Anderlfs
Active member

After my last post I decided to contact the GPO and they responded quickly. Some, like Kowa, never responded to me. Anyway, here's the answer:
Hello,
“Blackouts” as referenced is a very subjective term that occurs with unique individuals, which although it can occur, is very depended on the dynamics of the individuals facial structure. Blackouts can occur with any product that the users eyes get too close to the ocular lens. So if your facial structures brow is extended or restricted, or your eye socket are larger or smaller, or if your eyes are set further forward or restricted, all can affect the image creating “blackout” spots with the eyecups extended or turned down.
GPO 8x32’s products eye relief is 16mm, which should be more than enough to minimize this issue. The eyecups rotate for easy up and down. We unfortunately do not offer different eyecup lengths.
Depending where you buy them, most retailers return policy of new product is quite generous, so this should allow you to test them and return them if these items don’t work for your needs.
If you purchase the products on line at GPO-USA.com, we offer a no questions asked 100% money back satisfaction guarantee.
We hope this helps with your decision and thank you for considering GPO.
The GPO Team.