1. Articles from Ashish Markan

    1-4 of 4
    1. Bacillary layer detachment in tubercular choroidal granuloma: A new optical coherence tomography finding

      Bacillary layer detachment in tubercular choroidal granuloma: A new optical coherence tomography finding

      A 32-year-old Asian Indian male presented with sudden-onset and painless decrease in vision in the right eye (OD) for the past 1 day. On examination, his best-corrected visual acuity was 6/24 in OD and 6/6 in the left eye (OS). Anterior segment was quiescent in both eyes. Fundus examination showed ill-defined yellowish subretinal lesions inferior to fovea with surrounding fluid reaching the inferior arcade in OD. A cystic lesion with well-defined borders was seen in the foveal center. Fluorescein angiography (FA) showed early hypofluorescence and late hyperfluorescence indicating active choroidal inflammation. Pooling of dye was appreciated in the ...

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      Mentions: Vishali Gupta
    2. Age-related changes in macular vessels and their perfusion densities on optical coherence tomography angiography

      Age-related changes in macular vessels and their perfusion densities on optical coherence tomography angiography

      Purpose: To evaluate age-related changes in macular vessels and their perfusion densities using optical coherence tomography angiography (OCTA). Methods: A total of 108 eyes of 54 healthy subjects between the age group of 11 to 60 years having unaided visual acuity of 20/20 were studied on spectral domain OCTS using 3 * 3 mm macula protocol. These subjects were divided into 5 groups; Group 1: 11–20 years, Group 2: 21–30 years, Group 3: 31–40 years, Group 4: 41–50 years, and Group 5: 51–60 years. An early treatment diabetic retinopathy study (ETDRS) grid overlay at the ...

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    3. Retinal Arteriovenous Malformation Assessment Using Swept-Source OCT Angiography

      Retinal Arteriovenous Malformation Assessment Using Swept-Source OCT Angiography

      Swept-source optical coherence tomography angiography (SS-OCTA) is a promising new imaging modality for assessing retinal and choroidal vasculature. Faster scanning speed, large number of A-scan acquisition, and enhanced depth penetration has enhanced the detailed analysis of retinal layers. The authors discuss SS-OCTA features of a rare case of retinal arteriovenous malformation. Image analysis revealed the anomalous large-caliber vessels occupying up to the entire retinal thickness with associated echolucent changes in the inner retinal layers surrounding the retinal vessels, along with disruption of the outer retinal layers, including the inner/outer segments of photoreceptors beneath the large tortuous vessels outside the ...

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    4. Utility of microscope-integrated optical coherence tomography (MIOCT) in the treatment of myopic macular hole retinal detachment

      Utility of microscope-integrated optical coherence tomography (MIOCT) in the treatment of myopic macular hole retinal detachment

      Macular hole-associated retinal detachment in high myopia is described as a final stage in progression of myopic traction maculopathy (MTM). 1–3 Shimada et al 4 described the progressive stages of MTM from macular retinoschisis to serous retinal detachment in high myopia. Stage 4 MTM is characterised as disappearance of retinoschisis with progression to retinal detachment due to macular hole formation. It is hypothesised that vitreoschisis and abnormal vitreo-retinal interface create the premacular tangential traction. 5 6 Intraoperative triamcinolone acetonide is used to visualise the residual posterior vitreous cortex (PVC). We hereby describe the utility of microscope-integrated optical coherence tomography ...

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    1-4 of 4
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  2. Topics in the News

    1. (2 articles) Massachusetts General Hospital
    2. (1 articles) L V Prasad Eye Institute
    3. (1 articles) Vishali Gupta
    4. (1 articles) Harvard University
    5. (1 articles) The Chinese University of Hong Kong
    6. (1 articles) University of Miami
    7. (1 articles) VU University Amsterdam
    8. (1 articles) David A. Boas
    9. (1 articles) Brett E. Bouma
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    11. (1 articles) Frank D. Verbraak
    12. (1 articles) Apollo Medical Optics
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    Utility of microscope-integrated optical coherence tomography (MIOCT) in the treatment of myopic macular hole retinal detachment Retinal Arteriovenous Malformation Assessment Using Swept-Source OCT Angiography Age-related changes in macular vessels and their perfusion densities on optical coherence tomography angiography Bacillary layer detachment in tubercular choroidal granuloma: A new optical coherence tomography finding Optical Coherence Tomography: Critical Tool to Manage Expectations after Cataract Extraction Improving the characterization of ex vivo human brain optical properties using high numerical aperture optical coherence tomography by spatially constraining the confocal parameters Choroidal, macular and ganglion cell layer thickness assessment in Caucasian children measured with spectral domain optical coherence tomography Examination of retinal vascular density changes via optical coherence tomography angiography in patients with glaucoma 3D reconstruction of coronary artery bifurcations from coronary angiography and optical coherence tomography: feasibility, validation, and reproducibility Age- and refraction-related changes in anterior segment anatomical structures measured by swept-source anterior segment OCT The evaluation of juvenile ocular hypertension by optical coherence tomography angiography Superficial capillary perfusion on optical coherence tomography angiography differentiates moderate and severe nonproliferative diabetic retinopathy