| http://www.w3.org/ns/prov#value | - This is known in the art. [0005] It is also known in the art that it is possible to correct presbyopia by fitting each eye with an ophthalmic lens, i.e. a contact lens or an intraocular implant, and that there are various solutions to enable the wearer to see clearly an object at any distance, whether that object is near, far away or at an intermediate distance. [0006] In particular, there are len
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