Wearing contact lenses should feel easy and natural, but even experienced wearers occasionally run into small hiccups. One common issue? Realizing a lens is inside out after you’ve already put it in. It’s a minor mistake, but it can cause noticeable discomfort and affect how clearly you see.
An inside-out lens often has a slightly flared edge instead of a smooth, rounded shape. That subtle difference can affect how the lens fits and feels. A few simple checks can help confirm your lenses are positioned correctly and support clear, comfortable vision every day.
How Should Contact Lenses Fit?
Contact lenses are designed to rest comfortably on the surface of your eye, providing sharp vision without irritation or dryness throughout the day. When fitted properly, you shouldn’t feel them at all. But if a lens is flipped, even the right prescription can feel uncomfortable or cause blurry vision.
Fortunately, it’s easy to check your lenses before inserting them, and just as simple to correct if something feels off.
Are Contact Lenses Reversible?
Yes—most soft contact lenses are flexible and can be turned right-side out if needed. These lenses are made for comfort but can flip during cleaning, storage, or handling. A quick check before insertion can help avoid discomfort or poor alignment.
Why Proper Handling Matters
Taking a moment to check your contact lenses before putting them in isn’t just about comfort; it also helps protect your eye health. Folding, flipping, or over-handling lenses can increase the chance of small tears or contamination, which can lead to irritation or infection.
Clean hands, proper storage, and quick checks are simple steps that support clearer vision and healthier eyes overall.
How to Tell if a Lens Is Inside Out

If you’re not sure whether your contact lens is the right way around, try one of these easy techniques:
Check the Shape
Place the lens on the tip of your index finger with the edge facing upward. Look closely at its profile:
- Correct orientation: The lens forms a smooth, bowl-like shape.
- Inside out: The edges flare outward slightly, forming a lip or rim.
Good lighting, such as a nearby window or bright lamp, can help make this easier to see.
Look for Markings
Many contact lenses include small laser-etched numbers or letters near the edge.
- Hold the lens up to a light source.
- If the characters appear reversed, the lens is likely inside out.
- Flip it and check again—when correctly oriented, the markings should read normally.
This is especially helpful if the shape test is unclear.
Try the Taco Test
Another option is the “taco test,” which works well when you’re in a hurry:
- Gently pinch the lens between your thumb and forefinger, like folding a taco shell.
- If the orientation is correct, the edges will curve inward toward one another.
- If it is inside out, the edges will flare outward or feel stiff.
This method is quick and easy to use wherever you are.
Signs Your Contact Lens Is Inside Out
Even after inserting your lens, certain signs can suggest it may be flipped:
- Discomfort or irritation: A gritty or dry sensation may indicate an inside-out lens.
- Blurred or inconsistent vision: If your sight isn’t as clear as expected, the lens might be misaligned.
- Constant awareness: If you notice the lens throughout the day, it may not be sitting correctly.
- Movement on the eye: A lens that shifts easily may be positioned incorrectly.
- Cloudy or obstructed vision: Misalignment can prevent the lens from settling properly on your eye.
If you notice any of these issues, it’s a good idea to remove the lens, check it, and try again.
How to Remove a Stubborn Contact Lens
If your lens feels uncomfortable or is difficult to remove, try the following steps:
- Wash your hands: Clean, dry hands help avoid introducing bacteria or debris.
- Use rewetting drops: Lubricating drops can loosen a stuck lens gently and safely.
- Look up and slide the lens: Gently pull down your lower eyelid, look upward, and move the lens toward the white part of your eye.
- Pinch gently: Once in position, lightly pinch the lens between your thumb and forefinger to remove it.
Avoid using fingernails or tools. If the lens doesn’t come out easily, add more drops and try again after a short break. If you’re still unsure or having difficulty, visit your optometrist for in-person support.
Finding Contact Lenses That Fit Just Right
The right contact lenses should offer clarity and comfort throughout your day. Since every pair of eyes is different, a proper fitting helps your lenses work with both your vision and your lifestyle.
We tailor each contact lens exam to your individual needs, considering everything from eye shape to how you spend your time. Whether you’re new to contacts or exploring other options, we’re here to help you see clearly and comfortably.
Book an eye exam at one of our Eye Q Optometry clinics to get started with a fitting that puts your comfort first.
We have 4 convenient locations: Calgary, Olds, Sundre, and Carstairs. Click any location to book your appointment today.