Can A Contact Lens Go Behind Your Eye? | Fact vs. Fiction

Many contact lens wearers, or those considering them, share a common concern about a lens somehow disappearing into the back of their eye. This worry stems from the sensation of a dislodged lens, which can feel quite unsettling and lead to a natural misunderstanding of our eye’s intricate design.

The Eye’s Natural Barrier: Your Conjunctiva

The human eye is a marvel of natural engineering, equipped with built-in safeguards to protect its delicate structures. One of the most significant of these is the conjunctiva, a thin, transparent mucous membrane that lines the inner surface of your eyelids and covers the white part of your eyeball, known as the sclera.

Think of your conjunctiva like the sealed, protective lining inside a food container; it creates a continuous barrier. This membrane effectively forms a closed sac, preventing anything, including a contact lens, from slipping behind the eye itself. The conjunctiva folds back on itself where the eyelid meets the eyeball, creating a cul-de-sac that acts as a physical stop.

This anatomical arrangement ensures that any foreign object, whether it’s a speck of dust or a contact lens, can only travel as far as this fold. It simply cannot penetrate further into the orbital cavity where the eye sits.

Understanding the Anatomy of the Eye’s Surface

To truly grasp why a contact lens can’t go behind your eye, it helps to visualize the key components of the eye’s front surface. The cornea is the clear, dome-shaped front surface of the eye, responsible for focusing light. Surrounding the cornea is the sclera, the tough, white outer layer of the eyeball.

The conjunctiva has two main parts: the palpebral conjunctiva, which lines the inner surface of the eyelids, and the bulbar conjunctiva, which covers the sclera up to the edge of the cornea. These two parts meet and connect at the fornices, which are the deep folds where the eyelid conjunctiva reflects onto the eyeball conjunctiva. This continuous connection is the anatomical reason why a lens cannot get lost behind the eye.

This protective arrangement is a fundamental aspect of ocular health, ensuring that the eye remains a self-contained system. According to the National Eye Institute, the conjunctiva plays a vital role in protecting the eye from foreign bodies and infections, highlighting its importance as a physical barrier. You can learn more about eye anatomy and health at NEI.NIH.GOV.

Can A Contact Lens Go Behind Your Eye? — The Truth About Misplacement

While a contact lens cannot go behind your eye, it certainly can become dislodged or “lost” on the front surface of your eye. This is the source of the common misconception. When a lens feels like it has vanished, it’s almost always still on the eye’s surface, often folded, or has simply fallen out without you realizing it.

Common scenarios for a “lost” lens include it sliding up under the upper eyelid, down under the lower eyelid, or folding in half and clinging to the side of the eyeball. Sometimes, a lens can dry out, making it stick more firmly to the conjunctiva, which can intensify the feeling of it being deeply embedded.

The sensation of something being “behind” the eye is often a result of the lens irritating the sensitive conjunctiva in an unusual position. It’s similar to how a tiny crumb in your bed can feel like a boulder; the perception is magnified by the sensitivity of the area.

Common Contact Lens Misplacement Scenarios

Scenario	What it feels like	What to do
Slid under upper eyelid	Irritation, foreign body sensation, often worse when looking up.	Look down, gently massage upper lid, blink, use rewetting drops.
Slid under lower eyelid	Mild irritation, can be seen by gently pulling down the lower lid.	Look up, gently pull down lower lid, blink, use rewetting drops.
Folded or torn	Sharp irritation, blurred vision, lens feels “crumpled.”	Remove carefully if accessible; if not, use drops and try to unfold gently.
Dried out and stuck	Lens feels glued to the eye, discomfort, difficulty moving.	Apply several drops of rewetting solution, wait a few minutes for rehydration.

Safe Removal Techniques for Dislodged Lenses

When a contact lens feels misplaced, the first step is to remain calm and avoid rubbing your eye vigorously, as this can cause further irritation or even damage. Always wash your hands thoroughly with soap and water before touching your eyes or lenses to prevent introducing bacteria.

If the lens is under your upper eyelid, look down as far as you can. Gently massage your upper eyelid with your finger, moving it downwards towards your lash line. This can help dislodge the lens. Blinking several times can also help move it. For a lens under the lower eyelid, look up and gently pull your lower lid down to expose the lens.

