June 2020
Volume 61, Issue 7
ARVO Annual Meeting Abstract  |   June 2020
Evaluation of Safety Outcomes of Pars Plana Vitrectomy Surgery using the Hypersonic Vitrector System: Case Series.
Author Affiliations & Notes
  • Walter I. Rivera
    Valley Retina Institute, Edinburg, Texas, United States
  • Agustin Loria
    Valley Retina Institute, Edinburg, Texas, United States
  • Alice Behrens
    Valley Retina Institute, Edinburg, Texas, United States
  • Victor H. Gonzalez
    Valley Retina Institute, Edinburg, Texas, United States
  • Footnotes
    Commercial Relationships   Walter Rivera, None; Agustin Loria, None; Alice Behrens, None; Victor Gonzalez, Abbvie (C), Alcon/Norvartis (C), Alimera (F), allegro ophthalmics (F), Allergan (C), Astellas Institute of Regenerative Medicine (F), Baush and Lomb (C), Bayer (C), Beaver-Visitec International, Inc. (C), Boehringer Ingelheim (F), Clearside Biomedical (F), DRCR NET (F), Eyegate Pharma (F), Genetech (C), Graybug Vision, Inc. (F), Iconic Therapeutics (F), Insite Vision Inc. (F), Opternative (F), Opthea Ltd (F), Panoptica (C), Regeneron (F), Santen (C), Thrombogenics Inc. (F), Topcon (C), Valcant (F)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2020, Vol.61, 3731. doi:
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    • Get Citation

      Walter I. Rivera, Agustin Loria, Alice Behrens, Victor H. Gonzalez; Evaluation of Safety Outcomes of Pars Plana Vitrectomy Surgery using the Hypersonic Vitrector System: Case Series.. Invest. Ophthalmol. Vis. Sci. 2020;61(7):3731.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose : Vitrectomy has traditionally been performed with a guillotine cutter. The trend has been toward smaller gauge, faster cutting systems. The rate at which guillotine cutters cut efficiently is limited by inherent mechanical constraints. Hypersonic vitrectomy addresses those inherent mechanical constraints. It cuts vitreous efficiently at high cut rates and low vacuum. This report summarizes the type of cases and safety results of consecutive cases using the hypersonic vitrector

Methods : Retrospective, observational, consecutive, case series, non-randomized study in a single site in USA. Twelve eyes of 12 patients who underwent Pars Plana Vitrectomy (PPV) were analyzed. The Pathologies including cases of Vitreous hemorrhage (VH) (4/12), Tractional Retinal Detachment (TRD)(3/12), Secondary IOL placement (2/12), Macular pucker (1/12), Macular Hole (1/12), Vitreous Opacity (1/12) that underwent vitrectomy using a 23 –gauge Hypersonic Vitrector. We analyzed intra ocular pressure (IOP), Visual Acuity (VA), Cornea and anterior chamber (AC) characteristics pre and post-op.

Results : In this study we found 50% males, mean age was 59.4y (31-84y), 83% patients had DM (10), 83% had HTN (10), 50% were phakic (6), 41.67% pseudophakic (5), and 8.33% aphakic (1). The Preoperative (pre-op) mean VA was 20/125 (20/20-Light Perception [LP]). One day post-opt mean VA was 20/104 (20/50-LP). One week follow up mean VA was 20/47 (20/20-Hand Motion [HM]). One month post-op mean was VA 20/47 (20/20-HM). Pre-op IOP mean was 13.75mmHg (8-18mmHg). One day post-op mean IOP was 18.33mmHg (13-31mmHg). One week Follow up was 15.2mmHg (8-25). One month mean IOP was 14.42mmHg (8-20). In the Cornea and AC most of the patients present mild to none cell reaction. Only 2 patients had hyphema post-op that resolved at 1 month. There was no serious post-operative complication, hypotony or endophthalmitis observed in this study.

Conclusions :
This novel vitrectomy system demostrates efficacy and safety in different vitreoretinal pathologies. Futher studies will be needed to identify optimal settings for this novel syistem.

This is a 2020 ARVO Annual Meeting abstract.


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