What type of accidents can cause retinal detachment in both eyes?

What type of accidents can cause retinal detachment in both eyes?
I am writing a story, and I would like to know what accidents (preferably sporting injuries) can lead to sudden permanent blindness in both eyes. The character it happens to, if it makes a difference, is a teenage girl. I have looked into retinal detachment, but that seems to occur over time. This is my first question, so I don’t know how this works, but I would love a good answer.
Published on March 22, 2010 · Filed under: Eye care; Tagged as: accidents, both, cause, detachment, Eyes, retinal, type
2 Comments

Jeremy said on March 22nd, 2010 at 7:58 pm

I’ve had my retina partially detacked and had lazer surgery to correct it. I use to play baseball and softball. Getting hit in the head with balls, bats, all sorts of stuff can cause it. Just really getting hit in the head really hard. It doesn’t all tear at once. It takes a long time. I guess unless you get hit like super hard. Several of the times with the batting cage accidents were right on the side of my head and knocked me out cold.
Ben N said on March 22nd, 2010 at 8:43 pm

my doctor told me to avoid bungee jumping. roller coaster is risky too if it’s steep. basically any sudden jerks to your head.
sports, hmmm.. perhaps gymnastics?