1. Strabismus fixus;Villasecca;Am J Ohthalmol,1959
2. 2. Hayashi T, Maruo T. Acquired progressive esotropia and acquired strabismus fixus. Nippon Ganka Gakkai Zasshi 1999; 103: 604-11.
3. A case of fixed strabismus;Martinez;Am J Ophthal mol,1948
4. 4. Hugonnier R, Clayette-Hugonnier S, Veronneau-Troutman S. Strabismus, Heterophoria, Ocular motor paralysis, p:205. CV Mosby, St. Louis. 1969
5. 5. Aebli R. Retraction syndrome, Arch Ophthalmol.1933; 10:602=610.