Short term effect of choroid thickness in the horizontal meridian detected by spectral domain optical coherence tomography in myopic children after orthokeratology
Journal Title: International Journal of Ophthalmology - Year 2018, Vol 11, Issue 6
Abstract
"AIM: To investigate choroidal thickness changes in the horizontal meridian after orthokeratology. METHODS: This is a prospective cross-sectional observed study. Subjects (n=30; 11.3±1.7y) with low-to-moderate myopia (-1.0 to -6.0 diopters), wore orthokeratology (Ortho-K) lenses for 3mo. Before and after Ortho-K, OCT scans were made through the fovea in the horizontal meridian. Choroid thickness around the fovea was acquired by custom software. The analyzed regions along the horizontal meridian were divided into 7 equal zones. Ocular parameters were measured by Lenstar LS 900 non-contact biometry. RESULTS: Only the right eye ocular parameters were analyzed in this study. Before Ortho-K, choroidal thickness along the horizontal meridian was 273.7±31.8 µm in the temporal zone, 253.1±38.6 µm in the macula zone, and 194.8±52.2 µm in the nasal zone. After Ortho-K, the choroid was thicker in each horizontal zone (P<0.05). The increased thickness was greatest in the temporal zone (13.5±22.5 µm) and least in the nasal zone (8.4±14.2 µm). The axial length (AL) increased 0.02 mm (P>0.05). The choroid thickness change in each horizontal zone was negatively correlated with AL (r, -0.3 to -0.4; P<0.05) except one of the nasal zones. CONCLUSION: In myopic children, the thickness of the choroid is greatest in the temporal zone and thinnest in the nasal zone. After nightly Ortho-K for 3mo, the thickness increase along the horizontal meridian. The choroid thickness changes are negatively correlated with the change of AL."
Authors and Affiliations
Yan Lian
Keywords
Related Articles
- EP ID EP484176
- DOI -
- Views 53
- Downloads 0
Prevalence of pseudoexfoliation syndrome and its association with ocular and systemic diseases in Eskisehir, Turkey
"AIM: To investigate the prevalence of pseudoexfoliation syndrome (PEX) and its associations with ocular and systemic diseases in a population sample aged over 40y. METHODS: A total of 2356 subjects were randomly chosen...
Bruch’s membrane opening-minimum rim width and visual field loss in glaucoma: a broken stick analysis
"AIM: To determine the Bruch’s membrane opening-minimum rim width (BMO-MRW) tipping point where corresponding visual field (VF) damages become detectable. METHODS: A total of 85 normal subjects and 83 glaucoma patients (...
Central retinal artery occlusion after endovascular coil embolization for internal carotid artery aneurysm
Letter to the Editor
Evaluation of antioxidants and argpyrimidine in normal and cataractous lenses in north Indian population
"AIM: To assess the level of glutathione, thioltransferase, and argpyrimidine in nuclear and cortical cataractous lenses as well as in the clear lenses in the north Indian population. METHODS: Human cataractous lenses we...
The prevalence of vision impairment and refractive error in 3654 first year students at Tianjin Medical University
"AIM: To determine the prevalence of vision impairment (VI) and refractive error in first year university students at the Tianjin Medical University. METHODS: This is a cross-sectional observational cohort study of VI an...