Once the pre lens mold assembly is filled and closed, while applying a holding pressure to stably close {TAIL ~ the mold assembly} and maintain the shape of the pre lens cavity, the first optical material in {HEAD ~ the mold assembly} is polymerized or crosslinked to form a pre lens having the contour of the pre lens mold cavity 
Once the pre lens mold assembly is filled and closed , while applying a holding pressure to stably close { TAIL ~ the mold assembly } and maintain the shape of the pre lens cavity , the first optical material in { HEAD ~ the mold assembly } is polymerized or crosslinked to form a pre lens having the contour of the pre lens mold cavity
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