Multiple epiphyseal dysplasia, Beighton type is a skeletal dysplasia characterized by epiphyseal dysplasia (usually mild) associated with progressive myopia, retinal thinning, crenated cataracts, conductive deafness, and stubby digits.

Distance between the commissures of the mouth more than 2 SD below the mean. Alternatively, an apparently decreased width of the oral aperture (subjective).