Spider venom in the eyes can cause blur vision,
Brown_recluse_spider bite 724 884 1830 3260 sq 3000-8 Hz
and insect bites and stings in general,
Bites and Stings 550 780 7250 (sq 5000 8516 9750 2105 7526-3 9257-1) Hz
Combining,
Black Widow Spider, Bites and Stings
Brown Recluse Spider, Bites And Stings
Brown Recluse Spiders are very common; at the ceilings of water tanks for example. Cob webs have spider venom lace on it.
Good night.
