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Cornea

When Your Eyes Feel Dry, Irritated, or Harder to See Through 

The cornea affects both comfort and clarity; and when it’s irritated or unstable, everyday tasks like reading, screen use, or wearing contact lenses can feel frustrating. 

Many patients come after years of dry eye, blurry vision, or treatments that didn’t work. Our focus is long-term relief; not short-term fixes. 

Common Concerns

What to Expect

Your first cornea visit will take about 2–3 hours so we can give your eyes the attention they need.

During your visit:

  • Full eye exam, including pupil dilation if needed
  • Advanced corneal imaging and preliminary tests
  • Consultation with a cornea specialist to review results
  • Discussion of your treatment plan and, if needed, same-day procedures (e.g. minor procedure)
  • We explain every step and answer all questions so you feel comfortable and informed.
Contact Us For Questions

Your Cornea Testing, Explained

Before seeing the doctor, our technicians perform quick, painless tests to give a close look at your cornea’s health.

Tests may include:

These tests help your doctor create the most accurate treatment plan.

  • Corneal Topography: Maps the surface shape of your cornea for keratoconus or refractive planning (OHIP/Private depending on test)
  • Pachymetry: Measures corneal thickness for surgical planning or disease monitoring
  • Specular Microscopy: Evaluates corneal endothelial cells for overall cornea health
  • Other Specialized Imaging: Depending on your condition, additional non-OHIP tests may be recommended
Learn More About Cornea Testing

How to Prepare for Your Visit

A few simple steps will make your visit smooth and stress-free:

  • Avoid contact lenses for 24 hours 
  • Bring prior prescriptions
  • List products or drops you’ve tried 
  • Fill out new patient forms below
Download New Patient Forms

How Prism Approaches Corneal Care 

We tailor treatment based on your eye surface, lifestyle, and symptom severity; focusing on lasting comfort and vision stability. 

When to book

  • Persistent dryness or irritation 
  • Blurry vision not helped by glasses 
  • Contact lens discomfort 

Frequently Asked Questions

 Some of the most common include:

  • Dry eye disease
  • Keratoconus (thinning or bulging of the cornea)
  • Corneal dystrophies (inherited conditions)
  • Infections or ulcers
  • Scarring from trauma or contact lens overuse

Common signs include blurred or distorted vision, eye pain, redness, excessive tearing, light sensitivity, or a feeling of something in your eye.

Specialized tests such as corneal topography, pachymetry, slit-lamp examination, and OCT imaging are used to evaluate corneal shape, thickness, and clarity.

If left untreated, yes — certain diseases like severe infections or advanced keratoconus can lead to scarring and vision loss. Early detection and treatment are key.

Treatment depends on the cause and may include lubricating drops, prescription medication, special contact lenses, cross-linking therapy, or in severe cases, a corneal transplant.

Keratoconus is not “curable,” but it can be managed effectively. Talk to your eye doctor about the options.

Only if they’re worn too long, not cleaned properly, or not fitted correctly. Always follow your eye doctor’s care instructions and replace lenses as recommended.

  • Practice good contact lens hygiene.
  • Use protective eyewear during sports or hazardous work.
  • Keep eyes lubricated if they’re dry.
  • Have regular eye exams, especially if you have allergies, wear contacts, or have family history of corneal disease.

 You should book an appointment immediately if you experience pain, sudden vision changes, light sensitivity, or persistent redness, as these can indicate corneal injury or infection.

Talk to your optometrist if you do not currently have a cornea specialist, or contact us to see one of our dedicated optometrists.

Cornea Doctors

Joshua C. Teichman, MD
Joshua C. Teichman, MD
Nima Noordeh, MD, MSc, FRCSC
Nima Noordeh, MD, MSc, FRCSC
Our Locations

Brampton

Brampton
7700 Hurontario Street, Unit 605
Brampton, Ontario  L6Y 4M3

905.456.3937
Mon. - Fri. 8:00AM – 5:00PM
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Mississauga-Oakville

Mississauga-Oakville
2201 Bristol Circle, Suite 100,
Oakville, Ontario L6H 0J8

905.456.3937
Mon. - Fri. 8:00AM – 5:00PM
Sat. 8:00AM – 4:00PM
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