are –2,25 on both eyes, right eye CYL –0,5 axis 10 and left Cyl –0,75 axis 165. I don’t know what CYL means and how to buy the right lenses with these values online. It would be more convenient and cheaper but they also have to fit me well.
Reply: Apart from parameters such as curvature, diameter and dioptres, it also depends on other qualities of the lens, such as material, water content or oxygen permeability. It is possible that the lenses won’t fit you even if you have all the correct parameters. We recommend you visit an eye doctor or a contactologist who will prescribe lenses to you and give you a trial pair.
Blurry vision with yearly contact lenses
Question: I got yearly coloured contact lenses, I wore them this morning for the second time. After a few hours, my vision got so blurry I had to take them out. What should I do to stop this, I even used eye drops.
Putting in contact lenses
Question: How do you put contact lenses in?
Amount of lenses
Question: How many lenses do you get in one box?
Reply: It depends on the type of lenses you are looking to buy. All of the lens packages that you can see on the website clearly state how many lenses they contain. They vary from 2 to 90 lenses. You can search for your lenses based on the what type your eye doctor prescribed for you. Ex: daily, monthy, bi-weekly, extended wear or coloured.