Goalball is open to athletes with a visual impairment:

B1: Total absence of perception of the light in both eyes, or some perception of the light but with inability to recognize the form of a hand at any distance and in any direction.

B2: From the ability to recognize the form of a hand to a visual acuity of 2/60 and/or a visual field of less than 5 degrees.

B3: From a visual acuity of above 2/60 to a visual acuity of 6/60 and/or a visual field or more than 5 degrees and less than 20 degrees.

All classifications must be made by measuring the best eye and to the highest possible correction. This means that all athletes who use contact lenses or correcting glasses normally must wear them during classification, whether or not they intend to use them during competition.

(BOCOG)