Not every eye is suited to every type of lens, and not every lens is suited to every eye. Fitting scleral lenses is not an automatic process like fitting regular glasses, but a much more personal and precise one—perhaps even a form of « custom-made » lenses. No two eyes are alike, and the scleral lens adapts precisely to each individual curvature and shape of the eye. Scleral lens technology has improved in recent years, allowing for even more precise customization.
So, how does it work? What is the adaptation process? Here’s everything you need to know.
Why scleral lenses?
Scleral lenses are an excellent solution for people with complex vision problems, such as corneal deformities or irregular corneas. Unlike ordinary contact lenses, scleral lenses rest on the white part of the eye (the sclera) and not on the cornea, allowing them to provide more stable support and compensate for eye deformities thanks to the fluid between the lens and the cornea.
Who is this suitable for? If you suffer from problems such as keratoconus, or if you have very sensitive, dry or irregular eyes, scleral lenses can be an excellent solution.
How does the process work in practice?
The first step is a thorough eye examination. The optometrist examines the visual problem and performs three-dimensional scans of the eye. At this stage, the optometrist also performs corneal topography, assesses tear quality, performs precise refraction including aberrations, and checks if any further adjustments are needed.
Next, advanced measurements come into play. Modern technology now makes it possible to measure every detail – from the curvature of the anterior cornea to the heights of the posterior cornea.
The next step is creating the lens itself. This lens is custom-made, taking into account the measurements and needs identified during the measurement stage. Sometimes, after the lens is created, further adjustments will be necessary to ensure a perfect fit.
How does this affect your vision?
When the lens fits your eye perfectly, you’ll feel the difference immediately. In most cases, users report an immediate improvement in visual acuity, along with a level of comfort they didn’t experience with ordinary lenses. Every contact of the lens with the eye feels natural, as if the lens had always been there.
If you have vision problems with corneal deformities, diseases affecting the anterior surface of the eye, or severe dryness, scleral lenses can significantly improve your vision. Every detail of the measurement is important, as each detail affects the quality of your vision.
Is a doctor’s prescription required?
To begin the process, you will need to consult an optometrist who specializes in fitting scleral lenses. You may not always be able to perform the examinations yourself—it’s a process that requires advanced equipment and considerable professional expertise. A specialist optometrist is the person who can help you achieve the perfect fit.
What are the next steps?
After receiving your lenses, there will be an adaptation period. Wearing time should be increased gradually. In addition, you will have regular follow-up appointments with your optometrist to ensure the lenses are properly fitted and that your eye health is protected.
How long does the process take?
The adaptation period varies from person to person. For some patients, the process takes a few weeks, for others – several months. This is because the adaptation is carried out in stages, and each stage requires an examination and feedback from the patient.
Maintenance and preservation of eye health
After receiving your fitted scleral lenses, you will need to ensure rigorous cleaning and maintenance. The cleaning instructions provided by your optometrist are extremely important. It is also essential to note any changes in sensation—redness, discomfort, or changes in vision—and inform your optometrist.
In summary
Fitting scleral lenses is a complex process that requires expertise. With proper fitting, scleral lenses can positively change your quality of life – allowing you to see clearly and comfortably, even in cases where other lenses have not been helpful.