Brooklyn McCasland, a 23-year-old woman, lost vision in one eye after contracting a rare parasitic infection, acanthamoeba keratitis (AK), while swimming with contact lenses. Initially misdiagnosed, the infection worsened, causing severe pain. Treatment, available only in the UK, is ongoing, but her recovery remains uncertain. McCasland's case highlights the risks associated with contact lens use, particularly while swimming.
