Spectacle lens and method of using a spectacle lens
AssigneesHoya Lens Thailand Ltd., The Hong Kong Polytechnic University
InventorsChi Ho To, Siu Yin Lam, Takashi Hatanaka, Yasutake Masuda
Life of this patent
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AssigneesHoya Lens Thailand Ltd., The Hong Kong Polytechnic University
InventorsChi Ho To, Siu Yin Lam, Takashi Hatanaka, Yasutake Masuda
Estimating the term…
A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.
A spectacle lens comprising:
A method of using a spectacle lens, the method comprising:
Dependencies are inferred from the claim text.