Personally, I've never had a problem with Hoth. The planet doesn't cause my eyes any strain, rather I find the place rather pretty.
The new inventory UI does cause me eye strain, however. Quickly, my eyes start to feel sore. Then, if I need to keep the window open for a time (such as organizing the mess the new window made), I start getting a headache.
No, I don't know why Hoth doesn't bother my eyes but the inventory UI does, I only know my eyes hurt. And hurting eyes makes me not want to play, which makes me not want to maintain a subscription or buy Cartel Coins, which means less revenue for EA.