Not even half the number of the patients included in this study (N = 46) had been noticed as intermittent. Diplopia (N = 5) is not a reliable criterium. They need surgery with comparatively large amounts, on which behalf we prefer bi-medial rectus recessions. The prevailing result is "subnormal binocular vision," not to be confused with microtropia. Only four patients reached a cure, which means that they could not be differentiated from unaffected individuals any more.