1. Articles from Amar Pujari

    1-23 of 23
    1. Defining the Clinical Role of Swept-Source Anterior Segment Optical Coherence Tomography in Eyes Undergoing Strabismus Surgery

      Defining the Clinical Role of Swept-Source Anterior Segment Optical Coherence Tomography in Eyes Undergoing Strabismus Surgery

      Purpose: To describe the clinical role of swept-source anterior segment optical coherence tomography in extraocular muscle imaging in various strabismic conditions. Study Design: Prospective observational study. Participants: A total of 1104 extraocular muscles of 150 subjects were imaged. Normal eyes (640 muscles), eyes undergoing re-operation (240 muscles), paralytic strabismic eyes (16 muscles), non-paralytic strabismic eyes (20 muscles), post-traumatic strabismic eyes (64 muscles), eyes with thyroid disease (64 muscles), and other atypical cases (60 muscles) were imaged. In all cases, up to four recti muscles were evaluated in a given eye depending on the need. Results: The mean age was 38 ...

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    2. Optical coherence tomography angiography in amblyopia: A critical update on current understandings and future perspectives

      Optical coherence tomography angiography in amblyopia: A critical update on current understandings and future perspectives

      Optical coherence tomography angiography (OCTA) is a non-invasive tool to assess the retino-choroidal vasculature in vivo. It tracks the red blood cell movement and maps the vasculature in quick succession. In routine, diabetic retinopathy, age related macular degeneration, central serous chorioretinopathy, and others are commonly being studied to unveil its clinic role. On the other hand, amblyopia is a condition where the visual acuity is subnormal due to non-organic causes in the eye. But the OCTA studies till now have shown variable changes along retino-choroidal vasculature. Hence, to comprehend the existing literature knowledge, a systematic literature search was carried out ...

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    3. Clinical Role of Swept Source Anterior Segment Optical Coherence Tomography in Strabismus Re-Operation with Lost Surgical Details

      Clinical Role of Swept Source Anterior Segment Optical Coherence Tomography in Strabismus Re-Operation with Lost Surgical Details

      Background: To characterize the diagnostic role of swept source anterior segment optical coherence tomography (SS-ASOCT) in strabismus re-operations with lost surgical details. Methods: Patients presenting to our outpatient services for strabismus care from February 2020 to March 15th 2021 were systematically evaluated. Those willing to undergo re-operation were included in the study. A total of 30 patients were identified and out of this a total of 10 eyes of 10 patients with lost surgical details were finally included in the study. Demographic details, preoperative deviation, ocular findings, orthoptic measurements, detailed SS-ASOCT findings, intraoperative measurements, and post-operative outcomes were recorded. Results ...

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    4. Optical coherence tomography angiography in central serous chorioretinopathy: The current clinical role and future perspectives

      Optical coherence tomography angiography in central serous chorioretinopathy: The current clinical role and future perspectives

      Optical coherence tomography angiography (OCTA) images the layers of retinal and choroidal vasculature in the absence of an injectable dye. Since its introduction, OCTA has been utilized in various posterior segment diseases, including central serous chorioretinopathy (CSCR). We provide a comprehensive review of OCTA's application to CSCR published between 2014 and 2020.

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    5. Clinical role of swept source optical coherence tomography in anterior segment diseases: a review

      Clinical role of swept source optical coherence tomography in anterior segment diseases: a review

      Purpose: To note the comprehensive role of swept source anterior segment optical coherence tomography (SS-ASOCT) in anterior segment diseases. Methods: A systematic literature search was carried out on various medical databases using the keywords, swept source anterior segment optical coherence tomography; SS-ASOCT; Cornea and SS-ASOCT; SS-ASOCT and glaucoma; SS-ASOCT and cataract; SS-ASOCT and biometer; SS-ASOCT and tear film and ocular surface.Original works and novel reports describing the potential role of SS-ASOCT in various anterior segment conditions were included. Results: After a thorough assessment of literature, it was clear that the SS-ASOCT did provide newer insights into many anterior eye ...

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    6. The Emerging Role of Anterior Segment Optical Coherence Tomography in Cataract Surgery: Current Role and Future Perspectives

      The Emerging Role of Anterior Segment Optical Coherence Tomography in Cataract Surgery: Current Role and Future Perspectives

      Modern-day cataract surgery has achieved equivalence with refractive surgery, thus requiring surgeons to perform all possible pre-emptive exercises to mitigate intraoperative complications. In this direction, we possess a tremendous amount of technology to understand the preoperative status of the lens. Anterior segment optical coherence tomography (ASOCT) is one such tool, which has played a distinctive role in imaging various forms of cataracts. In this review, we critically analyse the practical role of ASOCT in the preoperative and intraoperative periods from a cataract surgeon’s perspective. After a thorough literature assessment, it was substantiated that the cross-sectional imaging ability of ASOCT ...