Applying a few drops of sterile saline solution or rewetting drops can lubricate the eye and help float the lens into a more accessible position. Wait a minute or two after applying the drops before attempting removal again. The American Academy of Ophthalmology provides comprehensive guidelines for safe contact lens handling and care, emphasizing the importance of proper hygiene and technique, which you can review at AAO.ORG.

Do’s and Don’ts for Contact Lens Care

Do	Don’t	Why
Wash hands thoroughly with soap and water before handling lenses.	Use tap water or saliva to clean or store lenses.	Prevents infection; tap water contains microorganisms, saliva lacks sterility.
Use fresh, sterile contact lens solution daily.	“Top off” old solution in your lens case.	Ensures proper disinfection and prevents bacterial buildup.
Replace your lens case every 3 months.	Sleep in your contact lenses unless prescribed for extended wear.	Reduces risk of infection; sleeping in lenses significantly increases eye infection risk.
Follow your eye care professional’s prescribed wearing schedule.	Share contact lenses with anyone.	Maintains eye health; sharing lenses can transmit serious eye infections.

When to Seek Professional Eye Care

While most dislodged contact lenses can be safely removed at home, there are instances when professional medical attention is warranted. If you experience persistent irritation, redness, or pain after attempting to remove a lens, it’s time to contact your eye care professional. These symptoms could indicate that the lens is still present, or that your eye has been scratched or irritated.

Blurred vision that does not resolve, excessive tearing, or sensitivity to light are also signs that require an examination. If you suspect an eye infection, characterized by discharge, swelling, or worsening pain, seek immediate medical attention. Early intervention is key to preventing more serious complications and preserving your eye health.

Preventing Lens Misplacement and Eye Irritation

The best approach to dealing with a “lost” contact lens is to prevent it from happening in the first place. Consistent, proper contact lens care and handling techniques are paramount. Always insert and remove your lenses in a well-lit area, preferably over a clean, flat surface, so if a lens drops, it’s easy to find.

Ensure your hands are clean and dry when handling lenses, and use the correct insertion and removal methods demonstrated by your eye care specialist. Keeping your eyes adequately hydrated with rewetting drops, especially in dry environments or during prolonged screen use, can also prevent lenses from drying out and sticking. Never sleep in your contact lenses unless they are specifically prescribed for extended wear, as this practice significantly increases the risk of complications, including lens misplacement and infection.

Regular comprehensive eye exams are also essential. Your eye care professional can assess the fit of your lenses, ensuring they are appropriate for your eye shape and prescription, which minimizes the chances of them dislodging. They can also provide updated guidance on lens care and address any concerns you may have about your eye health.

Can A Contact Lens Go Behind Your Eye? — FAQs

Can a lens get stuck permanently behind my eye?

No, a contact lens cannot get stuck permanently behind your eye. The conjunctiva, a continuous membrane that lines your eyelids and covers the white part of your eye, forms a sealed barrier. This anatomical structure physically prevents any object, including a contact lens, from moving beyond the front surface of your eye and getting trapped in the orbital cavity.

Does a dried-out lens cause more problems?

Yes, a dried-out contact lens can cause more problems and discomfort. When a lens becomes dry, it can adhere more firmly to the surface of your eye, making it difficult to remove and potentially causing irritation or a feeling of being “stuck.” Rehydrating the eye with sterile rewetting drops before attempting removal is crucial to prevent further irritation or damage.

Is it okay to use tap water to rinse my eyes if a lens is stuck?

No, it is not okay to use tap water to rinse your eyes or contact lenses. Tap water, even if it seems clean, contains microorganisms like Acanthamoeba, which can cause severe and vision-threatening eye infections. Always use sterile saline solution or specific contact lens rewetting drops for rinsing your eyes or lenses.

How can I tell if my eye is just irritated or if there’s a lens in it?

If your eye is irritated, but you’re not sure if a lens is present, gently pull down your lower eyelid and look up, then pull up your upper eyelid and look down. Carefully check for the lens. If you can’t see it but still feel significant irritation, blurriness, or pain, it’s best to assume something is amiss and seek advice from your eye care professional.

What are the signs of an eye infection from a contact lens?

Signs of an eye infection from a contact lens can include persistent redness, significant pain or discomfort, excessive tearing, discharge (pus or mucus), increased sensitivity to light, and blurred vision. If you experience any of these symptoms, remove your contact lenses immediately and contact your eye care professional without delay to prevent serious complications.