Abstract: Disclosed herein are methods for quality control of contact lenses. An example method comprises receiving an input image indicative of a subject contact lens. The example method comprises outputting, based on analysis of the input image and using a first learning model, a first foreign matter metric and rejection data based on the analysis of the input image. The example method comprises outputting, using an artifact model and based on at least the rejection data, an artifact metric. The artifact model may be implemented based on one or more artifact attributes. The example method comprises outputting, using a second learning model and based at least on the first foreign matter metric and the artifact metric, a second foreign matter metric. The second learning model may be scale dependent. The second foreign matter metric is indicative of at least an accept or reject condition of the subject contact lens.

Abstract: A method for quality control of contact lens packages comprises receiving a first data set comprising a plurality of images of a contact lens package having physically implanted defects; receiving a second data set comprising a plurality of images of a contact lens package having digitally implanted defects; testing and training, on the first and second data set, a model to determine a validated one or more quality control models; capturing image data of a package of a contact lens; analyzing, based on the validated one or more quality control models, the image data; and causing, based on the analyzing, output of a quality control metric indicative of at least an accept or reject condition of the package.

Abstract: A problem exists of prohibitively high costs associated with molds for small run, legacy, or prototype injection molded parts. Further, the lead time on molds is currently on the order of about two weeks. A mold is provided that is formed from three-dimensional printing. The mold includes a series of air and/or water cooling channels to limit thermal stresses to the mold. Additionally, a series of coatings is added to the surface of a 3D printed mold to extend the lifetime of the mold and increase the performance of the mold. The coatings perform a function other than to define a shape of an injection cavity, such as improving thermal conductivity, providing a thermal barrier between the injection material and the mold body, or improving the detachment of the final mold product from the mold body.