Parapapillary gamma and delta zones in high myopiaA
Purpose: To examine parapapillary zones gamma and delta in highly myopic eyes. Methods: The retrospective observational study included patients attending the Tokyo high myopia clinics. Fundus photographs were morphometrically examined. Results: The study population included 600 eyes (304 individuals...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 2018
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| In: |
Retina
Year: 2018, Volume: 38, Issue: 5, Pages: 931-938 |
| ISSN: | 1539-2864 |
| DOI: | 10.1097/IAE.0000000000001650 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1097/IAE.0000000000001650 Verlag, lizenzpflichtig, Volltext: https://journals.lww.com/retinajournal/Abstract/2018/05000/PARAPAPILLARY_GAMMA_AND_DELTA_ZONES_IN_HIGH_MYOPIA.9.aspx 
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| Author Notes: | Jost B. Jonas, Yuxin Fang, Pascal Weber, Kyoko Ohno-Matsui |
| Summary: | Purpose: To examine parapapillary zones gamma and delta in highly myopic eyes. Methods: The retrospective observational study included patients attending the Tokyo high myopia clinics. Fundus photographs were morphometrically examined. Results: The study population included 600 eyes (304 individuals) with a mean age of 62.7 ± 14.3 years (range: 13-90 years) and mean axial length of 29.6 ± 2.2 mm (range: 23.2-35.4 mm). In multivariate analysis (regression coefficient r2:0.90), larger horizontal gamma zone diameter was correlated with wider delta zone diameter (P < 0.001; standardized regression coefficient beta: 0.81), higher ratio of vertical-to-horizontal disk diameter (P < 0.001; beta: 0.10), shorter fovea-outer gamma zone border distance (P < 0.001; beta: −0.19), longer disk-fovea distance (P < 0.001; beta: 0.18), and higher count of chorioretinal atrophic lesions (P < 0.001; beta: 0.07). Longer horizontal delta zone width was correlated with longer horizontal gamma zone diameter (P < 0.001; beta: 1.00), longer horizontal disk diameter (P < 0.001; beta: 0.15), shorter disk-fovea distance (P < 0.001; beta: −0.19), longer fovea-outer gamma zone border distance (P < 0.001; beta: 0.19), and smaller diameter of the largest chorioretinal lesion (P = 0.03; beta: −0.04). Longer width of both zones together was associated with longer horizontal disk diameter (P < 0.001; beta: 0.31), higher ratio of vertical-to-horizontal disk diameter (P = 0.001; beta: 0.18), longer disk-fovea distance (P < 0.001; beta: 0.19), shorter fovea-outer gamma zone border distance (P < 0.001; beta: −0.18), higher number of chorioretinal lesions (P < 0.001; beta: 0.30), and longer vertical distance between the superior and inferior temporal arterial arcade (P = 0.001; beta: 0.13). Conclusion: Larger gamma and delta zones were correlated with larger optic disk and more marked vertical optic disk rotation, longer disk-fovea distance, higher number of chorioretinal lesions, and longer temporal vascular arcade diameter. Parapapillary gamma and delta zones may develop before chorioretinal lesions develop and enlarge. |
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| Item Description: | Gesehen am 07.09.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1539-2864 |
| DOI: | 10.1097/IAE.0000000000001650 |