title: UNUSUAL CASE OF STELLATE NONHEREDITARY IDIOPATHIC FOVEOMACULAR RETINOSCHISIS.
abstract: OBJECTIVE
  To report a case of unilateral stellate nonhereditary idiopathic foveomacular retinoschisis (SNIFR) in a young male showing structural changes induced by a Valsalva maneuver.
  
  
  METHODS
  Case report of a 26-year-old oboist with SNIFR, including multimodal imaging. Eye-tracked spectral-domain optical coherence tomography (SD-OCT) was used to compare the retinal architecture at rest and during a Valsalva maneuver.
  
  
  RESULTS
  Spectral-domain optical coherence tomography showed macular and peripapillary retinoschisis with no signs of pathologic myopia, optic pit, or vitreoretinal traction. A full-field electroretinogram showed supranormal responses in the eye studied. Magnetic resonance imaging of the brain showed no abnormalities. Eye-tracked SD-OCT scans showed an increase in retinal thickness reaching 28 microns superior to the disc during an induced Valsalva maneuver.
  
  
  CONCLUSIONS
  Stellate nonhereditary idiopathic foveomacular retinoschisis is a diagnosis made when other known causes of retinoschisis have been excluded. In this patient with unilateral SNIFR, an increase in retinal thickness during a Valsalva maneuver was demonstrated. Further study would be needed to determine the mechanism producing this change and to assess its potential influence on visual prognosis.
authors.affiliation: *Vitreous Retina Macula Consultants of New York, New York; †LuEsther T. Mertz Retinal Research Center, Manhattan Eye, Ear and Throat Hospital, New York, New York; ‡Department of Ophthalmology, Edward S. Harkness Eye Institute, College of Physicians and Surgeons, Columbia University, New York, New York; and §Department of Ophthalmology, New York University School of Medicine, New York, New York.
authors.forename: Rosa
authors.initials: R
authors.lastname: Dolz-Marco
authors.forename: Kenneth
authors.initials: K
authors.lastname: Kato
authors.forename: K Bailey
authors.initials: KB
authors.lastname: Freund
authors.forename: Lawrence A
authors.initials: LA
authors.lastname: Yannuzzi
mesh_terms: D000328:Adult; D004596:Electroretinography; D006801:Humans; D008297:Male; D041441:Retinoschisis / Q000175:diagnosis*; D014636:Valsalva Maneuver; D014786:Vision Disorders / Q000175:diagnosis*