“…In order to establish a guideline for treatment, many authors have searched for a correlation between the degree of anisometropia and the severity of amblyopia. This correlation has been verified in many studies but, unfortunately, not by all authors (Caputo et al, 2001;Copps, 1944;De Vries, 1985;Hardman-Lea et al, 1989;Helveston, 1966;Ingram, 1977;Jampolsky et al, 1955;Kivlin & Flynn, 1981;Kutschke et al, 1991;Sen, 1980Sen, , 1982Sjöstrand & Abrahamsson, 1990;Townshend et al, 1993;Vital-Durand & Ayzac, 1996;Weakley, 2001). Moreover, many studies have been conducted with experimentally-induced anisometropia.…”