sag

(redirected from sagittal depth)
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References in periodicals archive ?
The sagittal depth of the lens is emerging as a more suitable parameter for controlling the fit due to being a better comparator between different lens designs, rather than BOZR and TD.
Instead it is more relevant to start thinking in terms of sagittal depth.
This is because the steeper skirt radius adds sagittal depth and will help lift the RGP/soft junction off the cornea so that landing occurs at the soft skirt.