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Evaluation of the IOP-Lowering Effect of a Multi-Pressure Dial at Different Negative Pressure Settings.
Swan, Russell J; Ferguson, Tanner J; Shah, Manjool; Muir, Kelly W; Samuelson, Thomas W; Ahmed, Iqbal Ike K; Lindstrom, Richard L; Radcliffe, Nathan M; Berdahl, John P.
Afiliación
  • Swan RJ; Vance Thompson Vision, Sioux Falls, South Dakota, USA.
  • Ferguson TJ; Cole Eye Institute, Cleveland Clinic, Cleveland Ohio, USA.
  • Shah M; Kellogg Eye Center, University of Michigan, Ann Arbor, Michigan, USA.
  • Muir KW; Duke Eye Center, Durham, North Carolina, USA.
  • Samuelson TW; Minnesota Eye Consultants, Minneapolis, Minnesota, USA.
  • Ahmed IIK; Prism Eye Institute, Mississauga, Ontario, Canada.
  • Lindstrom RL; Minnesota Eye Consultants, Minneapolis, Minnesota, USA.
  • Radcliffe NM; New York Eye and Ear Infirmary of Mount Sinai, New York, New York.
  • Berdahl JP; Vance Thompson Vision, Sioux Falls, South Dakota, USA.
Transl Vis Sci Technol ; 9(12): 19, 2020 11.
Article en En | MEDLINE | ID: mdl-33240572
Purpose: To evaluate the intraocular pressure (IOP)-lowering effect of a multi-pressure dial (MPD) at targeted negative pressure settings. Methods: Prospective, intrasubject controlled study of 65 healthy subjects randomized to receive no negative pressure for 60 minutes or negative pressure application at designated levels of 25%, 50%, and 75% of baseline IOP for 20 minutes each. The main outcome measure was mean IOP with application of negative pressure. Results: In the study eye group, from a baseline IOP of 15.8 ± 3.6 mm Hg, the mean IOP was 13.5 ± 3.4, 11.5 ± 3.1, and 10.2 ± 2.7 mm Hg with negative pressure settings of 25%, 50% and 75%, respectively. In the control eye group, from a baseline IOP of 15.5 ± 3.0 mm Hg, the mean IOP values at the same time points, without negative pressure, were 15.6 ± 3.0, 15.5 ± 2.5 and 15.3 ± 2.4 mm Hg. The difference between the mean IOPs of the two groups was significantly different at all negative pressure settings (P < 0.001) in comparison with baseline. There was one minor adverse event, a corneal abrasion, that was unrelated to device wear. Conclusions: Negative pressure application to the periocular space with a multi-pressure dial can produce titratable IOP reduction while the device is worn with active negative pressure. To our knowledge, this technology represents the first nonpharmacologic, nonlaser, nonsurgical method for IOP reduction. Translational Relevance: This represents the first study demonstrating the IOP-lowering ability of the multi-pressure dial, a device that uses a novel IOP-lowering strategy by delivering negative pressure to the periocular region.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Glaucoma de Ángulo Abierto / Presión Intraocular Tipo de estudio: Clinical_trials / Observational_studies Límite: Humans Idioma: En Revista: Transl Vis Sci Technol Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Glaucoma de Ángulo Abierto / Presión Intraocular Tipo de estudio: Clinical_trials / Observational_studies Límite: Humans Idioma: En Revista: Transl Vis Sci Technol Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos