Asunto(s)
Oftalmoplejía/etiología , Complicaciones Posoperatorias , Desprendimiento de Retina/cirugía , Potenciales de Acción , Adulto , Anciano , Criocirugía/efectos adversos , Humanos , Persona de Mediana Edad , Músculos Oculomotores/fisiopatología , Desprendimiento de Retina/fisiopatología , Curvatura de la Esclerótica/efectos adversos , Curvatura de la Esclerótica/métodos , Factores de TiempoRESUMEN
The present study is concerned with the specific nature and the multiformity of microtropia, which is characterized by unilateral convergent small angle (under 10delta) strabismus with amblyopia and abnormal retinal correspondence. Three types of microtropia may be distinguished: Type I: Showing a positive cover test, amblyopia and abnormal retinal correspondence. Type II: Showing in addition to the above, heterophoria. Type III: Showing a negative cover test, a positive 4delta base-out prism test, amblyopia due to anisometropia, eccentric fixation and harmonious abnormal retinal correspondence, where the angle of anomaly is equal to the angle to eccentricity. For the prevention of microtropia all children aged under 4 and irrespective of the presence of any symptoms should undergo an eye examination. At a more advanced age the diagnosis of this clinical entity is of importance chiefly from a prognostic point of view, because it permits us to avoid futile efforts at correcting visual acuity by means of covering up to sound eye.
Asunto(s)
Ambliopía/fisiopatología , Fijación Ocular , Estrabismo/fisiopatología , Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Estrabismo/clasificaciónRESUMEN
The aetiology of diplopia following retinal detachment surgery after the Lincoff-Custodis method is examined. Of 140 patients operated, 16 (i.e. 11.4%) developed diplopia. The authors believe that this diplopia is due to a fixation of the eyeball at the point of the silastic sponge placement. As responsible factors, which depend on the manner of sponge fixation and the size of the sponge, they regard: Alteration of the bulb curvature, shortening of the Tenon's capsule placed over the sponge, and changes in the conditions of muscular action.