Increase in retinal thickness is an integral part of retinal diseases and its measurements are thus essential for early detection, diagnosis, treatment and monitoring of retinal disorders, particularly diabetic macular edema. None of the traditional diagnostic tools are able to address the need for an objective and reliable quantitative assessment of retinal thickness(5).
The RTA’s accurate and objective retinal thickness maps, optical cross sections and digital fundus images are particularly useful in the evaluation of subtle thickness changes, quantification of alterations of retinal thickening in areas of pathology, and in measuring the proximity of retinal thickening to the fovea(6). The RTA significantly improves the early diagnosis of macular edema, the determination of areas in need of treatment and the assessment of the results of current and new treatment modalities (7).
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Reference
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Lobo CL, Bernardes RC, Cunha-Vaz JG. Alterations of the blood-retinal barrier and retinal thickness in preclinical retinopathy in subjects with type 2 diabetes. Arch Ophthalmol 2000;118(10):1364-9.
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| 6. |
Pires I, Bernardes RC, Lobo CL, et al. Retinal thickness in eyes with mild nonproliferative retinopathy in patients with type 2 diabetes mellitus: comparison of measurements obtained by retinal thickness analysis and optical coherence tomography. Arch Ophthalmol 2002;120(10):1301-6.
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| 7. |
Yang Y, Vitale S, Ding Y, O’Connell SR, Alexander J, Bressler NM, Schachat AP, Zeimer R. “A comparison of quantitive mapping and stereoscopic fundus photography grading of retinal thickness in diabetic eyes with macular edema.” Ophthalmic Surgery, Lasers & Imaging 2003; Jan/Feb; Vol 34 (1): 7-16
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