Corneal topography to assist in the fitting of all types of contact lenses has been in use for decades.
In particular, at Ezekiel Eyes we use corneal topography in the diagnosis of conditions and diseases and to better fit your eyes.
There are two types of rigid contact lenses – Corneal gas permeable contact lenses and Scleral gas permeable contact lenses.
Corneal gas permeable lenses fit by landing on the cornea, the transparent tissue that sits over the iris part of our eyes.
Scleral gas permeable contact lenses fit by landing on the sclera, which is the white tissue surrounding the cornea.
At Ezekiel Eyes, we are privileged to be the only eyecare practice in Western Australia to have the Eaglet Scleral Topographer that allows us to map the unique curvature of scleral tissue.
The mapping provided by the Eaglet Scleral Topographer enables us to achieve customised gas permeable scleral contact lenses with a highly accurate fit.
While it’s no secret that scleral contact lenses can provide patients with significant visual benefits, fitting these lenses can be a steep learning curve.
With the emergence of new technologies, such as scleral topographers, the initial challenges are much easier to overcome, particularly for practitioners who are new to scleral lens fitting.
Even for experienced fitters, the use of these topography systems can provide many benefits.
Eye Surface Profiler (Eaglet-Eye)
This instrument is a scleral topographer from Eaglet-Eye.
Our Eaglet system has an accuracy of 10µm over the sclera (and 2µm to 3µm over the cornea).
Ideal candidates for gas permeable scleral lenses are patients with extreme eye conditions such as:
- Severe keratoconus
- Graft-vs-host disease
- Sjogren’s Syndrome
- Extreme dry eye
- Steven Johnsons Syndrome and
- Patients who have difficulty with their current corneal gas permeable lenses.
This image shows a scleral lens (dark centre) on top of the cornea (grey centre). We can measure the gap between the lens and cornea. This helps to get the best Scleral Lens fit.
This image shows a scleral lens (dark centre) resting on the white part of the eye. We can measure the ‘landing zone’ or area where the lens contacts this part of the eye. This helps to get the best Scleral Lens fit.
Scleral topographers can also be used in tandem with other instruments to create some truly unique contact lens designs, which further widens the breadth of what can be corrected.
We have been able to help thousands of scleral lens patients through this incredible technology.
We are so grateful to have this special technology in our office!
Book an appointment with our practice to see if you would be a good candidate for the Eaglet-Eye.