Blank selection alias is a means by which a lab can indicate that blanks of a different lens style and/or different material should be selected for a job. This can be used for toric jobs, and is often used for digital jobs where the vendor does not enforce selection themselves.
The top frame shows what products should be considered, and what they should be aliased to. When an order uses the lens style and material on the left, lenses with the lens style and material on the right will also be considered during blank selection. In this example about, Rx-Universe will consider ST28 lenses in material K when an order is entered for ST28 lenses in material 7. If the Alias Manufacturer field is set, this would restrict the K,ST28 lenses to the specified manufacturer.
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Match L/R Group - if alias is used to switch between different progressives, for example, setting this option to "Y" will cause both lenses to be the same type (the same group).
Same VendorManufacturer - checking this requires the blanks for both eyes to be from the same vendormanufacturer.
Same Size - checking this requires the blanks that are selected to both be the same size
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