Custom Contact Lenses for Irregular Astigmatism: What You Need to Know
Irregular astigmatism occurs when the cornea’s curvature is uneven in multiple directions, making it difficult for glasses or standard soft contact lenses to correct vision. At the Charlotte Contact Lens Institute, we specialize in advanced custom contact lens designs — including scleral lenses, freeform scleral lenses, and EyePrintPRO — to deliver the best possible comfort, fit, and clarity for these complex cases.
- What Causes Irregular Astigmatism?
Irregular astigmatism often results from:
- Keratoconus or pellucid marginal degeneration
- Post-surgical changes (LASIK, RK)
- Corneal scarring or trauma
- Post-corneal transplant complications
Unlike regular astigmatism, where the cornea has a symmetrical shape, irregular astigmatism involves unpredictable surface variations. This leads to visual problems such as distortion, ghosting, glare, and halos.
- Why Custom Contact Lenses Are the Gold Standard
Custom contact lenses — especially scleral lenses and EyePrintPRO — are the most effective solution because they vault over the cornea, creating a smooth new optical surface that neutralizes distortions.
At our clinic, we take customization a step further with freeform scleral lenses, which allow us to fine-tune every millimeter of the lens fit for optimal vision and comfort.
- Advanced Technology for Precision
We use the latest diagnostic imaging tools to ensure the highest level of customization:
- Pentacam AXL Wave – full corneal tomography, elevation mapping, and higher-order aberration analysis
- Scleral topography / profilometry – for precise mapping of scleral contours
- Wavefront aberrometry – to detect subtle distortions beyond the reach of glasses or standard contacts
- Who Is a Candidate?
You may benefit from custom contact lenses if you have:
- Keratoconus or pellucid marginal degeneration
- Post-LASIK ectasia or post-RK distortions
- Corneal transplant or corneal scarring
- Irregular astigmatism from injury or disease
Severe dry eye or intolerance to traditional contact lenses
- Frequently Asked Questions
Can glasses fix irregular astigmatism?
Are scleral lenses comfortable?
How long do custom scleral lenses last?
With proper care, they typically last 2–3 years.