Pars plana (23 or 25 G) vitrectomy was performed with a Stellaris PC or Stellaris Elite platform (Bausch + Lomb; Laval, Canada) using retrobulbar anaesthesia. Preoperative ultrasound was performed in cases where visualisation of the fundus was limited. In cases without a posterior vitreous detachment, an attempt was made to induce one with the vitrector. Care was taken to evacuate pus and remove as much of the vitreous as possible whilst simultaneously being careful not to create iatrogenic retinal breaks. Shaving of the vitreous base was performed within the limits of the surgeon's ability to visualise the vitreoretinal interface. Pus in the anterior chamber was removed at the surgeon's discretion. Follow‐up procedures were performed later as needed once the inflammation was controlled.
Stellaris pc
Manufactured by Bausch & Lomb
Sourced in United States
The Stellaris PC is a surgical console designed for cataract and anterior segment procedures. It provides precise control and customization of surgical parameters to assist ophthalmologists during ocular procedures.
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Lab products found in correlation
8 protocols using stellaris pc
1
Pars Plana Vitrectomy for Endophthalmitis
2
Rabbit Model of Proliferative Vitreoretinopathy
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After sterilizing the eye with 5% iodine solution, 23-gauge trans pars plana vitrectomy (Stellaris PC, Bausch and Lomb, Irvine, CA) was performed4 (link),5 (link). Four retinotomies, of 500um (one third disc diameter) in size each were performed with a 41 gauge needle and bleb retinal detachments of 3–4 disc diameters were induced by injection of balanced salt solution at 4 separate sites in the inferior retina. Rabbits received an intravitreal injection, using a 25-gauge needle into the central vitreous, 4 mm behind the limbus of 0.1 ml platelet rich plasma (PRP). PRP was prepared from rabbit homologous blood according to the method of Constable et al.6 (link). Pooled arterial blood was collected from the rabbit’s ear artery into plastic tubes containing an anticoagulant solution (1 part 3.8% sodium citrate to 9 parts whole blood). This fresh citrated blood was centrifuged at 1,200 rotations per min for 10 min, and the upper third of the supernatant PRP was aspirated. Tobramycin eyedrops were instilled into the eye 4 times a day for 5 days after induction of PVR.
3
Anterior Vitrectomy and Scleral Fixation Protocols
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All surgical procedures were performed by one experienced surgeon (YE) under topical anesthesia with 0.5% proparacaine hydrochloride. Anterior vitrectomy was performed (Stellaris PC, Bausch & Lomb) to remove prolapsed vitreous from the anterior chamber, when needed. In addition to topical anesthesia, pinpoint anesthesia with 2% lidocaine was adopted in cases of scleral fixation [22 (link)]. All patients went through one of the following surgical procedures.
4
Posterior Vitrectomy Technique and Sample Collection
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The standard three-port 23G, 25G posterior vitrectomy was performed in both study groups using the Constellation Vision System (Alcon, USA), Stellaris PC (Bausch and Lomb, USA) and Assistant (Opticon, Italy). The vitreous samples collected at the initial stage of vitrectomy were used as the study material. To ensure that the balanced salt solution did not mix up to the vitreous sample, the latter was collected at the stage of the air tamponade. This was followed by reattachment of the retina, retinal tamponade with perfluoro-n-octane and endolaser coagulation.
The obtained samples were placed in a tube and centrifuged at 1500 rpm for 10 min. Then the top layer was collected, placed into sterile plastic tubes and frozen at − 70°C. The samples were assayed within 6 months after collection.
The obtained samples were placed in a tube and centrifuged at 1500 rpm for 10 min. Then the top layer was collected, placed into sterile plastic tubes and frozen at − 70°C. The samples were assayed within 6 months after collection.
5
Pars Plana Vitrectomy for Epiretinal Membrane Removal
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Surgeries were performed by 3 surgeons (H.T., T.I., T.A.) using 25-gauge pars plana vitrectomy with the Stellaris PC (Bausch + Lomb, Rochester, NY, USA) or Constellation Vision System (Alcon Surgical, Fort Worth, TX, USA). Triamcinolone acetonide (TA; MaQaid, Wakamoto Pharmaceutical, Tokyo, Japan) was used to visualize the vitreous 21 . After cutting the core vitreous, TA was reinjected over the macula to grasp and peel the ERM with end-gripping forceps (Alcon Surgical). After removing the ERM, brilliant blue G (BBG; #0770 Sigma-Aldrich, St.
