Invision Biomedical's ophthalmic lens design and prototyping facility uses cryogenic lathing and milling technology to produce intraocular and contact lenses in a 5-step process. The process begins with circular acrylic blanks that are frozen to mandrels before being cut into lenses using a precision lathe and mill. The blanks have their optics and haptics shaped in sub-zero temperatures and are then polished and packaged as finished intraocular lenses.