Contribution to the Investigation Macular Function for the Surgical Treatment of Idiopathic Macular Holes
Abstract
We evaluate annual anatomical and functional results of standard 20G pars plana vitrectomy for idiopathic macular hole, with peeling MLI (membrana limitans interna) and instillation of gas tamponade (20% SF6 - sulfur hexafluoride) The observed group consisted of 32 eyes of 32 patients (3 men and 29 women), mean age 69 years (range 59-76). Anatomical results: the primary closure of the IMD occurred in 29 (90%), the IMD was not closed, but it's edges were flattened in 2 eyes (6%), and once time the edges of the IMD were not flattened (3%).
Functional results: After one year of operations the visual acuity improved by 2 or more lines in 27 eyes (84%), of 3 or more lines in 18 eyes (56%), and 4 or more lines in 5 eyes (16%). In PERG amplitudes (N95) there was not found statistically significant difference between the values before surgery and 12 months after.
Statistically significant difference (improvement) was found in the first and the second central ring of the MfERG. Improvement involved the values of P1 wave amplitude before surgery and 12 months after (Wilcoxon p {0.01).
Due to the favorable anatomical and functional results we consider surgical treatment of macular holes through PPV with peeling MLI as a safe technique.