Cyclic Esotropia: a Case Report

In this case report, two cases with diagnosis of cyclic esotropia are presented. Both patients complained of periodic alternative inside eye deviation with an interval of one day. Paraclinical tests including magnetic resonance imaging (MRI) of the brain and electroretinogram (ERG) were normal and no neurological abnormality or paralysis was detected. Patients were observed in two consecutive days to confirm the diagnosis of cyclic esotropia. Both patients underwent bilateral medial rectus recession surgery as routinely performed for non-cyclic esotropic patients, and the postoperative orthotropia with the best corrected visual acuity (BCVA) of 20/20 was obtained in both cases. In conclusion surgical and non-surgical treatments can be used for cyclic esotropia similar to what is routinely performed for non-cyclic strabismic patients. Successful therapeutic outcomes might be obtained in such patients achieving normal binocular fusion in several days with no ocular deviation.