1. Articles from Amar Pujari

    1-10 of 10
    1. Swept-source optical coherence tomography features of regressed macular retinoblastoma

      Swept-source optical coherence tomography features of regressed macular retinoblastoma

      Purpose: To describe the swept-source optical coherence tomography (SS-OCT) features of regressed macular retinoblastoma (RB). Methods: A cross-sectional observational study was carried out in 13 patients with regressed macular RB with good fixation in at least one eye. Fundus photography and SS-OCT were documented. High-resolution scans with good signal strength were selected. The types of clinical regression and SS-OCT characteristics of the regressed lesions (presence of vitreous detachment, intratumor schisis/cavitation, calcification, foveal dip, and OCT pattern) were noted. Results: Of the 13 eyes, 7 (53%) were group B, 4 (30%) were group C, and 2 (17%) were group D ...

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    2. Clinical, ultrasonographic and optical coherence tomography correlation of optic nerve head cupping in glaucoma patients

      Clinical, ultrasonographic and optical coherence tomography correlation of optic nerve head cupping in glaucoma patients

      Purpose: To ascertain if ultrasound (USG) B-scan examination of the optic nerve head (ONH) can be a useful tool to diagnose and quantify glaucomatous cupping. Methods: A cross-sectional observational study of 48 eyes of 48 patients with clear ocular media and cup-disc ratio of (CDR) ≥0.6 were included. The disc was studied by + 90D examination, USG B-scan and ONH Optical coherence tomography (OCT) by three masked observers. Observer-1 assessed the clinical CDR, observer-2recordedopticcup diameter on USG B-scan and observer-3performed ONH OCT to note the software computed average CDR. Measurements of cupping obtained by these 3 methods were compared and ...

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    3. Assessment of posterior capsular integrity on optical coherence tomography

      Assessment of posterior capsular integrity on optical coherence tomography

      The integrity of posterior capsule is of paramount importance to cataract surgeon. Careful preoperative assessment is routinely performed to avoid undesirable intraoperative complications. Routine slit-lamp-based assessment provides a detailed understanding of the posterior capsule, provided that lens matter is optically clear to an acceptable extent. However, the presence of opacity along the posterior capsule with a hidden defect such as posterior polar cataract may pose a challenge to decipher the intactness of the capsule. 1 Under such circumstances, noninvasive imaging modalities, such as anterior segment optical coherence tomography (OCT), is at surgeons rescue during the preoperative period. Therefore, here we ...

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    4. Intralenticular changes on optical coherence tomography in eyes with mature brown cataract

      Intralenticular changes on optical coherence tomography in eyes with mature brown cataract

      We modified the posterior segment optical coherence tomography (OCT) process to image anterior segment structures by keeping a 20.0 diopter lens along its aperture (Figure 1, A ). We were measuring the central corneal thickness using this technique and we noticed some empty pockets within the anterior lens matter. We discuss these findings in 2 cases.

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    5. Assessment of macular vascular plexus density using optical coherence tomography angiography in cases of strabismic amblyopia

      Assessment of macular vascular plexus density using optical coherence tomography angiography in cases of strabismic amblyopia

      Purpose: To evaluate the superficial retinal vascular plexus density using optical coherence tomography angiography (OCTA) in cases of strabismic amblyopia. Methods: Ten eyes of 10 patients with purely strabismic amblyopia underwent detailed ocular evaluation followed by the assessment of the superficial retinal plexus vascular density using OCTA (Topcon DRI OCT Triton, Swept Source OCT, Topcon, Japan). Ten contralateral normal eyes of the same patients were considered as control. All these 20 eyes underwent a 4.5 × 4.5 mm cube scan OCTA centered at the fovea. Using the Topcon propriety software all 20 eyes were assessed for the capillary plexus ...

