Pars plana vitrectomy; Anterior segment; Osmolarity; Ocular surface disease; Tear film

The aim of our study was to assess changes of tear film osmolarity after micro-incision 25G+ pars plana vitrectomy (PPV) in a prospective study. The group consisted of 21 patients (17 women, 4 men) with an average age of 70,52years [48; 85]. All patients underwent 25G+PPV surgery due to a disorder of the vitreomacular interface (macular hole or epimacular membrane). Only patients who did not use artificial tears before the surgery and who had not been diagnosed with dry eye syndrome at ours or another institution were included in the study. Except cataract surgery, all ocular surface diseases, intraocular diseases, trauma or surgery were exclusion criterias.