What’s the Difference Between Scleral Lenses and Standard Contact Lenses?

Choosing the right contact lenses isn’t always as simple as picking a brand or replacement schedule. While traditional soft and gas-permeable lenses work well for many people, others require a more customized solution to achieve clear, comfortable vision. Scleral lenses are a specialty option designed for patients with unique eye conditions or ongoing discomfort with standard contacts.

What Are Standard Contact Lenses?

Standard contact lenses are the soft or rigid lenses most people are familiar with. They sit directly on the cornea (the clear front surface of your eye) and move slightly with each blink.

Types of Standard Contacts:

• Soft contact lenses - Flexible and comfortable for most wearers
• Daily, bi-weekly, or monthly lenses - Based on replacement schedule
• Toric lenses - Designed for astigmatism
• Rigid gas permeable (RGP) lenses - Smaller, firmer lenses for crisp vision

These lenses work well for people with common vision conditions like nearsightedness, farsightedness, and mild to moderate astigmatism.

What Are Scleral Lenses?

Scleral lenses are larger, specialty gas-permeable lenses that vault over the entire cornea and rest on the sclera (the white part of the eye). Instead of sitting directly on the cornea, they create a fluid-filled chamber between the lens and the eye’s surface. This unique design makes scleral lenses very different from standard contacts in both structure and function.

Size and Fit

One of the most noticeable differences between standard contact lenses and scleral lenses is their size and how they sit on the eye. Standard lenses are smaller and rest directly on the cornea.

In contrast, scleral lenses have a larger diameter and vault over the cornea entirely, resting on the sclera-the white part of the eye. Because scleral lenses do not make direct contact with the cornea, they are often more comfortable for individuals with sensitive or irregular corneas.

Comfort Level

Soft contact lenses are typically comfortable for people with healthy eyes. However, individuals who experience dry eye, corneal irregularities, or ongoing discomfort with traditional lenses may find them challenging to wear for extended periods.

Scleral lenses are designed to enhance comfort by maintaining a constant layer of moisture over the cornea, reducing friction from blinking, and shielding the eye’s surface from environmental irritants. Patients with chronic dry eye or certain corneal conditions often report significantly improved comfort with scleral lenses compared to standard contacts.

Vision Correction Capabilities

Standard contact lenses effectively correct common refractive errors such as nearsightedness (myopia), farsightedness (hyperopia), astigmatism, and presbyopia.

However, scleral lenses are typically recommended for more complex vision needs. These may include conditions such as keratoconus, severe astigmatism, corneal scarring, post-surgical corneas (including after LASIK or corneal transplant), and severe dry eye disease. By creating a smooth optical surface over the cornea, scleral lenses can dramatically improve visual clarity in cases where glasses or traditional soft lenses do not provide adequate correction.

The Importance of a Professional Contact Lens Fitting

Proper measurements, corneal mapping, and personalized fitting are especially important when considering specialty lenses like scleral lenses. Our team uses advanced technology to assess your eye shape, tear film quality, and vision requirements to ensure the best possible fit and comfort.

Discover the Right Contact Lenses for You

While standard contact lenses are an excellent option for many people, they may not provide adequate comfort or vision correction for those with more complex eye conditions. Scleral lenses offer a highly specialized alternative designed to improve comfort, protect the eye’s surface, and deliver exceptional visual clarity.

Schedule your contact lens exam at Texas State Optical Mansfield and let us help you find the perfect contacts for your lifestyle and eyes. Visit our office in Mansfield, Texas, or call (682) 518-1177 to book an appointment today.