Research conducted by Moorfields Hospital has underscored the risk of developing acanthamoeba keratitis (AK), a severe eye infection, linked to wearing contact lenses in swimming pools, lakes, showers, and hot tubs. The infection can cause significant damage, potentially resulting in temporary or permanent vision loss.

Experts advise that simply wearing goggles over contact lenses does not provide sufficient protection. Instead, contact lens users should remove their lenses before entering water and opt for well-fitted prescription swimming goggles. Giles Edmonds, an optician and clinical services director at Specsavers, emphasized that everyone, regardless of contact lens use, should wear goggles when swimming. He also noted the heightened exposure to ultraviolet (UV) rays during outdoor swimming due to sunlight reflecting off water surfaces, recommending goggles with built-in UV protection.

In addition to protecting the eyes themselves, safeguarding the surrounding skin is crucial. The area around the eyes consists of thin, delicate skin, making it particularly susceptible to sun damage. Prolonged exposure to ultraviolet rays increases the risk of serious eye conditions such as cataracts and macular degeneration later in life, according to Edmonds. The British Skin Foundation has also reported that between 5 and 10 percent of skin cancers originate on the eyelids.

To reduce these risks, specialists highlight the importance of wearing sunglasses, particularly wraparound styles that offer broader coverage, and complementing them with wide-brimmed hats for added protection. However, they caution that sunscreen application around the eyes is often neglected. Research published in 2019 in the journal PLOS One found sunscreen coverage on eyelids is 14 percent lower when using traditional sunscreen and 21 percent lower with SPF-containing moisturizers, suggesting that this area is frequently underprotected.

Additionally, environmental factors encountered during travel and holidays may contribute to eye discomfort. Dry air inside airplanes, low humidity, artificial lighting, and air-conditioned hotel rooms can exacerbate dry eyes. Dehydration, often worsened by alcohol consumption, particularly at poolside, may further aggravate symptoms.

To address these issues, Edmonds recommends the use of preservative-free lubricating eye drops and maintaining good hydration by drinking plenty of water. He also advises avoiding excessively dry or smoky environments while on holiday to help preserve eye health.