EVALUATION OF ASYMMETRICITY OF RETINAL NERVE FIBER LAYER AND TOTAL RETINA IN RIGHT AND LEFT EYES OF NORMAL SUBJECTS USING EXTRACTED FEATURES FROM OPTICAL COHERENCE

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MAHMUDI TAHEREH; KAFIEH RAHELEH; RABBANI HOSSEIN; MEHRI DEHNAVI ALIREZA; AKHLAGHI MOHAMMAD REZA; ARBABIAN KHATEREH; AHMADI MOHAMMAD

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Journal: JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S) Year:2013 | Volume:31 | Issue:247 Page(s): 1185-1193

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Title

EVALUATION OF ASYMMETRICITY OF RETINAL NERVE FIBER LAYER AND TOTAL RETINA IN RIGHT AND LEFT EYES OF NORMAL SUBJECTS USING EXTRACTED FEATURES FROM OPTICAL COHERENCE

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OPTICAL COHERENCE TOMOGRAPHYQ2

RETINAQ2

ASYMMETRY ANALYSQ2

Abstract

Background: Early diagnosis of diseases is an important step in their treatment process, but it is difficult due to lack of satisfactorily sensitive imaging devices and difference in the parameters of the subjects. ASYMMETRY ANALYSis of RETINAl nerve fiber layer thickness and total RETINAl thickness can provide a criterion for physicians to accomplish early diagnosis.Methods: Data were collected from 50 normal subjects (aged 35 ± 10 years) by a Topcon model of 3D-OCT 1000. For this purpose, a pipeline of procedures was utilized; segmentation of RETINAl layers by diffusion map method, scaling operator, automatic localization of the center of macula, and calculation of mean and SD.Findings: The maximum of average RNFL and total RETINA thickness in right and left eyes is seen in the perifoveal nasal, and the minimum is seen in the fovea. The results demonstrate an overall symmetry between the two eyes (P>0.05). Tolerance limits in RNFL of normal subjects for 9 sectors (from 1 to 9), respectively, are 1.16±0.99, 2.43±1.57, 3.96±2.08, 1.11±1.09, 2.83±1.66, 3.09±1.39, 4.91±1.79, 0.82±1.25, and 3.31±1.63 mm. Tolerance limits in total RETINA of normal subjects for 9 sectors, respectively, are 9.84±2.75, 3.60±2.74, 4.82±3.23, 3.33±1.76, 6.51±3.69, 3.23±1.30, 5.96±2.62, 2.79±1.42, 6.72±2.57 μm.Conclusion: ASYMMETRY ANALYSis can be a criterion for early detection of diseases. In this study ASYMMETRY ANALYSis and tolerance limits were calculated.

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APA: Copy

MAHMUDI, TAHEREH, KAFIEH, RAHELEH, RABBANI, HOSSEIN, MEHRI DEHNAVI, ALIREZA, AKHLAGHI, MOHAMMAD REZA, ARBABIAN, KHATEREH, & AHMADI, MOHAMMAD. (2013). EVALUATION OF ASYMMETRICITY OF RETINAL NERVE FIBER LAYER AND TOTAL RETINA IN RIGHT AND LEFT EYES OF NORMAL SUBJECTS USING EXTRACTED FEATURES FROM OPTICAL COHERENCE. JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S), 31(247), 1185-1193. SID. https://sid.ir/paper/49848/en

Vancouver: Copy

MAHMUDI TAHEREH, KAFIEH RAHELEH, RABBANI HOSSEIN, MEHRI DEHNAVI ALIREZA, AKHLAGHI MOHAMMAD REZA, ARBABIAN KHATEREH, AHMADI MOHAMMAD. EVALUATION OF ASYMMETRICITY OF RETINAL NERVE FIBER LAYER AND TOTAL RETINA IN RIGHT AND LEFT EYES OF NORMAL SUBJECTS USING EXTRACTED FEATURES FROM OPTICAL COHERENCE. JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S)[Internet]. 2013;31(247):1185-1193. Available from: https://sid.ir/paper/49848/en

IEEE: Copy

TAHEREH MAHMUDI, RAHELEH KAFIEH, HOSSEIN RABBANI, ALIREZA MEHRI DEHNAVI, MOHAMMAD REZA AKHLAGHI, KHATEREH ARBABIAN, and MOHAMMAD AHMADI, “EVALUATION OF ASYMMETRICITY OF RETINAL NERVE FIBER LAYER AND TOTAL RETINA IN RIGHT AND LEFT EYES OF NORMAL SUBJECTS USING EXTRACTED FEATURES FROM OPTICAL COHERENCE,” JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S), vol. 31, no. 247, pp. 1185–1193, 2013, [Online]. Available: https://sid.ir/paper/49848/en

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