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    6. Intraoperative assessment of corneal injuries using microscope-integrated optical coherence tomography

      Intraoperative assessment of corneal injuries using microscope-integrated optical coherence tomography

      A 2-year-old male child presented to the ocular emergency following penetrating injury with a metallic foreign body. Clinical examination revealed a nasal corneal perforation with iris tissue prolapse [ [Figure 1] , yellow arrow ]. To further delineate the extent of the corneal perforation and associated anterior segment changes, integrated optical coherence tomography (iOCT) was used. It showed corneal wound gaping for entire corneal thickness from the paracentral region to the periphery of the cornea. Within the gaping, prolapsing hyperreflective tissue was made out in continuity with the iris tissue onto the surface of the epithelium, suggestive of iris tissue [Figure 2] a ...

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    7. Intraoperative optical coherence tomography-guided scleral suture passage while performing surgery on extraocular muscles

      Intraoperative optical coherence tomography-guided scleral suture passage while performing surgery on extraocular muscles

      Sir, Microscope-integrated intraoperative optical coherence tomography (iOCT, 2 mm depth penetration) helps in achieving the optimal results by providing the real-time images of tissue manipulation during the surgery. The iOCT is of great value while performing lamellar corneal surgeries, cataract surgeries, and intraocular lens implantation surgery. [1] , [2] It has also been noted to provide an advantage during placement of the glaucoma drainage devices in cadaveric eyes and needling of the blebs. [3] , [4] Pasricha et al . described the four-dimensional visualizations of the muscle and the scleral wound while passing the scleral sutures. [5] A 45-year-old male patient with alternate ...

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    8. Ocular toxicity due to colours used during Holi celebration in India: Correlation of clinical findings with the anterior segment OCT

      Ocular toxicity due to colours used during Holi celebration in India: Correlation of clinical findings with the anterior segment OCT

      Purpose: To correlate the anatomical extent of ocular surface toxicity due to colours using anterior segment optical coherence tomography with the clinical findings. Methods: Patients presenting to our emergency department with ocular colour toxicity during the Holi festival celebrations from 2 nd March 2018 to 5 th March 2018 were assessed for any adnexal, conjunctival, corneal and anterior chamber findings, as well as findings on anterior segment optical coherence tomography (ASOCT). Results: A total of 21 patients were observed. The average age was 23 years with 16 patients being male (76.19%). Bilateral ocular involvement was more common (in 13 ...

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    9. 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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    10. Surgical removal of a giant iris stromal cyst: an intraoperative optical coherence tomography-guided approach

      Surgical removal of a giant iris stromal cyst: an intraoperative optical coherence tomography-guided approach

      An 11-year-old girl was brought with the chief complaint of progressive diminution of vision in her right eye for the past 3 months. There was no history of ocular trauma or any ocular surgery. Systemic and family history was insignificant. Visual acuity was 20/20 in her left eye and counting finger close to face with projection of rays being accurate in her right eye. Slit lamp examination of her right eye showed large cystic lesion filling almost entire anterior chamber. With the help of various imaging modalities like anterior segment optical coherence tomography (OCT) and ultrasound biomicroscopy diagnosis of ...

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    1-10 of 10
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    Surgical removal of a giant iris stromal cyst: an intraoperative optical coherence tomography-guided approach Retinal Arteriovenous Malformation Assessment Using Swept-Source OCT Angiography Ocular toxicity due to colours used during Holi celebration in India: Correlation of clinical findings with the anterior segment OCT Intraoperative assessment of corneal injuries using microscope-integrated optical coherence tomography Intraoperative optical coherence tomography-guided scleral suture passage while performing surgery on extraocular muscles Assessment of macular vascular plexus density using optical coherence tomography angiography in cases of strabismic amblyopia Intralenticular changes on optical coherence tomography in eyes with mature brown cataract Assessment of posterior capsular integrity on optical coherence tomography Clinical, ultrasonographic and optical coherence tomography correlation of optic nerve head cupping in glaucoma patients Swept-source optical coherence tomography features of regressed macular retinoblastoma Postdoctoral Fellow / Research Fellow at The Australian National University, Canberra Stress, anxiety, harassment: huge survey reveals pressures of scientists’ working lives