Q: What is the difference between LensWebShop and Prescription Contact Lens Configurator (http://www.magentocommerce.com/magento-connect/prescription-contact-lens-configurator.html) ?
A: The LensWebShop extension provides a lot of features like bulk import, pre-installed attributes set etc. The detailed features can be checked at http://www.magentocommerce.com/magento-connect/medma-lenswebshop.html.