Lens Technical Committees
The standards process serves as a critical foundation for everyone in the optical community. The Vision Council has nine active technical committees and task forces, maintained under either the Lens Division or the Lens Processing & Technology Division, which are charged with developing standards for ophthalmic optics. The committees are composed a group of experts who volunteer to write standards that pertain to lenses, frames and optical laboratories and discuss issues including frame manufacturing, standards for lens development and communication tools.
These standards address the safety and quality of our members' products, as well as help level the playing field between competing businesses, optical laboratories and lens and frame suppliers nationally and internationally. Some examples of the standards that have been written through the technical committees include the Data Communication Standard and the Country of Origin for Lenses Standard. The committees have also addressed important industry issues, such as the Lens Impact Resistance guidelines. For a complete review of available standards, visit the Standards section of the website.
Committees and task forces that operate under the Lens Division:
Lens Technical Committee
The Lens Technical Committee (LTC) is a forum open to members of The Vision Council who deal with any technical issue pertaining to the manufacture, marketing or distribution of spectacle lenses globally. When needed, the LTC can request division leadership to form task forces or committees to study lens issues in further detail. Regular participants must be members The Vision Council and discussions are directed toward areas of benefit to improving this field for all of industry.
Lens Product Description Standard Committee (LPDS)
Formerly part of the LDS Unified Task Force which included the Lens Description Standard Task Force (LDS) and Lens Marking Task Force, the Lens Product Description Standard (LPDS) Committee was formed to expand the current industry standard to incorporate newer technical features of lenses not supported under the existing standards. This restructured group is addressing the need for an industry wide data file structure for communicating lens design information to Lab Management Systems and other data consuming applications.
The resultant standard document is intended to expand the capabilities of the communication medium for the technical attributes of lenses and will eventually supersede the current Lens Description Standard. The purpose of this voluntary standard is to provide consistent methods and nomenclatures for describing the specifications and attributes of finished lenses, semi-finished lens blanks, and direct surfaced spectacle lenses as supplied by a vendor. The standard also provides a consistent and precise method for describing the geometry of non-spherical lens surfaces, including aspheric and progressive lens surfaces, to ensure accurate control of lens thickness during processing. It will include processing options and data requirements as well as all technical features of a lens including base curve charts and ranges as well as treatment applications and compatibilities.
Lens Marking 2.0 - Laser Committee
Reporting jointly to the Lens Processing and Technology Division and the Lens Division leadership, the Lens Marking 2.0 - Laser committee was formed to create a reference tool for the location and placement of all content information and the readability of that content for both visible and semi visible permanent markings on spectacle lenses. The guidelines created by this group are intended to maximize the accuracy of the automated and manual lens positioning equipment and the reading of those markings when used during the lab processing operation.
Additionally, these guidelines will ensure the accurate verification of the lens design for both the production and retail environments and to allow for wearer understanding and acceptance.
The group is comprised of lens suppliers, equipment suppliers and labs.
Mass Lens Manufacturing Committee
The Mass Lens Manufacturing Committee was formed with the intention of providing a forum for mass manufacturers of finished and semi-finished lenses to discuss, share and confide common manufacturing issues and solutions. Group resources and knowledge are dedicated to conceive, test and confirm ideas on many manufacturing questions including lens abrasion, impact resistance, lens transmittance and more.
AR Steering Committee
The mission of The Vision Council AR Steering Committee is to drive the 100 percent usage of anti-reflective lenses and assist optical professionals by providing educational material and programs. Recently, the AR Steering Committee was involved with commissioning a clinical study analyzing antireflective (AR) and non-AR lens performance during contrast sensitivity testing and daily activities. The study looked objectively and subjectively at the reduction of glare, increased acuity, and increase in contrast sensitivity when wearing AR lenses vs. non-AR lenses. A whitepaper summarizing the findings of the study is available to members of The Vision Council, and can be downloaded from the Lens Division page.