To report a case in which Perflurocarbone ( DK-Line ) residuals changed the injected silicon oil specific gravity soon.

A 46 year-old man was referred to the clinic due to the right eye pseudophakic rhegmatogenous retinal detachment since 5 days ago.

: At the presentation the vision was hand motion perception in the right eye. Funduscopy revealed nearly- total, macular involving retinal detachment with large superior retinal break and multiple peripheral small breaks. The left eye examinations were within normal limit. Two days later he was experienced pars plana vitrectomy with DK-Line injection and endolasering. During air-fluid exchange the retina slipped significantly, so DK-Line – silicon oil 5700 exchange was performed for him, trying to evacuate the DK-Line completely. One month later the vision had improved to 1/10, but it seemed that some DK-Line has not been completely removed from the eye. Retina was attached. Trying to lessen the DK-Line-induced retinal toxicity, he was scheduled for silicon oil, DK-Line removal. During the second surgery it was seen that the silicon oil specific gravity had changed completely to a denser- than- water liquid, necessitating deeply removal. The DK-Line removed too

intraocular remained DK-Line could change the light silicon oil density, necessitating deep removal and emphasizing another reason for complete DK-Line removal.