My eye had to be sewn shut after a parasite ate my cornea – the crucial mistake I made

From a Simple Slip to Vision Loss: The Risks of Contact Lens Hygiene

The February Incident and Escalation

The sequence of events began on February 28, 2026. While Marsden was cleaning out horse stables, she took a tumble, landing headfirst into a wheelbarrow filled with dirt and water. According to accounts provided to The Mirror and The Sun, Marsden immediately washed the mud from her hands and face. However, she did not remove her contact lenses until later that evening—a decision described as the “fatal mistake” that triggered the infection.

Four days after the fall, Marsden began to experience stinging in her right eye. The pain quickly escalated, becoming what she described as “excruciating.” As reported by The Sun, the pain was so severe that any time light hit her eye, she could not keep it open. Initially, Marsden visited her GP and was referred to a hospital. When initial tests there came back clear, doctors concluded she had an ulcer and discharged her with prescription eye drops. Over the subsequent days, however, her condition worsened significantly, and she eventually lost all vision in the affected eye.

Diagnosis and Clinical Context

Following an appointment with a hospital consultant on March 7, 2026, the medical reality of her condition became clear. Marsden was diagnosed with acanthamoeba keratitis, a rare eye infection caused by a parasite burrowing into her cornea. Medics also found she was suffering from fusarium keratitis, a severe fungal infection of the cornea, alongside corneal ulcers.

According to the reports, acanthamoeba is a microscopic organism commonly found in tap water, swimming pools, and other bodies of water. The clinical data suggests that at least 90 percent of cases of this rare infection occur in contact lens wearers. Medics told Marsden they believed she contracted the infection by washing her face while still wearing her contact lenses, allowing the contaminated water to interact with the lenses and her cornea.

Impact and Current Status

The severity of the infection forced Marsden to quit her job. The physical toll was substantial, leaving even her doctors shocked by what they discovered during their examinations. To manage the infection and attempt to salvage the eye, the clinical team was forced to sew her eyelid shut.

Marsden is now speaking out about the innocent mistake that led to her horrifying ordeal, hoping that by sharing her story, she can help others avoid the same fate. Her case highlights the critical, often underestimated, risks associated with routine activities like washing one’s face while wearing contact lenses.

Recommendations for Contact Lens Wearers

While the provided sources document the specific circumstances of Marsden’s case, those who wear contact lenses should be aware of the risks posed by exposure to water. The infection cycle described—where a common environmental organism enters the eye through water and is trapped by a lens—is a documented hazard for wearers.

If you wear contact lenses, it is essential to consult with a qualified optician or healthcare professional regarding proper hygiene and to strictly follow guidance on when to remove your lenses. Readers should not conclude that all eye irritation is the result of a parasite, but persistent, “excruciating” pain, light sensitivity, or sudden vision loss following exposure to dirt or water requires immediate professional medical evaluation.

Marsden’s experience serves as a reminder that what may seem like a harmless daily habit can have life-altering consequences. Her story underscores the necessity of adhering to professional eye-care guidance to prevent the introduction of pathogens to the delicate surface of the eye.