title: Limitation of 25-gauge vitrectomy instrumentation in highly myopic eyes.
abstract: In highly myopic eyes, a 25-gauge soft-tip needle is unable to remove fluid completely during air-fluid exchange because the needle is too short to reach the back of the elongated globe. In the simulated example, we found that the standard soft-tip cannulated needle is unsuitable for use in eyes with axial lengths greater than 31 mm. Other 25-gauge instruments are similarly unable to reach the back of a long eye.
authors.affiliation: Department of Ophthalmology, University of California, San Francisco 94143-0730, USA.
authors.forename: Ajay
authors.initials: A
authors.lastname: Singh
authors.forename: Amania A
authors.initials: AA
authors.lastname: Fawzi
authors.forename: Jay M
authors.initials: JM
authors.lastname: Stewart
mesh_terms: D004867:Equipment Design; D006801:Humans; D009216:Myopia / Q000150:complications* / Q000503:physiopathology*; D009339:Needles / Q000009:adverse effects*; D012163:Retinal Detachment / Q000150:complications* / Q000601:surgery*; D012720:Severity of Illness Index; D014821:Vitrectomy / Q000295:instrumentation*