What to Expect at a Scleral Lens Fitting

A scleral lens fitting is different from picking up a box of contacts. Because each lens is customized to your eye, the process takes a few visits and a bit of teamwork. Knowing what’s coming makes it far less intimidating — here’s exactly what to expect.

Before your appointment

If you currently wear contacts, your doctor may ask you to leave them out for a period beforehand so your corneas return to their natural shape. Bring your current glasses or lens information, a list of medications, and any records from prior eye care or surgery. If you’d like to understand whether you’re a fit before you start, read who is a good candidate for scleral lenses.

Step 1: Corneal mapping and evaluation

The fitting begins with a careful health check and detailed imaging of the front of your eye. Corneal topography or a scan measures the precise shape of your cornea and sclera. This map is what allows a lens to be selected and customized to vault your cornea correctly rather than press on it.

Step 2: Trial lenses and vault assessment

Using your measurements, your doctor places trial lenses on the eye and evaluates how they sit. A key goal is the right amount of “vault” — the clearance between the back of the lens and your cornea — along with how the edge lands on the sclera. Your doctor checks the fluid reservoir for the proper depth and looks for any bubbles or areas of pressure, then fine-tunes the lens parameters. You’ll also read an eye chart so the prescription can be dialed in.

Step 3: Learning to insert and remove your lenses

Handling sclerals is a learned skill, and almost everyone feels clumsy at first — that’s completely normal. Your team will teach you to fill the lens with preservative-free saline, place it without trapping an air bubble, and remove it gently at night. Most people are comfortable with the routine within a few days of practice. We’ve written a dedicated walkthrough in how to insert and remove scleral lenses.

Step 4: Follow-up visits and fine-tuning

Once your custom lenses are ordered and arrive, you’ll return to confirm the fit, comfort, and vision while wearing them. Complex eyes — keratoconus, post-transplant, or severely dry eyes — sometimes need one or more refinements to perfect the lens. This is expected and is part of getting the result right, not a sign that anything is wrong.

How long does the whole process take?

Every eye is different, but a typical fitting spans a few appointments over several weeks, including the time for custom lenses to be manufactured. Adapting to all-day wear is usually quick once the fit is right; we describe the first couple of weeks in are scleral lenses comfortable?

The goal

The point of all this care is a lens that disappears on your eye and gives you the clearest, most comfortable vision your eyes can achieve. For many patients with irregular corneas, that’s a result they hadn’t thought was still possible.