Louis, MO, USA)-the use of which was approved by the Institutional Review Board of the Nippon Medical School Hospital (approval number: 2012-033)-was used for ILM staining. ILM peeling was performed with an extendible diamond dusted sweeper (Alcon Surgical) and endgripping forceps (Fig. 1). Cataract surgery was combined with vitrectomy for 16 phakic eyes; 2 phakic eyes and 9 aphakic eyes were treated by vitrectomy only. Fluid-gas exchange (FGX) and intraocular gas tamponade with 20% SF6 were performed for all eyes with ERM in which intraoperative retinal breaks were found during a thorough peripheral vitreous shaving.
Louis, MO, USA)-the use of which was approved by the Institutional Review Board of the Nippon Medical School Hospital (approval number: 2012-033)-was used for ILM staining. ILM peeling was performed with an extendible diamond dusted sweeper (Alcon Surgical) and endgripping forceps (Fig. 1). Cataract surgery was combined with vitrectomy for 16 phakic eyes; 2 phakic eyes and 9 aphakic eyes were treated by vitrectomy only. Fluid-gas exchange (FGX) and intraocular gas tamponade with 20% SF6 were performed for all eyes with ERM in which intraoperative retinal breaks were found during a thorough peripheral vitreous shaving.
6
Stellaris PC Phacoemulsification Under Endoillumination
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All surgeries were performed by the same surgeon (E.Y.) under subtenon anesthesia using lidocaine 2% (Jetocain) and intracameral anesthesia using preservative-free lidocaine HCl 1% (Jetocain Simplex). The Stellaris PC system (Bausch & Lomb, Inc.) was used for phacoemulsification surgery, and independent lamp system (the light is connected to the Xenon light source [22000 lumens]) of the Stellaris PC was used for illumination of the anterior segment. After 2.8 mm superior clear corneal incision and 2 0.6 mm limbal paracentesis at the 10 o'clock and 2 o'clock positions, 0.1 mL of trypan blue 0.06% (Vision Blue, DORC International) was injected into the anterior chamber to make the anterior lens capsule more visible. A 23-gauge (G) endoilluminator (Shielded Widefield Endoillumination; Bausch & Lomb, Inc.) was inserted into the eye through the paracentesis, the microscope light was turned off, and 5.5 to 6.0 mm continuous curvilinear capsulorhexis, phacoemulsification with the divide-and-conquer technique, coaxial aspiration/irrigation, and foldable acrylic IOL (Sensar AR40e; Advanced Medical Optics Inc.) implantation were performed safely and effectively under endoillumination (Video, see Supplemental Digital Content, available at https://links.lww.com/JRS/A6) (Figures 1 and2).
7
Phacoemulsification Cataract Surgery Protocol
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All surgical procedures were performed by an experienced surgeon (author G.R.) using the phacoemulsification machine (Stellaris PC, Bausch & Lomb, Bloomfield, CT, USA, 2016) with the “divide and conquer“ technique shifting into a “stop and chop”. Preoperatively, all the eyes were dilated using tropicamide 1% and phenylephrine 10%, followed by peribulbar anaesthesia. A main incision of 2.2 mm on the temporal side and two side-port incisions of 1.2 mm were applied at the limbus. A cohesive viscoelastic substance (Protectalon 2%) was injected into the anterior chamber for space maintenance, and a dispersive viscoelastic fluid was applied for corneal endothelium protection (Etacoat 2.4% HPMC—Hydroxypropyl Methyl Cellulose), then a curvilinear capsulorhexis was performed. Using phacoemulsification, the nucleus lens was removed along with the residual cortex, while irrigation–aspiration was applied. Different foldable IOLs (intraocular lenses), such as hydrophobic monofocal IOLs with a biconvex aspheric optic that ensures that the lens is virtually aberration neutral (Hyflex) or trifocal hydrophobic lenses (Acriva Trinova) were implanted in the capsular bag. The excess of viscoelastic materials was washed out and the corneal incisions were hydro-sealed with a special patch.
8
Comparing Cataract Surgical Systems
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The systems tested included the Centurion with Active Sentry that includes Active Fluidics; the WhiteStar Signature Pro (Johnson & Johnson Vision) with the OPO73 cassette; and the Stellaris PC (Bausch & Lomb, Inc.) with the StableChamber cassette (Table 1).
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