<p>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.</p>
申请公布号
SG11201405687Q(A)
申请公布日期
2014.11.27
申请号
SG11201405687Q
申请日期
2013.03.14
申请人
BRIEN HOLDEN VISION INSTITUTE
发明人
SANKARIDURG, PADMAJA RAJAGOPAL;FEDTKE, CATHLEEN;DONOVAN, LESLIE ALAN;SMITH, EARL LEO III;HO, ARTHUR;HOLDEN, BRIEN ANTHONY