I just had a nice conversation with the Essilor equipment department when I called about having a pupillometer repaired. The thing started acting funny and I could tell something was loose inside when you turned it on either side. I unscrewed it and looked inside and found the large magnifier lens unsecured in its holder- seems like a simple fix! After Essilor gave me a return address, I got back on the line to describe the issue and it turns out my $200 Ebay purchase is a knockoff- it does not have the name "Essilor Digital CRP" on the top and it uses 4 batteries, not two! BEWARE EVERYONE!
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