SCIENTIFIC POSTER_Vanessa Lemos

Purpose:

To evaluate the visual and structural outcomes of macular hole (MH) surgery and its correlation with base diameter, height and minimum linear diameter of MH.

Methods and Materials:

This retrospective study included a total of 44 eyes (41 patients) with idiopathic MH underwent pars plana vitrectomy, internal limiting membrane peeling and intraocular gas tamponade with a mininum follow-up period of 6 months. The best corrected visual acuity (BCVA) was assessed with the standard Snellen acuity chart, and base diameter, height and minimum linear diameter of MH with optical coherence tomography preoperatively and postoperatively.

Results:

Preoperative mean base-hole diameter was 970 ± 437 micrometers. MHs with base diameter less than 400 µm reached 100% success, base diameter 400-1000 µm reached 76.9 % and those with a base diameter greater than 1000 µm had a success rate of 56.3 %. Postoperative BCVA mean was 2/10 for MH with less than 400 µm, 4.3 / 10 for MH with 400-1000 µm and 2.1 / 10 for MH with greater than 1000 µm base-hole diameter.

Conclusions:

The preoperative evaluation of base diameter, height and minimum linear diameter of the MH contributes to predict anatomical and/or functional success in macular hole surgery. Success rate was higher in initial stages and in smaller base-hole diameters. The surgical success rate of 70.5 % deduced with the fact that about two thirds of cases were MH stage 4.