A similar lens, called Sensimed Triggerfish, has received regulatory approval in the United States and Japan. This lens can monitor changes in intraocular pressure throughout the day, and can responsively release drugs to alleviate the glaucoma. The continuous monitoring provided by the contact lens could come in handy for people suffering from glaucoma. A thin capacitor embedded within the contact lens correlates changes in shape to variations in intraocular pressure.
As this happens, the contact lens undergoes commensurate change in shape. The prototype is based on the fact that the shape of the eyeball varies in response to changes in intraocular pressure. Researchers at the Hong Kong University of Science and Technology have developed a prototype of a contact lens that continuously monitors changes in intraocular pressure, the pressure within the eyeball. And now, research bringing together chemistry, biology and microelectronics is resulting in contact lenses that are straight out of science fiction. Over the years, new scientific discoveries have led to softer and more comfortable contact lenses. This finding eventually led to the creation of hard intraocular lenses for the treatment of cataracts. Ophthalmologist Harold Ridley noticed that despite acrylic plastic shrapnel shards becoming embedded in the eyes of fighter pilots, it did not appear to cause any harm.
Contact lenses are the result of an accidental discovery made during the Second World War.
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