Blog Hero

How Do Overnight Vision Correction Lenses Work?

Book Appointment
A medical diagram explaining Orthokeratology (Ortho-K), showing how overnight vision correction lenses flatten the cornea to correct excessive curvature.

Imagine waking up, opening your eyes, and seeing the world clearly without fumbling for your glasses or putting in daytime contacts. At Vivid Eye Care, this experience is possible with a vision solution you wear while you sleep, letting you move through your day with visual freedom.

These specialty lenses work overnight to gently and temporarily reshape the front surface of your eye, so you can enjoy clear vision all day long. They offer a different approach to vision correction that fits right into your nightly routine.

What Are Overnight Vision Correction Lenses?

Overnight vision correction lenses, often called ortho-k lenses, are specially designed contact lenses that you wear only at night. Unlike regular contacts you wear during the day, these lenses do their work while you’re asleep. Their main job is to temporarily reshape the cornea—the clear front surface of your eye.

A Custom Fit for Your Eyes

Each lens is made just for your unique eye shape. An eye doctor uses a special instrument to map the surface of your cornea. This detailed map helps create a lens that fits your eye with precision, which helps the reshaping process work correctly.

How They Feel

Because they are firm lenses, you might notice them in your eyes at first. However, since you wear them while your eyes are closed for sleep, most people adapt to the feeling very quickly and rest comfortably through the night.

The Gentle Science of Cornea Reshape

The process behind overnight vision correction is straightforward. The lenses apply gentle pressure to the cornea, which subtly changes its shape. This change is what corrects your vision, allowing you to see clearly the next day after you remove the lenses.

How the Reshape Happens

The specially designed lenses create a light, comfortable pressure that flattens the central part of your cornea. This flattening changes how light enters your eye and focuses on the retina—the light-sensitive tissue at the back of your eye. For nearsightedness, this helps light focus correctly, resulting in clear distance vision.

A Temporary and Reversible Solution

The effect of the lenses is not permanent. If you stop wearing them at night, your cornea gradually returns to its original shape over a few days. Your vision then goes back to how it was before. This makes it a flexible option for your vision correction.

Who Can Benefit from Overnight Lenses?

Overnight vision correction can be a convenient option for many people, from children to adults. It is particularly popular with individuals who find daytime glasses or contacts get in the way of their lifestyle. A consultation with an eye doctor in Cranston Market and Meadows Mile can help determine if this is a suitable choice for you.

  • Children and teens: These lenses are frequently used as an option to help manage the progression of nearsightedness in younger people.
  • Active adults: If you enjoy sports, swimming, or work in dusty environments, going without daytime eyewear can be a huge plus.
  • People with dry eyes: Since you don’t wear them during the day, these lenses can be a comfortable alternative for those who experience dry eye symptoms with traditional contacts.
A child undergoing a professional eye exam to determine eligibility for overnight vision correction lenses (Orthokeratology).

The Process to Get Your Custom Lenses

Getting started with overnight lenses involves a few key steps with the eye care team. The process helps the lenses fit your eyes and vision needs correctly.

  1. A detailed eye health exam: The first step is a comprehensive eye exam. This includes creating a precise map of your cornea’s surface, with a test known as a corneal topography map.
  2. Your custom lens fit: Using your eye map, the team designs your custom lenses. You have a fitting appointment to learn how to insert, remove, and care for them.
  3. Scheduled follow-up visits: You’ll have regular check-ins with your eye doctor. These appointments help monitor your eye health and the effectiveness of the lenses.

What to Expect on Your Journey to Clear Vision

Adjusting to overnight lenses is a process, but the result can be the freedom of clear daytime vision. Knowing what to expect can help make the transition smooth and successful.

Your First Few Weeks

You may notice a significant improvement in your vision after just the first night. For most people, it can take 1–2 weeks of consistent nightly wear to achieve stable, clear vision that lasts throughout the entire day.

Care and Cleanliness

Proper hygiene helps protect your eye health. You need to clean and disinfect your lenses every day after you remove them. Our eye care team provides detailed instructions on how to keep your lenses clean.

Enjoy a New Visual Freedom

Once your vision has stabilized, you can enjoy life without the daily hassle of glasses or contacts. If you’re curious to learn more, the first step is to speak with an eye doctor in Cranston Market and Meadows Mile. Our team at Vivid Eye Care is ready to answer your questions and explore if overnight lenses are right for you.

Visit Our Locations!

Cranston Market

Our Cranston Market clinic is part of the Cranston Market Clinic and is just 2 minutes off Deerfoot Trail near Stoney Trail SE. We’re located on Cranston Road SE, located in the same plaza as Sobeys and Scotiabank.

Our Address

  • 356 Cranston Road SE Unit 1020
  • Calgary, AB T3M 0S9

Contact Information

Meadows Mile

Meadows Mile clinic is located on the ground level of the Meadows Miles Professional Building facing Blackfoot Trail. We are just 2 minutes from Deerfoot and Glenmore Trail between Southland and Heritage Drives, up the hill from Ikea near the luxury car dealerships.

Our Address

  • 8500 Blackfoot Trail SE Unit 130
  • Calgary, AB T2J 7E1

Contact Information

Explore Our Brands

instagram facebook facebook2 pinterest twitter google-plus google linkedin2 yelp youtube phone location calendar share2 link star-full star star-half chevron-right chevron-left chevron-down chevron-up envelope fax