To look for a review from outside of the manufacturer, try a Google search that includes:
"name of product" & the word review
examples: anti fog lenses review
NOTE: Pay close attention to the ending of the website address like .com, .org, etc.
Investigate who is really behind the website by looking under the "About" section.
Also do a separate search outside of the 1st website you find to get another opinion.
*Consider that these websites may be trying to sell you something & have bias towards certain products.
Librarians Top Picks - Try these databases first for finding company information:
Also Try These Databases: