Stock vs Custom Prosthetic Eye: Which One Do You Need?

If you or someone you love has lost an eye, you will soon hear two terms: stock and custom. The price gap between them is large, and the advice online can feel confusing. Some sites say stock eyes should never be used. Others sell them with no guidance at all.

The truth sits in the middle. Each type has a clear job. This guide explains the difference in plain words, so you can choose with confidence and talk with your eye care team about what fits your life.

What Is a Custom Prosthetic Eye?

A custom prosthetic eye is made for one person only. An ocularist, a specialist who makes and fits artificial eyes, takes an impression of your eye socket. From that mold, they shape an eye that sits snugly against your tissue. Then they hand-paint the iris and tiny blood vessels to match your other eye. Cleveland Clinic notes that this process often takes several visits, and that most experts strongly recommend a custom eye.

The American Society of Ocularists explains the main reason simply: a stock eye is not made for any one person, so it may not fit or match as well as a custom eye.

Benefits of a Custom Eye

• Better fit. The back of the eye follows the shape of your socket, which can help with comfort.
• Better match. The iris, white of the eye, and veins are painted to look like your other eye.
• More natural movement. A close fit often lets the eye move more in step with your other eye. A published case report describes how custom shaping improves fit, looks, and coordinated movement.
• Ongoing care. Your ocularist checks your socket, polishes the eye, and adjusts it over time.

What Is a Stock Prosthetic Eye?

A stock prosthetic eye (sometimes called a ready-made eye) is made in advance in standard sizes, shapes and iris colors. You choose the closest size, shade and side. Good stock eyes are made from the same medical-grade acrylic (PMMA) used for custom eyes, and quality ones have a hand-painted iris.

The American Academy of Ophthalmology's EyeWiki notes that stock eyes are also used in places where custom-fitted eyes are not available. For many people around the world, a stock eye is the only realistic option.

Stock vs Custom: Side-by-Side Comparison

For a full look at prices, including what insurance may cover, see our prosthetic eye cost guide and our V2623 insurance guide.

When a Custom Eye Is the Right Choice

Choose custom, and work with an ocularist, if any of these apply to you:

• This is your first eye after surgery. After eye removal, a clear plastic shell called a conformer holds the socket's shape while it heals. EyeWiki notes that fitting for a prosthesis usually starts after about 6 weeks. Your first eye should be fitted in person. Our conformer guide explains those first weeks.
• It will be your main, everyday eye. You wear it most of the day, so fit and comfort matter most.
• Your socket has an unusual shape from injury, scarring, or more than one surgery.
• It is for a child. Children's sockets grow, so they need regular checks and refits. The American Society of Ocularists suggests visits every 3 months for children under 3, and twice a year for children under 9.
• You have signs of a poor fit, such as ongoing redness, discharge, pain, or an eye that slips out.

When a Stock Eye Makes Sense

A stock eye is not a shortcut around good care. It is a useful tool in the right situations:

As a Spare or Backup Eye

Losing or breaking your only eye can be stressful. A spare means you are never without one. Many people keep a stock spare for travel, swimming, sports, or emergencies, or to wear while their custom eye is out for polishing. The American Society of Ocularists says an eye may need polishing as often as every six months, so a spare can be handy.

As a Replacement When You Know Your Specs

If an ocularist has already fitted you, you likely know your size, shade, and side. A stock eye in those specs can be a lower-cost option when your current eye is worn. Our guide to signs it is time to replace a prosthetic eye can help you decide.

When Custom Care Is Out of Reach

Cost, distance, or long wait times can make custom care hard to get. In these cases, a well-chosen stock eye can be much better than going without. Ask an eye doctor to check the fit if you can.

For Clinics and Ocularists

Some practices keep stock eyes on hand for trial fitting or short-term use. SciMed offers a 10-eye brown-shade inventory pack for this purpose.

How to Choose the Right Stock Eye

If a stock eye fits your situation, three details matter most:

1. Size. Use the size from your ocularist or your current eye. SciMed eyes come in 18, 20, 22, 24, 26 and 28 mm.
2. Shade. Compare against your other eye in natural daylight, not under bright or dim lights.
3. Side. Left and right eyes are shaped differently. Double-check before you order.

Our step-by-step iris color and size matching guide walks you through it.

Caring for Either Type

Stock and custom eyes are cared for the same way. Wash your hands before touching your eye. Clean it only the way your ocularist recommends, since the wrong cleaner can damage acrylic. Artificial tears can help with dryness. Call your eye care provider if you notice pain, swelling, a change in fit, or discharge that does not clear up. See our prosthetic eye care guide for a full routine.

Frequently Asked Questions

Is a stock prosthetic eye the same as a custom one?

No. A custom prosthetic eye is made by an ocularist from an impression of your own eye socket and painted to match your other eye. A stock prosthetic eye is made ahead of time in set sizes, shapes and colors. Custom eyes usually fit and match better.

Can I wear a stock prosthetic eye as my everyday eye?

Some people do, especially where custom care is hard to reach. But eye care experts generally recommend a custom-fitted eye for daily wear. If you use a stock eye, ask your ocularist or eye doctor to check the fit and watch for redness, discharge or pain.

Can I order a stock prosthetic eye for my first fitting?

We do not recommend it. After eye removal surgery, your socket needs time to heal and should be fitted by an ocularist or eye doctor. Once you know your size, shade and side from that fitting, a stock eye can work well as a spare or replacement.

Why would someone with a custom eye also buy a stock eye?

Many people keep a lower-cost spare for travel, sports, or emergencies, or to wear while their custom eye is being polished or remade. A spare means you are never without an eye if the main one is lost or damaged.

How much does a SciMed stock prosthetic eye cost?

A single SciMed prosthetic eye is $75. It comes in 13 shades, 6 sizes from 18 to 28 mm, and left or right. US shipping is a flat $4.99 by USPS on orders under $99 and free on orders of $99 or more.

The Bottom Line

Custom and stock eyes are not rivals. They work best together. A custom eye, fitted by an ocularist, is the gold standard for your everyday eye. A stock eye is a lower-cost way to keep a spare, replace a worn eye once you know your specs, or get by when custom care is out of reach. Talk with your ocularist or eye doctor about which plan is right for you.

This article is for general information and does not replace advice from your ocularist or eye doctor. Written by the SciMed Clinical Team.