Instrument Design for Vitreous Surgery via the Pars Plana

1977 ◽  
Vol 99 (4) ◽  
pp. 209-214
Author(s):  
G. R. Harvey
Keyword(s):  
Factor Analysis ◽  
Pars Plana Vitrectomy ◽  
Vitreous Body ◽  
Instrument Design ◽  
Posterior Segment ◽  
Design Parameters ◽  
Vitreous Surgery ◽  
Mechanical Factor ◽  
Pars Plana ◽  
Infusion System

The vitreous body is a transparent gel occupying the posterior segment of the ocular globe. In diseased states, vision is obscured by haemorrhage or opacity or may be lost because of retinal detachment. The design of instruments for pars plana vitrectomy is based on the therapy of the disease. Conclusions drawn from human and mechanical factor analysis have been grouped into four categories: (a) instrument design parameters; (b) surgical procedure; (c) intraocular illumination; and (d) indications and results. Possible extensions with fibre optic illumination of the infusion system are indicated.

Choice of Surgical Technique in the Management of Cataract Combined with Vitreous Surgery

1997 ◽  
Vol 7 (3) ◽  
pp. 245-250 ◽  
Author(s):  
D. De Ortueta Hilberath ◽  
C.C. Lösche
Keyword(s):  
Pars Plana Vitrectomy ◽  
Corneal Edema ◽  
Cataract Extraction ◽  
Posterior Segment ◽  
Combined Surgery ◽  
Vitreous Surgery ◽  
Choice Of Procedure ◽  
Scleral Tunnel ◽  
Pars Plana Lensectomy ◽  
Pars Plana

Purpose. To compare different methods of lens removal during vitreous surgery. Methods. We reviewed the data of 37 consecutive eye operations with combined surgery of the lens and vitreous in the Mülheim Eye Hospital between March ‘93 and September ‘94. Results. In 14 eyes a pars plana lensectomy was done, in 7 an ECCE (extra capsular cataract extraction), and in 16 phacoemulsification was combined with a regular threeport pars plana vitrectomy. Conclusions. The choice of procedure was mainly influenced by the hardness of the lens and whether an IOL implant was considered. If no IOL is planned and the lens is soft enough, the best way to remove it is by pars plana lensectomy. If the nucleus seems too hard, phacoemulsification should be performed, because of the risk of releasing the nucleus into the posterior segment. If an IOL is planned, the best method of lens removal is phacoemulsification via a scleral tunnel. In both cases if the nucleus is very hard ECCE should be performed because of the risk of corneal edema.

Transscleral Extraction of an Intraocular Foreign Body From the Posterior Segment of the Eye Without Pars Plana Vitrectomy

2020 ◽  
Vol 76 (1) ◽  
pp. 14-23
Author(s):  
Štěpán Rusňák ◽  
Lenka Hecová
Keyword(s):  
Foreign Body ◽  
Pars Plana Vitrectomy ◽  
Young Patients ◽  
Vitreous Body ◽  
Visual Control ◽  
Intraocular Foreign Body ◽  
Survey Study ◽  
Surgical Method ◽  
Eye Trauma ◽  
Pars Plana

Purpose: Penetrating eye trauma with an intraocular foreign body is very frequent, especially in men in their productive age. Pars plana vitrectomy would be the standard surgical method at our department. However, in indicated cases (metallic intraocular bodies in the posterior eye segment in young patients with well transparent ocular media without detached ZSM and without any evident vitreoretinal traction) transscleral extraction of the intraocular foreign body is performed using the exo magnet, eventually endo magnet with a minimal PPV without PVD induction under the visual control of endo-illumination. Materials and Methods: Between June 2003 and June 2018, 66 eyes of 66 patients diagnosed with a penetrating eye trauma caused by an intraocular foreign body located in the posterior eye segment were treated. In 18 eyes (27,3 %) with a metallic foreign body in vitreous (body) or in retina, no PPV or a minimal PPV without PVD was used as a surgical method. In the remaining 48 eyes (72,7 %), a standard 20G, respectively 23G PPV method were used together with PVD induction and the foreign body extraction via endo or exo magnet. Conclusions: As demonstrated by our survey/study, in the cases of a thoroughly considered indication an experimented vitreoretinal surgeon can perform a safe NCT transscleral extraction from the posterior eye segment via exo magnet, eventually endo magnet under the visual control of a contact display system with a minimal PPV. Thereby, the surgeon can enhance the patient´s chance to preserve their own lens and its accommodative abilities as well as reduce the risk of further surgical interventions of the afflicted eye.

Outcomes of 27 gauge pars plana vitrectomy for a variety of posterior segment diseases

2021 ◽  
Vol 71 (11) ◽  
pp. 2570-2575
Author(s):  
Muhammad Amer Awan ◽  
Fiza Shaheen ◽  
Kholood Janjua
Keyword(s):  
Retinal Detachment ◽  
Pars Plana Vitrectomy ◽  
Tertiary Care ◽  
Operating Time ◽  
Retinal Vasculitis ◽  
Posterior Segment ◽  
Care Hospital ◽  
Silicon Oil ◽  
Operative Complications ◽  
Pars Plana

