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Explaining "unexplained Visual Loss" with Optical Coherence Tomography.

Author(s)
Hina Khan Amanat Eye Hospital, Rawalpindi, Pakistan
Aamir Asrar Amanat Eye Hospital, Rawalpindi, Pakistan
Muhammad Siddique Sheikh Zayed Hospital Rahim Yar Khan, Pakistan
Sumaira Amir Joya Amanat Eye Hospital, Rawalpindi, Pakistan
Maria Akhtar Amanat Eye Hospital, Rawalpindi, Pakistan
Abstract
Purpose: To determine various pathologies detected by Optical Coherence Tomography (OCT) in patients with Unexplained Visual Loss (UVL). Study Design: A retrospective case review. Place and Duration: Amanat Eye Hospital from October 2014 to October 2015. Material and Methods: All cases of UVL were scanned on Heidelberg Spectralis Spectral Domain OCT machine on EDI mode. The scans so obtained were evaluated for a possible pathology that was responsible for the visual loss. Frequency tables were charted on this basis. Results: 83 patients with unexplained visual loss and apparently normal fundi were reviewed. In 37 cases, a definitive diagnosis was provided with the help of OCT imaging. 10 (27.03%) patients showed vitreomacular traction, 5 (13.51%) showed epiretinal membranes, 4 (10.81%) showed early stages of macular hole, 2 (5.4%) showed lamellar holes, 3 (8.1%) showed idiopathic macular telangiectasia, 4 (10.81%) were children with cone dystrophy and there were single cases (2.7%) each of Juvenile X-linked Retinoschisis, retinal arteritis, Acute macular neuroretinopathy and solar maculopathy. 5 (13.51%) patients showed a selective foveal atrophy of one or both eyes but the cause could not be determined. 46 patients with unexplained visual loss showed a normal OCT. Conclusion: OCT was able to identify various retinal pathologies in patients with UVL that was missed on fundus exam. With its help, a wide fraction of patients labeled with UVL were excluded from this obscure diagnosis.
Publication Details
Page(s) 9-15
DOI DOI not available
Published Journal: Pakistan Journal of Ophthalmology , Volume: 32, Issue: 1, Year: 2016

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Keywords
Vitreo-retinal diseases, visual loss, Ocular coherence tomography
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