Abstract

DO.04.03

Spectral OCT evaluation after vitrectomy for lamellar macular holes.

Zofia Michalewska, Janusz Michalewski, Jerzy Nawrocki

Klinika Okulistyczna "Jasne Blonia", Lodz, Poland

Objective
To evaluate postoperative results after vitrectomy in lamellar macular hole. Additionally to determine factors influencing postoperative outcome after vitrectomy for lamellar macular holes
Methods
20 eyes of 20 subjects with lamellar macular hole were included into the study. Spectral OCT examination was performed before surgery and during the follow-up (6-30 months). Pars plana vitrectomy with ERM removal and ILM peeling was performed. Air was injected in 3 cases. During pre and postoperative evaluation additionally visual acuity, tonometry and biomocroscopy were performed. Central retinal thickness, number, area and volume of cystoids spaces were measured. Additionally photoreceptor defects and presence of epiretinal membranes were evaluated.
Results
Mean preoperative visual acuity was 0,21. Central retinal thickness before surgery was 148µm. The upper diameter of the lamellar defect was 670µm and the base defect diameter was 1338µm. Photoreceptor defects were noted in 5 cases. Epiretinal membranes and cystoid spaces were present in all cases. After surgery mean visual acuity improved to 0,54. Visual acuity remained stable in one case and improved in 17 cases. Factors determining postoperative visual acuity include preoperative visual acuity and photoreceptor defects. Neither central retinal thickness nor the diameter of the lamellar defect nor the amount of cystoid spaces have influence on visual acuity. After surgery foveal contour remained slightly deteriorated in 11/20 cases. Epiretinal membranes were successfully removed in all cases.
Conclusions

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