We had jets back in the 90’s flying all over the country.
Sept 11 2001 was a crystal clear day.
Crystal clear skies used to happen frequently.
Past 2-3 years, never had one all year.
Coincidence ?
Always a high-level haze ? Always ? Every day ?
So jets did not used to cause daily high-alt haze...
but now they do.
Contrails used to not cause haze, but now contrails cause haze.
Odd.
And it was even clearer in the days after that. With all the non-military jets shut down there were very few high altitude contrails. http://www.pbs.org/wgbh/nova/space/contrail-effect.html has some interesting pictures of both normal days and 9/12/2001 where you can pick out Air Force One and its escorts (after you dig through the usual global warming stuff).
You probably should get checked for Cataracts.