The authors describe a case of traumatic retinal dialysis with retinal
detachment from a water balloon slingshot during a ''water balloon wa
r.'' A 31-year-old woman presented with decreased visual acuity in her
right eye 2 days after being hit by a water balloon. The visual acuit
y in the right eye was counting fingers and fundus examination showed
subtotal retinal detachment secondary to a superonasal dialysis. The p
atient underwent a scleral buckling procedure with external drainage,
and at 18 months visual acuity was stable at 20/50 with attached retin
a. Water balloon eye injuries can result in permanent visual loss. Mor
e public awareness needs to be created regarding the potential harmful
effects of this commonly used ''toy.''.