Scleral Lenses for Contact Lens Intolerance

Some patients cannot comfortably wear standard soft contact lenses, corneal gas-permeable lenses, or hybrid lenses because of dry eye, irregular corneas, allergies, lens movement, corneal sensitivity, or ocular surface disease. For selected patients, scleral lenses may offer a different fitting approach because they vault over the cornea and rest on the sclera.

Dr. Edward Boshnick evaluates contact lens intolerance by identifying why previous lenses failed. The answer may involve tear film instability, corneal shape, eyelid disease, lens fit, solution sensitivity, allergy, or an underlying condition such as keratoconus, dry eye disease, corneal scarring, or post-surgical irregularity.

What contact lens intolerance can feel like

• burning, stinging, or foreign body sensation
• redness after a few hours of wear
• dryness or fluctuating vision
• lens awareness or pain
• poor vision despite multiple lens trials
• difficulty wearing lenses in wind, air conditioning, or screen-heavy environments
• mucus, allergies, or lens deposits
• frequent lens movement or decentration

Why standard contact lenses may fail

Standard contact lenses sit on or near the cornea. If the cornea is irregular, dry, sensitive, scarred, or surgically altered, the lens may move poorly, create irritation, or fail to provide clear vision. Soft lenses can also drape over an irregular surface, leaving distortion uncorrected.

Contact lens intolerance is not one diagnosis. It is a sign that something about the eye, lens, surface, solution, or wearing environment needs to be understood more carefully.

How scleral lenses may help selected patients

• Corneal vaulting: the lens is designed to clear the cornea rather than sit directly on the most sensitive tissue.
• Fluid reservoir: preservative-free saline beneath the lens may support comfort during wear.
• Stable fit: the larger diameter may reduce movement and lens awareness for some patients.
• Improved optics: a rigid front surface may help mask irregular astigmatism or corneal distortion.

Scleral lenses do not eliminate every cause of contact lens intolerance. Some patients need dry eye treatment, allergy management, lid therapy, solution changes, or medical care before lens wear can be successful.

Conditions often connected to contact lens intolerance

• dry eye disease
• ocular surface disease
• keratoconus
• irregular cornea or corneal ectasia
• post-LASIK or post-RK complications
• corneal scarring or transplant history
• allergies or giant papillary conjunctivitis
• solution sensitivity or deposits

Dr. Boshnick’s evaluation process

The evaluation may include a detailed lens history, corneal imaging, tear film assessment, eyelid and ocular surface evaluation, refraction, and diagnostic scleral lens fitting. The goal is to determine whether scleral lenses are appropriate and what design features are needed.

Frequently asked questions

Can scleral lenses help if soft contacts are uncomfortable?

They may help selected patients, especially when discomfort is related to dry eye, ocular surface disease, or corneal irregularity. A complete evaluation is needed to identify the reason for intolerance.

Can scleral lenses help if gas-permeable lenses move or hurt?

They may help some patients because scleral lenses rest on the sclera and vault over the cornea, rather than relying on close alignment with the corneal surface.

Are scleral lenses always comfortable?

No lens is comfortable for every patient. Comfort depends on ocular surface health, lens design, handling, wearing time, and follow-up refinements.

Related Eye Freedom resources

• Scleral lenses
• Scleral lens FAQ
• Scleral lenses for dry eye
• Scleral lenses for irregular cornea
• Request an evaluation

Medical sources

• American Academy of Ophthalmology: Update on Scleral Lenses
• Mayo Clinic: Scleral Contact Lenses
• Peer-reviewed review: Scleral lens indications and outcomes
• PubMed: Scleral Lenses in Irregular Corneas

This page is educational and is not a diagnosis or treatment plan. A specialty examination is needed to determine whether scleral lenses are appropriate for contact lens intolerance.