Objective:  To report our experience with 27 gauge (27G) pars plana vitrectomy (PPV) system for a variety of simple to complex posterior segment disorders Methods: Single center, Retrospective, Cohort study. Data of 665 eyes of 574 patients that underwent 27G PPV for a variety of indications from July 2015 to June 2019 at a tertiary care hospital was analyzed. Results: Common surgical indications included; Diabetic tractional retinal detachment (196, 29.5%), vitreous haemorrhage (191, 28.7%), full thickness macular hole (80, 12%), epiretinal membrane (66, 9.9%), endophthalmitis (26, 3.9%), tractional diabetic macular edema (14, 2.1%), ectopia lentis (11, 1.7%), dropped lens matter (13, 2%) and others (68, 10.2%). Mean operating time was 62 ± 37 minutes. With the exception of 2 cases where 20G fragmatome was utilized, no case required conversion to 20 gauge system while a 25G trocar was used for the silicon oil injection. Per-operative complications included; iatrogenic retinal tear (2 eyes, 0.3%) and supra choroidal silicon oil migration (1 eye, 0.15%). Post-operative complications were raised IOP (7 eyes, 1%), endophthalmitis (1 eye, 0.15%), hemorrhagic occlusive retinal vasculitis (1 eye, 0.15%) and retinal detachment (2 eyes, 0.3%). Mean Visual Acuity improved from 1.62 ± 0.68 logarithm of minimum angle of resolution (logMAR) to 0.4 ± 0.38 logMAR (P <0.001). Conclusion: With 3 months follow up time, 27 G PPV has proved to be a safe and effective system for both simpler and complex retinal pathologies requiring significant surgical manipulation. Continuous...

Measurement of Ophthalmodynamometric Pressure with the Vented-Gas Forced-Infusion System during Pars Plana Vitrectomy

2010 ◽  
Vol 51 (8) ◽  
pp. 4195 ◽  
Author(s):  
Fumiki Okamoto ◽  
Yoshimi Sugiura ◽  
Yoshifumi Okamoto ◽  
Yumi Hasegawa ◽  
Takahiro Hiraoka ◽  
...  
Keyword(s):  
Pars Plana Vitrectomy ◽  
Pars Plana ◽  
Infusion System

Effect of Adjunctive Pars Plana Vitrectomy on Focal Posterior Segment Inflammation: A Case-Control Study in Tuberculosis-Associated Uveitis

2018 ◽  
Vol 2 (11) ◽  
pp. 1163-1169
Author(s):  
Hrishikesh Kaza ◽  
Rohit Modi ◽  
Rajkishori Rana ◽  
Krushna Gopal Panda ◽  
Manas Ranjan Barik ◽  
...  
Keyword(s):  
Pars Plana Vitrectomy ◽  
Case Control Study ◽  
Case Control ◽  
Posterior Segment ◽  
Pars Plana ◽  
Control Study

Long-Term Visual Outcomes and Safety Profile of 27-Gauge Pars Plana Vitrectomy for Posterior Segment Disease

Ophthalmology ◽  
2018 ◽  
Vol 125 (3) ◽  
pp. 423-431 ◽  
Author(s):  
M. Ali Khan ◽  
Alexander Kuley ◽  
Christopher D. Riemann ◽  
Maria H. Berrocal ◽  
Rohit R. Lakhanpal ◽  
...  
Keyword(s):  
Safety Profile ◽  
Pars Plana Vitrectomy ◽  
Posterior Segment ◽  
Visual Outcomes ◽  
Pars Plana

scholarly journals Safety and efficacy of small incision, sutureless pars plana vitrectomy for patients with posterior segment complications secondary to uveitis

2011 ◽  
Vol 90 (5) ◽  
pp. e409-e410 ◽  
Author(s):  
Sofia Androudi ◽  
Anna Praidou ◽  
Chrysanthos Symeonidis ◽  
Evangelia Tsironi ◽  
Barbara Iaccheri ◽  
...  
Keyword(s):  
Pars Plana Vitrectomy ◽  
Posterior Segment ◽  
Safety And Efficacy ◽  
Small Incision ◽  
Pars Plana

scholarly journals PARS PLANA VITRECTOMY FOR VITREOUS HEMORRHAGE IN CIPTOMANGUNKUSUMO HOSPITAL

2021 ◽  
Vol 4 (2) ◽  
pp. 99
Author(s):  
Marsha Alyssa Razief Fitri ◽  
Anggun Rama Yudantha
Keyword(s):  
Visual Acuity ◽  
Pars Plana Vitrectomy ◽  
Diagnostic Procedure ◽  
Vitreous Hemorrhage ◽  
Descriptive Study ◽  
Posterior Segment ◽  
Early Vitrectomy ◽  
Systemic Control ◽  
Pars Plana

Introduction: Vitreous hemorrhage is the presence of blood in the vitreous cavity. This condition could impair the visual function and hindered the clinician’s ability to examine the posterior segment of the eye.  Pars plana vitrectomy (PPV) not only act as a surgical treatment of choice but also diagnostic procedure. Immediate PPV has the advantage to optimalize visual acuity Methods: Retrospective descriptive study of vitreous hemorrhage patients underwent pars plana vitrectomy in Ciptomangunkusumo Hospital, Indonesia from January to December 2018 Result: There were 160 cases of vitreous hemorrhage cases undergoes pars plana vitrectomy in 2018. Most frequent etiology was proliferative diabetic retinopathy (49.4%). Rebleeding was found only in 8 cases within the period of three months follow up. Final visual acuity was improved in majority of the cases and found to be related to timing of the surgery. Conclusion: Early vitrectomy along with systemic control of underlying factors lead to improvement of visual acuity in vitreous hemorrhage.  

Sign in / Sign up

Export Citation Format

Share Document