Removal Of Heavy Silicone Oil Research Articles

FUNCTIONAL AND ANATOMICAL OUTCOMES AFTER SHORT-TERM HEAVY SILICONE OIL ENDOTAMPONADE FOR INFERIOR RHEGMATOGENOUS RETINAL REDETACHMENT: A Pilot Study.

To assess the success of the short-term location of the heavy silicone oil (Densiron 68, HSO) as endotamponade after pars plana vitrectomy for rhegmatogenous complex retinal redetachment. Consecutive, retrospective, nonrandomized, pilot study was conducted. Twenty-two eyes of 22 patients with complex inferior retinal redetachment previously tamponade with gas (SF6 or C3F8) or 1000 cSt standard silicone oil (SSO) were selected. All were treated with HSO endotamponade, and its removal was performed after 1 month. The main outcomes were best-corrected visual acuity and postoperative complications after the HSO removal. Of the 22 eyes, 10 were treated with SSO endotamponade, 3 with fluorinated gas 14% C3F8, and 9 with 20% SF6 at first surgery. In all eyes, a complex inferior retinal redetachment was observed after the first surgery, in 1 month to 3 months after silicone oil removal or gas endotamponade introduction. In 10 eyes, the proliferative vitreoretinopathy (Grade B or C 1-3) was found. The main best-corrected visual acuity before HSO removal was 0.55 ± 0.20 the logarithm of the minimum angle of resolution (range 0.4-0.7) and after the HSO removal, it was 0.32 ± 0.29 the logarithm of the minimum angle of resolution (0.1-0.4). Among the postoperative complications, only in four eyes the macular edema was found (medically resolved), in four eyes an increase of intraocular pressure, and none of these developed the epiretinal membrane. The main purpose of this study is to establish a short-term HSO endotamponade in eyes with complex retinal detachment recurrences, reducing the possible postoperative complications and having a better prognosis for visual acuity outcomes.

Evaluation of long-term outcomes associated with extended heavy-silicone oil use for the treatment of inferior retinal detachment

To evaluate macular status with optical coherence tomography (OCT) in eyes that underwent pars plana vitrectomy (PPV) and heavy-silicone oil (HSO) endotamponade for the treatment of rhegmatogenous retinal detachment (RRD) with inferior breaks. Twenty eyes of 20 patients who have RRD with inferior breaks included in the study. Oxane HD was used as an intraocular tamponade for all surgeries. Postoperatively, anatomic reattachment, macular status using OCT imaging, and any long-term complications were evaluated. The mean age was 60.4 ± 11.2 years (range, 37–83). The duration of HSO endotamponade was 15.3 ± 11.0 months (range, 6–48) with some postoperative complications such as HSO emulsification, intraocular pressure elevation, and epiretinal membrane (ERM) formation. Mean follow-up time was 19.5 ± 10.5 months (range, 10–59) after HSO removal or ERM surgery. Primary reattachment was achieved in 90% of eyes and the success rate was 100% with further interventions. Ellipsoid zone (EZ) was continuous in 13 of 20 eyes in which OCT imaging performed as well as the fellow eye. PPV and heavy-silicone oil injection for the treatment of eyes with RRD from inferior break(s) have a good long-term EZ continuity. ERM formation and its removal do not affect EZ.

OPTICAL COHERENCE TOMOGRAPHIC PATTERNS OF POSTERIOR SEGMENT STICKY HEAVY SILICONE OIL.

To describe unique optical coherence tomography observations of adherent preretinal heavy silicone oil after removal. Retrospective observational review of files and optical coherence tomography scans of patients who had pars plana vitrectomy with heavy silicone oil. We investigated the possible precipitating preoperative and intraoperative factors and the association with postoperative epiretinal membrane and cystoid macular edema. Forty-one eyes from 39 patients were involved. Two characteristic sticky silicone oil structures were identified in 33 patients (80%): variably reflective macrodroplets (bubbles) and hyperreflective microdroplets (dots). The main contributing variable was the tamponade duration. Other notable associations included postoperative epiretinal membrane and cystoid macular edema formation. Surgical interventions including heavy liquid did not show a strong predilection to their development. We reported two novel findings of sticky prefoveal macrodroplets in five patients and intravitreal macrodroplets and microdroplets casting shadows on the underlying retina in four patients. This study confirms previously reported optical coherence tomography observations of sticky emulsified silicone oil remnants after removal. This is the first report of two distinctly different optical coherence tomography appearances after heavy silicone oil removal. The variability in size and reflectivity may be attributed to the amount and nature of the induced inflammatory reaction.

