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Corneal Topography

by | 3 Nov 2022 | Eye Health, Eye Technology, Eye Tests, News

We use a Medmont Meridia for advanced corneal topography. It captures high-end interior images and videos of the front of the eye. It also provides enhanced Meibography imaging for a dry eye evaluation. This instrument provides a larger field of view and proven composite map technology. So, it gives us clarity and confidence in a successful rigid contact lens fit.

What is corneal topography?

Corneal topography, also known as photokeratoscopy or videokeratography, is a non-invasive, painless medical imaging system for mapping the front curvature of the eye (cornea). It’s similar to the three-dimensional mapping of landscapes, where topography helps identify features like mountains and valleys.

Furthermore, it is also used for imaging the outer parts of the eye such as the eyelids and tear glands. Corneal topography only takes a few seconds.

Why do I need corneal topography?

The cornea (clear front window of your eye) is responsible for most (around 70%) of the eye’s focusing power. Therefore, its topography is of critical importance in assessing the quality of your vision and corneal health.

A three-dimensional map is therefore a valuable tool to the optometrist. It can assist in the diagnosis and treatment of a number of conditions.

What can photokeratoscopy do?

We’ll use this technology to fit contact lenses better, by analyzing thousands of points covering the front of your eye. It is also useful in planning for and evaluating the results of eye surgeries such as cataract surgery and refractive eye surgery.

In summary, the main advantages of our corneal topographer are:

Image quality

High-resolution digital, colour images and video of the front of the eye enable better diagnostic capabilities.

Scleral contact lenses

Scleral contact lens simulation enables better, more accurate fitting and therefore fewer visits to us.

Rigid contact lenses

Corneal topography provides detailed front-of-eye measurements. Ours will analyze over 100,000 points. So, all types of rigid contact lenses, including ortho-k lenses and scleral lenses can be manufactured to a more accurate fit to your individual eye.

Dry eye syndrome

Meibomian gland imaging, tear meniscus height, and evidence-based dry eye assessment

Diagnosis of eye conditions

Fluorescein imaging and the ability to find distortions in the curvature of your cornea (which is normally smooth) helps our optometrists monitor eye conditions such as scarring, growths such as pterygia, astigmatism, and keratoconus. It is also useful in monitoring corneal transplants and corneal cross-linking.

Noosa Optical

Suite 2 & 3 Noosa Professional Centre
1 Lanyana Way
Noosa Heads QLD 4567

Opening hours:

Monday - Friday | 9:00am - 5:00pm

We're closed for weekends and public holidays.