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H. Kobayashi, K. Kobayashi; A Morphological Change of Attached Macula After Successful Vitrectomy for Rhegmatogeous Retinal Detachment. Invest. Ophthalmol. Vis. Sci. 2007;48(13):132.
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© ARVO (1962-2015); The Authors (2016-present)
Visual improvement varies after successful vitrectomy for macula-off retinal detachment. To describe the tomographic features of the neurosensory retina after successful vitrectomy and to study a morphological postoperative change of the attached macula with Fourier analysis.
Retinal thickness estimates were obtained from 60 patients (56.3 ± 13.8 years) with macula-off retinal detachment who underwent vitrectomy. All subjects were imaged using optical coherence tomography (OCT 3000, Zeiss). The pattern of thickness measurements of 5-mm line in the center of the fovea from OCT in the 32 sectors was analyzed to obtain the Fourier coefficients. The fast Fourier transformation was employed to determine the coefficients.
Of 60 eyes, 57 eyes (95%) showed re-attachment after primary surgery and the detached retinas appeared attached on ophthalmoscopy 1month postoperatively. OCT showed residual detachment in 10 eyes (18%) and macular edema in 6 eyes (11%). In 41 eyes without macular detachment and edema, best-corrected visual acuity before and 1, 3 12 months was 0.34, 0.55, 0.61 and 0.76, respectively, and improved with time. Mean retinal thickness of 5-mm line at 1, 3 and 12 months was 270µm, 269µm and 254µm: there was no significant difference. Fourier analysis of retinal thickness showed that mean F1 and F2 component amplitude were 535.4±240.9 and 659.1±116.4 at 1 month, 460.6±170.0 and 573.3±113.6 at 3 months, and 289.1±105.8 and 474.8±153.3 at 12 months. Both decreased significantly with time (P<0.05) and showed a significant correlation with LogMAR-best corrected visual acuity (P < 0.01). Inverted Fourier analysis showed that foveal depression had become deeper and steeper with time, and seemed to have resembled the fovea of the opposite eye.
OCT may be a useful tool for detecting a morphological change after successful vitrectomy for retinal detachment.
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