Changes in corneal mapping and modification of the axial length after retinal detachment surgery: a prospective study in 30 cases

Introduction: Scleral indentation is an essential time in conventional reti nal detachment surgery. It enables re-establishing retinal contact and to c ounterbalance vitreal tractions. It can be circular, segmental or radial. S ilicone materials are often used. Materials: In a prospective study, we followed up 30 eyes of patients who u nderwent retinal detachment surgery. We analyzed changes in corneal surface using differential map of the corneal (induced astigmatism, meridian axial deviation) and change in the axial length of the globe. Results and discussion: Follow-up examination showed corneal astigmatism: 2 .62 diopter (D) at one week, 2.37D at one month and 1.80D at 3 months. Corn eal axis meridians changed: 25 degrees at one week and 18.6 degrees at 2 mo nths. Axial length was also modified. We observed a lengthening: 1.7mm duri ng the first week which remained unchanged at 1.63 after 2 and 3 months. Th ese changes were studied according to the different techniques used in our study and were compared with results reported in the literature. Conclusion: We think that conventional retinal detachment surgery causes mo difications in refractis (induced astigmatism and axial lengthening).