Lens for myopic eye
AssigneeBrien Holden Vision Institute Limited
InventorsPadmaja Rajagopal Sankaridurg, Cathleen Fedtke, Leslie Alan Donovan, Earl Leo Smith, III, Arthur Ho, Brien Anthony Holden
Life of this patent
Estimating the term…
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AssigneeBrien Holden Vision Institute Limited
InventorsPadmaja Rajagopal Sankaridurg, Cathleen Fedtke, Leslie Alan Donovan, Earl Leo Smith, III, Arthur Ho, Brien Anthony Holden
Estimating the term…
An ophthalmic lens element includes an upper distance viewing zone and a lower near viewing zone. The upper distance viewing zone includes a central region with a first refractive power for clear distance vision and peripheral regions that are relatively positive in power compared to the first refractive power. The lower near viewing zone has a central region that is relatively positive in power compared to the first refractive power to account for accommodative lag. The powers of the peripheral regions of the lower near viewing zone are one of: i) equal to the power of the central region of the lower near viewing zone, ii) relatively positive in comparison to the power of the central region of the lower near viewing zone.
An ophthalmic lens comprising:
A method of manufacturing an ophthalmic lens comprising:
Dependencies are inferred from the claim text.