Experiencing a contact lens that feels “lost” behind the eye can be an alarming sensation for many. This common worry often leads to the misconception that the lens has somehow slipped into an unreachable part of the eye. Despite the discomfort and foreign body sensation, it is anatomically impossible for a contact lens to truly go behind your eyeball. The eye’s natural structure provides a protective barrier, ensuring the lens always remains on the front surface of your eye or under the eyelid.
The Eye’s Protective Barrier
The primary reason a contact lens cannot travel behind your eye is due to a thin, moist membrane called the conjunctiva. This continuous mucous membrane lines the inner surface of your eyelids and then folds back to cover the white part of your eyeball, known as the sclera. This anatomical arrangement creates a natural barrier, forming a cul-de-sac or pocket that prevents any foreign object, including a contact lens, from migrating to the back of the eye.
The conjunctiva also plays a role in keeping the eye moist and lubricated through the production of mucus and tears, which are part of the tear film. This lubrication helps the eyelids move smoothly over the eyeball and protects the eye from debris and microorganisms.
Where the Contact Lens Really Goes
When a contact lens feels “lost” or stuck, it typically has not vanished but has simply moved from its central position on the cornea. Common scenarios involve the lens folding in half, slipping under the upper or lower eyelid, or shifting to the side of the eye. This displacement can occur if the eye becomes dry, if you rub your eyes vigorously, or if the lens is not inserted correctly.
These off-center positions can cause various uncomfortable sensations, such as a foreign body sensation (feeling like something is in your eye), irritation, or a gritty feeling. You might also experience redness, excessive tearing, or blurred vision. These symptoms arise from the lens being in an unusual spot, not because it is truly out of reach or “behind” the eye.
Safe Removal Techniques
If a contact lens becomes dislodged, remaining calm is important, as panicking can make removal more challenging. Follow these steps for safe removal:
- Wash your hands thoroughly with soap and water to prevent introducing bacteria.
- Locate the lens by looking in a mirror under good lighting.
- Dislodge the lens by looking in different directions; for instance, look down if it’s under the upper eyelid.
- Gently massage your closed eyelid to encourage the lens to move towards the center.
- Apply rewetting drops or sterile saline solution to lubricate and rehydrate the lens, making it easier to maneuver.
- Once visible, gently slide the lens towards the center of your eye with a clean finger and then pinch it out as usual.
When to Seek Professional Help
While most dislodged contact lenses can be removed safely at home, there are situations when professional medical attention is necessary. Consult an eye care professional if:
- You are unable to remove the lens after repeated attempts.
- Persistent pain, redness, or irritation occurs after lens removal, potentially indicating a corneal abrasion or injury.
- Changes in vision, such as blurriness or increased light sensitivity, persist after removal.
- Signs of a possible eye infection, including discharge, swelling, or worsening pain, are present.
- You suspect a piece of the lens has broken off and remains in your eye.
- You have a rigid gas-permeable lens stuck.