LOD offers a number of tutorials; we will be adding more soon.  These tutorials will hopefully assist customers with some of the more common optical questions asked over the years.  Customers or anyone visiting the LOD tutorial page are welcome to copy and use this information freely. 

Please follow the link below to take you to LOD Tutorials.  This will open a separate tab to a WIX webpage.  LOD is in the process of updating their webpage and is testing the WIX page.  Please feel free to provide any feedback on which site you like better at


Click Here