June 2013
Volume 54, Issue 15
Free
ARVO Annual Meeting Abstract  |   June 2013
Asymmetrical vitreous status in unilateral epimacular membrane observed by swept-source optical coherence tomography
Author Affiliations & Notes
  • Danjie Li
    Ophthalmology, Department of Ophthalmology, Gunma University School of Medicine,, Maebashi, Japan
  • Hirotaka Itakura
    Ophthalmology, Department of Ophthalmology, Gunma University School of Medicine,, Maebashi, Japan
  • Shoji Kishi
    Ophthalmology, Department of Ophthalmology, Gunma University School of Medicine,, Maebashi, Japan
Investigative Ophthalmology & Visual Science June 2013, Vol.54, 6326. doi:
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    • Get Citation

      Danjie Li, Hirotaka Itakura, Shoji Kishi; Asymmetrical vitreous status in unilateral epimacular membrane observed by swept-source optical coherence tomography. Invest. Ophthalmol. Vis. Sci. 2013;54(15):6326.

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

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Abstract

Purpose: To investigate the vitreous condition in unilateral idiopathic epimacular membrane (IEM) using swept-source optical coherent tomography (SS-OCT)

Methods: We prospectively examined the vitreous status of 12 consecutive cases of unilateral IEM using slit-lamp biomicroscopy and SS-OCT (Topcon, Japan). Best-corrected visual acuity of 12 IEM eyes were 1.2 in 4 eyes, 0.4 was in 5 eyes, and 0.5, 0.6, 0.8 in one eye, respectively, and 1.2 in all normal fellow eyes. The mean refractive was -4 diopter in IEM eyes and -3.5 in the fellow eyes. OCT images were obtained with a horizontal and a vertical 12 mm scan through the fovea in both eyes. We compared the prevalence of PVD between affected and normal fellow eyes.

Results: All 12 IEM eyes had complete PVD with Weiss ring on slit-lamp biomicroscopy. SS-OCT confirmed no vitreous structure and epiretinal membrane on the macula. Complete PVD was not observed in 12 fellow eyes. SS-OCT revealed the “posterior precortical vitreous pocket” on the macular area in all 12 normal fellow eyes. Because of the pocket, premacular vitreous cortex was present as a membrane separated from the gel. Premacular vitreous cortex was slightly detached in the perifoveal area in 10 eyes but attached at the disc.

Conclusions: SS-OCT enabled to depict the specific vitreous characteristics on the macula. The posterior wall of the “posterior precortical vitreous pocket” seems to serve a basic structure of IEM.

Keywords: 763 vitreous  
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