PMID- 28986597 OWN - NLM STAT- MEDLINE DCOM- 20171018 LR - 20180316 IS - 1552-5783 (Electronic) IS - 0146-0404 (Linking) VI - 58 IP - 12 DP - 2017 Oct 1 TI - Associations Between Outer Retinal Structures and Focal Macular Electroretinograms in Patients With Retinitis Pigmentosa. PG - 5122-5128 LID - 10.1167/iovs.17-22040 [doi] AB - PURPOSE: Our earlier study showed that the width of the intact ellipsoid zone (EZ) of the photoreceptors was significantly but weakly correlated with the amplitudes of the focal macular ERGs (FMERGs). The aim of this study was to determine a microstructure of the photoreceptors in the spectral-domain optical coherence tomographic (SD-OCT) images that was more strongly correlated with the FMERG parameters in eyes with retinitis pigmentosa (RP). METHODS: This was a retrospective, observational study. The medical records of 65 patients with RP were reviewed. FMERGs were elicited by a 15-degree stimulus spot. The width of the EZ and the outer segment (OS) area surrounded by EZ and retinal pigment epithelium in the SD-OCT images within 15 degrees of the fovea were evaluated. Spearman correlation tests and multiple stepwise regression analyses were performed. RESULTS: There was a strong correlation between the amplitudes of FMERGs and the EZ width (r = 0.68 for a-wave amplitude; r = 0.64 for b-wave amplitude), and also between the amplitudes of the FMERGs and the OS area (r = 0.69 for a-wave amplitude; r = 0.67 for b-wave amplitude). However, some patients had long EZ widths but had severely reduced FMERGs. Multiple stepwise regression analyses showed that the OS area was the only significant independent predictor of the amplitudes of FMERGs (P < 0.001). CONCLUSIONS: The OS area might be a better morphological structure to use to predict the physiological function of the macula. FAU - Kominami, Taro AU - Kominami T AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Ueno, Shinji AU - Ueno S AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Kominami, Azusa AU - Kominami A AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Nakanishi, Ayami AU - Nakanishi A AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Yasuda, Shunsuke AU - Yasuda S AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Piao, Chang-Hua AU - Piao CH AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Okado, Satoshi AU - Okado S AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Terasaki, Hiroko AU - Terasaki H AD - Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan. LA - eng PT - Case Reports PT - Journal Article PT - Observational Study PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 SB - IM MH - Adult MH - *Electroretinography MH - Female MH - Humans MH - Macula Lutea/*physiology MH - Male MH - Middle Aged MH - Photoreceptor Cells, Vertebrate/*pathology MH - Retinal Ganglion Cells/physiology MH - Retinitis Pigmentosa/*physiopathology MH - Retrospective Studies MH - *Tomography, Optical Coherence/methods MH - Visual Acuity MH - Young Adult EDAT- 2017/10/08 06:00 MHDA- 2017/10/19 06:00 CRDT- 2017/10/08 06:00 PHST- 2017/10/08 06:00 [entrez] PHST- 2017/10/08 06:00 [pubmed] PHST- 2017/10/19 06:00 [medline] AID - 2657408 [pii] AID - 10.1167/iovs.17-22040 [doi] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2017 Oct 1;58(12):5122-5128. doi: 10.1167/iovs.17-22040.