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    7. Study 3: Assessment of events during surgery on posterior polar cataracts using intraoperative optical coherence tomography

      Study 3: Assessment of events during surgery on posterior polar cataracts using intraoperative optical coherence tomography

      Purpose: To describe the changes along nucleo-epinuclear and the opacity-capsular junction during hydrodelineation and the entire period of phacoemulsification using intraoperative optical coherence tomography (iOCT). Methods: A total of 12 eyes of 12 patients with clinically confirmed posterior polar cataract, who underwent cataract surgery by a single surgeon under the direct guidance of iOCT. The changes along nucleo-epinuclear junction and opacity-capsular junction during/following hydrodelineation and the changes along the opacity-capsular junction following nucleus removal, capsular changes before the opacity removal, and its dynamic changes throughout the surgical procedure were studied. Results: The mean age of patients was 48.25 ...

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    8. OCTA in neuro-ophthalmology: Current clinical role and future perspectives

      OCTA in neuro-ophthalmology: Current clinical role and future perspectives

      Optical coherence tomography angiography (OCTA) is a non-invasive, depth-resolved imaging tool for the appraisement of retinal vascular changes. Since its introduction, the understanding of diabetic retinopathy, age-related macular degeneration, central serous retinopathy and other diseases has been enriched on many fronts. Its dye-less imaging property maps retinal as well as deeper choroidal vasculature in quick succession with good reproducibility. Hence, it can play an important role in the diagnosis and management of optic nerve-related diseases as well. A detailed literature review for its role in non-arteritic anterior ischemic optic neuropathy, papilledema, optic disc drusen, papillitis, hereditary optic neuropathies, central nervous ...

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    9. Intralenticular changes in eyes with mature senile cataract on modified posterior segment optical coherence tomography

      Intralenticular changes in eyes with mature senile cataract on modified posterior segment optical coherence tomography

      Purpose: To study the morphological changes within mature senile cataracts on modified posterior segment optical coherence tomography (OCT). Methods: A cross-sectional observational study recruiting patients of mature cataracts admitted for elective cataract surgery in tertiary eye care. A modified OCT imaging of the lens was done and lenticular findings were noted by a single observer. Corresponding slit-lamp biomicroscopic findings and intraoperative experiences were also noted by a second observer and respective surgeons. Results: Forty-four eyes of 44 patients were included. The mean age of patients was 65 ± 5.7 years. The intralenticular findings were uniform in groups of eyes, and ...

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    10. Intraoperative Optical Coherence Tomography Guided Ocular Surgeries: Critical Analysis of Clinical Role and Future Perspectives

      Intraoperative Optical Coherence Tomography Guided Ocular Surgeries: Critical Analysis of Clinical Role and Future Perspectives

      Intraoperative imaging of ocular tissues for diagnostic and therapeutic applications has gained immense admiration in recent years. The real time cross-sectional imaging, as well as three and four dimensional reconstruction abilities of intraoperative optical coherence tomography (iOCT), has enhanced our knowledge on many fronts in surgical maneuvers. In this review, we discuss the iOCT discovered constructive knowledge in the cornea, cataract, refractive, glaucoma, pediatric ocular, and various retinal conditions. The practical utility with decision modifying aspects along the specified ocular tissues and with respect to specific ocular entities have been narrated. Moreover, limitations and future directions have also been emphasized ...

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    11. Evaluation of the signs of deficient posterior capsule in posterior polar cataracts using anterior segment optical coherence tomography

      Evaluation of the signs of deficient posterior capsule in posterior polar cataracts using anterior segment optical coherence tomography

      Purpose: To systematically observe and analyze the signs of deficient posterior capsule in posterior polar cataracts. Design: Ambispective observational study. Participants: Cases with posterior polar cataracts. Methods: Eyes with diagnosed posterior polar cataracts were imaged on anterior segment optical coherence tomography. A detailed assessment was performed to note the morphology of the posterior opacity, posterior capsule, and the common patterns to indicate their abnormality. In addition, generalized observation of the morphology was also performed with respect to intraoperative surgical experiences. Results: A total of 101 eyes were included. The average patient age was 52.85 ± 10.72 years. The posterior ...

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    12. Intraoperative optical coherence tomography-guided assessment of hydro-dissection procedure during cataract surgery

      Intraoperative optical coherence tomography-guided assessment of hydro-dissection procedure during cataract surgery

      Patients posted for phacoemulsification underwent initial steps of wound construction and a continuous curvilinear capsulorhexis in a routine manner. Following this, microscope-integrated intraoperative optical coherence tomography (MIOCT) was focused along with the posterior cortical-capsular interface [Figure 1] a and the surgeon performed a smooth hydro-dissection using a 27-gauge cannula mounted on a 2-cc syringe filled with balanced salt solution (BSS). The injected BSS jet traveled just underneath the anterior capsule and along with adjacent cortical matter till the equator. The dissection jet force then took a posterior course to reach the posterior pole of the cataractous lens. During this first ...

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    13. 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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    14. 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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    15. 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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    16. 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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    17. 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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    18. 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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    19. 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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    20. 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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    21. 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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    22. 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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    23. 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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    1-23 of 23
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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 Swept-source optical coherence tomography features of regressed macular retinoblastoma Evaluation of the signs of deficient posterior capsule in posterior polar cataracts using anterior segment optical coherence tomography New insights from non-invasive imaging: from prospection of skin photodamages to training with mobile application Short-sighted woman assumes debilitating headaches mean she needs new glasses but discovers she has multiple sclerosis