The incidence of silicone oil-related visual loss following the removal of heavy silicone oil.

The incidence of silicone oil-related visual loss following the removal of heavy silicone oil.

Descemet Membrane Detachment After Heavy Silicone Oil Removal From the Anterior Chamber

The aim of this study was to report a case of a central Descemet membrane detachment after heavy silicone oil removal from the anterior chamber. This is a case report of a patient operated with scleral buckling and heavy silicone oil implantation for recurrent retinal detachment. In the patient's follow-up examination, silicone oil was found to completely fill the anterior chamber. He underwent silicone extraction through a paracentesis from the anterior chamber. Immediately after the surgery, a central Descemet membrane detachment combined with corneal edema was identified on slit-lamp examination, and confirmed by anterior segment optical coherence tomography. The detached Descemet membrane was tamponaded successfully with the air bubble injection technique. Four days later, the patient's cornea appeared to be clear, and the Descemet membrane was found to be attached to the corneal stroma with no presence of silicone oil in the anterior chamber. Descemet membrane detachment is a possible and rare complication that occurs after heavy silicone oil removal from the anterior chamber.

Clinical observations and occurrence of complications following heavy silicone oil surgery.

Purpose. To demonstrate development and complications in heavy silicone oil (HSO) surgery in 100 eyes following primary vitreoretinal surgery. Methods. 100 eyes were included in this retrospective study that underwent vitreoretinal surgery using HSO as endotamponade. Indication diagnoses were retinal detachments (n = 76), complicated macular holes (MH) (n = 20), and others (n = 4). HSO removal was performed after a mean period of 20.2 ± 19.0 weeks. In 18 eyes with poor functional prognosis the silicone oil remained permanently for stabilisation. Overall follow-up time was 35.9 ± 51.8 weeks. Results. The mean IOP before HSO surgery was 13.3 ± 5.6 mmHg and raised to an average maximum of 23.3 ± 8.5 mmHg postoperatively and decreased to 13.7 ± 7.2 mmHg after removal. Secondary IOP raise due to emulsification of the silicone oil endotamponade was seen in 29 eyes after 7.8 ± 4.5 weeks. Other complications being observed with HSO installed were persistent corneal erosion (n = 3) and prolonged anterior chamber inflammation (n = 29). In 13 eyes recurrent retinal detachments occurred during followup. Conclusions. According to our analysis HSO surgery might deliver satisfying results in complicated cases of ophthalmological surgery. However, potential complications should always be taken into account when making the decision if to use and when to remove HSO in complicated retinal surgery.

Heavy Silicone Oil Removal Without A Suction Pump: A Surgical Technique

Heavy Silicone Oil Removal Without A Suction Pump: A Surgical Technique

Heavy silicone oil tamponade after failed macular hole surgery with perfluoropropane (C3F8): a report of five cases

We report five cases of persistent macular holes following conventional surgery. Subsequent management included pars plana vitrectomy, extended Trypan Blue-assisted ILM peel and heavy silicone oil (HSO) tamponade with supine posture. To report results of redo macular hole surgery using heavy silicone oil (HSO) tamponade. Retrospective study of patients with primary failure of macular hole surgery, who failed to posture prone due to medical reasons. Further surgery consisted of vitrectomy, extended-dye-assisted ILM peel, and HSO tamponade with supine posture. Anatomical closure of macular holes was achieved in three out of five cases with parallel improvement in visual acuity after 3 months of removal of heavy silicone oil. These were confirmed clinically and by ocular coherence tomography (OCT). HSO may be used as tamponade in patients with unsuccessful primary macular-hole surgery, negating the need of prone posturing post-operatively.

Combined phacoemulsification and transpupillary removal of heavy silicone oil

We describe a technique for heavy silicone oil removal combined with phacoemulsification and intraocular lens insertion without scleral incisions or sutures using a modified 16-gauge cannula. The technique is less invasive than other techniques for removing silicone oil and does not interfere with the uveal tract or the peripheral retina.

A guide to the removal of heavy silicone oil

Aim:Heavy silicone oil removal can be challenging and differs considerably from conventional oil. Traditionally, strong active aspiration had to be applied through a long 18G needle just above the optic...