SlideLens® is an outstanding new patent-pending technology only available from Eyejusters that has the power to change vision correction for hundreds of millions of people worldwide.

We've ensured optical clarity and day-long wearing comfort, as well as being able to be adjusted to fit the spherical prescriptions of hundreds of millions of people.

All of this is possible thanks to our custom-built software and measuring equipment. From mathematical optics modelling through to nanometre-scale surface measurement systems, we take full control of the design and manufacturing process to ensure the best possible performance. Precision control of each stage of the manufacturing allows us to maintain the accuracy of the lenses.

People need glasses when their eyes have a condition called refractive error, which is caused when the eye or the lens inside the eye is the wrong shape.

People who need reading glasses suffer from presbyopia, a condition that we all get as we get older. It is caused by the lens in the eye becoming harder and being unable to change shape to focus on near objects. By adding a positive power lens in front of the eye a person with presbyopia can focus light rays from nearby objects onto the back of their eye once again.

Each SlideLens is a pair of lenses with a special shape that you are able to see if you hold the lens on its side and reflect light from the surface. When these lenses are slid across each other (left-to-right), their combined shapes act as if they were one lens with a changing spherical surface. See the diagrams above or try it out on the demo lens at the top of the page.

The advantages of using sliding adjustable plastic lenses are easy to see - durability, reliability, aesthetics and low cost. SlideLens beats existing liquid-filled adjustable lens technology by allowing us to create durable, simple self-adjustable glasses that are as close as possible to normal glasses, boosting long-term uptake and acceptance.

Find out more details about how a SlideLens works →