Correlation between corneal tomography and postphacoemulsification positive dysphotopsia

Abstract

ObjectivesThe aim was to compare between patients who have positive dysphotopsia after uncomplicated phacoemulsification surgery and those who do not have regarding their corneal tomographic findings.BackgroundDysphotopsia is a disturbance of vision and includes light phenomena such as haloes, the subjective perception of a bright ring around a light source. It occurs owing to optical nonconformities in the optical path such as cataract or optical boundaries.Patients and methodsThis is a prospective interventional study that was conducted for 1 year on 20 patients with acquired cataracts. Preoperative corneal tomography and visual assessment were carried out, and then postoperative periodic follow-up for 6 months was done with clinical and visual assessment for dysphotopsia.ResultsThis study shows that 40% of eyes (eight eyes) had higher order aberration with preoperative positive dysphotopsia and 60% of eyes (12 eyes) showed no higher order aberration with no preoperative positive dysphotopsia. Postoperative assessment of positive dysphotopsia showed that patients with no higher order aberrations complained of positive dysphotopsia and patients with higher order aberrations complained of positive dysphotopsia but more severe than before.ConclusionThis study concluded that there is a correlation between corneal tomography and postphacoemulsification positive dysphotopsia, which affects visual satisfaction of patients after phacoemulsification surgery.