What are the symptoms of a mask squeeze?

Mask squeeze occurs when there is a pressure difference between the air inside a diving mask and the water pressure outside the mask as a diver descends. As a diver goes deeper underwater, the water pressure increases, but if the mask is not equalized, the higher external pressure can cause the mask to compress against the face.

The symptoms of mask squeeze primarily involve physical trauma to the face, specifically around the eyes and nose. This can manifest as red or bloodshot eyes, facial cuts, bruises, pain, and even bleeding as the capillaries around the eyes can rupture due to the pressure difference. These symptoms are signs that the mask has not been properly equalized, leading to significant discomfort and potential injury.

Understanding mask squeeze is crucial for divers to ensure they recognize the signs early and take necessary actions to equalize the pressure, preventing more severe complications.