Tennis is a popular sport, but even a new can of tennis balls can pose an unexpected risk of injury. While these incidents are uncommon, they can occur due to the unique design of the packaging. Understanding the potential hazards associated with opening these cans can help individuals take precautions and respond appropriately if an injury happens.
Understanding the Injury Mechanism
New tennis balls are packaged in airtight, pressurized cans to maintain their internal pressure and ensure optimal bounce. The can is pressurized to around 14 pounds per square inch (psi), similar to the balls themselves.
When the can’s seal is broken, often with a distinct “pop,” the sudden release of this internal pressure can be forceful. This rapid expulsion of air can cause the plastic lid or other parts of the can to dislodge with enough velocity to cause harm.
Common Injury Types and Symptoms
Injuries from tennis ball cans primarily involve the hands and eyes. Fingers are particularly susceptible to cuts or lacerations from the sharp edges of the can or the foil seal when it tears unexpectedly. Symptoms of finger injuries can include immediate pain, bleeding, and swelling around the affected area. Damage to the nail bed is also possible.
Eye injuries, though less frequent, can be more severe. A dislodged plastic lid or a piece of the can propelled by the escaping pressure can strike the eye, leading to corneal abrasions or blunt trauma. Symptoms of an eye injury might include immediate pain, blurred vision, redness, sensitivity to light, or the sensation of something in the eye. Bleeding inside the eye, known as hyphema, or even a bruised retina are possible, which can lead to vision impairment if not addressed.
Immediate Steps and Medical Care
If a minor cut or scrape occurs, the first step is to wash your hands to prevent infection. Then, clean the wound by rinsing it under cool running water to remove any dirt or debris, avoiding harsh cleaners like hydrogen peroxide or iodine. Apply gentle, direct pressure with a clean cloth or gauze to stop any bleeding. Once bleeding has stopped, a thin layer of antibiotic ointment can be applied, and the wound should be covered with a sterile bandage to keep it clean.
Prompt medical attention is important for more serious injuries. Seek professional care if bleeding is persistent or heavy, if the cut is deep (a quarter-inch or more), has jagged edges, or if you can see fat or muscle. Any injury involving the eye, even if it seems minor, warrants immediate medical evaluation. Do not rub the injured eye, and apply a cold compress gently around the eye to reduce swelling without putting direct pressure on the eyeball.
Preventing Can-Related Injuries
Preventing injuries from tennis ball cans involves careful handling and awareness. When opening a new can, always point it away from your face and other people to avoid accidental impact from a dislodged lid or contents. Using two hands to maintain a firm grip on the can provides better control during the opening process. Some suggest using the plastic lid to help flick up the tab for the foil seal, which can make it easier and safer to remove.
Avoid using excessive force or teeth to open the can, as this can lead to sudden, uncontrolled release of pressure and increase the risk of injury. Supervise children when they open new tennis ball cans to ensure they follow safe practices.