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  • Title: Outer Retinal Structural Alternation and Segmentation Errors in Optical Coherence Tomography Imaging in Patients With a History of Retinopathy of Prematurity.
    Author: Chen YH, Lien R, Chiang MF, Huang CY, Chang CJ, Wang NK, Chen YP, Chao AN, Chen KJ, Chen TL, Hwang YS, Lai CC, Wu WC.
    Journal: Am J Ophthalmol; 2016 Jun; 166():169-180. PubMed ID: 27038892.
    Abstract:
    PURPOSE: To evaluate retinal anatomy and segmentation errors from spectral-domain optical coherence tomography (SD-OCT) imaging in school-aged children. DESIGN: A prospective cohort study in a referral medical center. METHODS: One hundred thirty-three eyes of 133 patients were enrolled. Patients were grouped as those who were treated for retinopathy of prematurity (ROP) (ROP-Tx group); those with spontaneously regressed ROP (ROP-non-Tx group); other premature patients (premature group); and full-term age-matched children (full-term group). Anatomy and segmentation errors of retina were evaluated by SD-OCT. RESULTS: The mean age at assessment was 9.5 years (range, 4-16 years). The external limiting membrane (ELM) and the cone outer segment tips (COST) line were least frequently identified in patients of the ROP-Tx group (65.2% and 47.8%, P = .002 and P < .001, respectively). The visual acuity of the patients did not correlate significantly with the absence of COST line (P = .140) but correlated with the absence of ELM (P < .001). The presence of artifacts, including misidentification of the inner retina, misidentification of the outer retina, out-of-register artifacts, off-center scans, and degraded scan images, was observed to range from 0.6% to 50.0% in 4 groups of patients. All types of errors occurred more frequently in the ROP-Tx group than in the full-term group (all P < .05). CONCLUSIONS: Outer retinal abnormalities were commonly observed in the ROP-Tx group. The higher segmentation errors in the ROP-Tx group might be related to fine structural abnormalities in the outer retina. Future studies are needed to investigate the mechanisms for these structural changes.
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