An interesting experience in the practice recently reminded me that changes in technology require reassessment of advice to patients.
Contact lenses have changed enormously since the first clinically successful corneal contact lens was developed more than 75 years ago. Early rigid lenses gradually improved in both materials and design, but for many wearers, awareness of the lens beneath the eyelids could make adaptation difficult. The arrival of larger soft contact lenses was therefore a major advance, providing almost immediate comfort.
Today, soft contact lenses are an excellent option for millions of people. Modern designs can correct many prescriptions, including astigmatism, while daily disposable lenses provide the convenience and hygiene of a fresh lens each day.
But does that mean we should forget about rigid gas-permeable (RGP) lenses?
Recently, I saw three patients over just two days who had successfully worn RGP lenses for more than 30 years. Their experience was a timely reminder of just how effective these lenses can be when they are properly fitted.
RGP lenses can provide exceptionally clear, stable vision for a range of refractive errors including complex conditions eg keratoconus. Modern corneal mapping technology also allows us to measure the shape of the eye with remarkable accuracy, while advances in computerised design and manufacturing can produce highly customised lenses.
There can be another benefit: longevity. While most soft lenses are replaced daily, a well-maintained RGP lens may remain serviceable for considerably longer, providing a significant cost saving.
Contact lenses should never be a one-size-fits-all product. The best lens is the one that suits your own unique eyes, prescription, lifestyle and visual needs.
With budgets under pressure, a significant number of patients could benefit from this paramount contact lens.
