scholarly journals The Role of Optical Coherence Tomography Signal Strength in the Diagnosis and Follow-up of Patients with Posterior Capsular Opacification Treated with Nd:YAG Laser Capsulotomy

2020 ◽  
Vol 50 (1) ◽  
pp. 1-5
Author(s):  
Mustafa Vatansever ◽  
Erdem Dinç ◽  
Özer Dursun ◽  
Ufuk Adıgüzel ◽  
Ayça Yılmaz ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Nd:Yag Laser ◽  
Signal Strength ◽  
Posterior Capsular Opacification ◽  
Optical Coherence ◽  
Optical Coherence Tomography Signal ◽  
Nd:Yag Laser Capsulotomy

scholarly journals OPTICAL COHERENCE TOMOGRAPHY-ANGIOGRAPHY, A NEW DIAGNOSTIC AND FOLLOW-UP TOOL FOR GLAUCOMA: OPTICAL COHERENCE TOMOGRAPHY-ANGIOGRAPHY

2021 ◽  
pp. 45-51
Author(s):  
Sibel İnan ◽  
Ümit Übeyt İnan
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Nerve ◽  
Optical Coherence Tomography Angiography ◽  
Vascular Dysfunction ◽  
New Technology ◽  
Optical Coherence ◽  
Vascular Effects ◽  
Advanced Glaucoma

Glaucoma is an optic neuropathy and is one of the leading causes of irreversible blindness worldwide. There are studies on the role of vascular dysfunction in the pathogenesis of glaucoma. Evaluation of intraocular blood flow will be useful in elucidating the pathogenesis. Various techniques are available for the diagnosis and follow-up of patients with glaucoma. Optical coherence tomography angiography (OCTA) has emerged as new technology to detect the vascular effects of glaucoma. Objectives: Optical coherence tomography angiography is a new technology and many publications have been made in the field of glaucoma. In this article, we aimed to review the studies conducted on the role of OCTA technology in glaucoma pathogenesis and to draw attention to how OCTA can be helpful for diagnosis and follow-up in glaucoma patients. Methods: Whole literature through PubMed for the keywords of optical coherence tomography angiography (OCTA) and glaucoma were scanned. This review included articles up to February 2021. Only English languages articles were included. Results: Optical coherence tomography angiography provides a rapid and noninvasive quantitative assessment of the microcirculation of the retina, optic nerve, and choroid. Optical coherence tomography angiography uses the action of red blood cells as an intrinsic contrast agent. It has high reproducibility. Optical coherence tomography angiography studies have shown that microcirculation in the superficial optic nerve, peripapillary retina, and the macula is reduced in glaucoma patients. Optical coherence tomography angiography parameters in the peripapillary region are thought to be better biomarkers in advanced glaucoma than OCT parameters. Conclusion: Optical coherence tomography angiography is a new technology that has the potential to provide useful information in the diagnosis and follow-up of patients with glaucoma.

scholarly journals Role of Optical Coherence Tomography (OCT) in Early Detection of Subclinical Cystoid Macular Edema after Nd-YAG Laser Capsulotomy

2020 ◽  
Vol 37 (1) ◽  
Author(s):  
Muhammad Adnan Shaikh ◽  
Shela Dareshani ◽  
Khowaja Faiz-ur-Rab ◽  
Tariq Saleem ◽  
Mazhar Ali
Keyword(s):  
Optical Coherence Tomography ◽  
Early Detection ◽  
Cataract Surgery ◽  
Macular Edema ◽  
Cystoid Macular Edema ◽  
Posterior Capsular Opacification ◽  
Optical Coherence ◽  
Age Group ◽  
Yag Laser

Purpose:  To determine role of optical coherence tomography (OCT) in early detection of subclinical cystoid macular edema (CME) after Nd-YAG laser capsulotomy in patients with posterior capsular opacification (PCO). Study Design:  Descriptive case-series. Place and Duration of Study:  Department of Ophthalmology Unit 1, Dow University of Health Sciences and Civil Hospital Karachi from 1-July-2015 to 31-Dec-2015. Methods:  A total of 72 eyes with unilateral or bilateral visually significant PCO following uncomplicated cataract surgery with posterior chamber intraocular lens implantation were included in the study. Patients with corneal opacities, glaucoma, retinopathy, maculopathy, optic neuropathy, complicated cataract surgery, previous ocular surgery other than cataract surgery and High refractive errors were excluded from the study. Best-corrected visual acuity (BCVA), Slit lamp examination, posterior segment examination and macular thickness was measured using spectral domain (TOPCON 3D OCT) optical coherence tomography before laser and at 1 week and at 1 month after laser. Results:   Mean age was 55.76 ± 5.28 with Confidence interval of 55.02 – 56.49 years. Eighty-one were males and 122 were females. Subclinical cystoid macular edema (CME) was found in 10 (14%) patients. Out of the patients who had CME, 3 were in age group of 40-55 years and seven were in age group of 56-70 years. P value was found to be significant i.e. (P = 0.039). Conclusion:  Optical coherence tomography OCT is a non invasive and useful tool for early detection and management of subclinical cystoid macular edema after Nd-YAG laser capsulotomy in patients having posterior capsular opacification (PCO). Key Words:  Cystoid Macular Edema, Nd-YAG laser, Posterior Capsular Opacification. Optical Coherence Tomography (OCT).

scholarly journals A Study of Nd:YAG Laser Capsulotomy in the Management of Posterior Capsular Opacification

2016 ◽  
Vol 3 (1) ◽  
pp. 18
Author(s):  
Mrunal Suresh Patil ◽  
Dhiraj Namdeo Balwir ◽  
Swapnil Vidhate
Keyword(s):  
Visual Acuity ◽  
Nd:Yag Laser ◽  
Visual Outcome ◽  
Detailed Examination ◽  
Posterior Capsular Opacification ◽  
Exclusion Criteria ◽  
Posterior Capsulotomy ◽  
Transient Rise ◽  
Nd:Yag Laser Capsulotomy

<strong>Aims:</strong> To study the visual outcome following Nd:YAG laser posterior capsulotomy and to study the complications associated with Nd:YAG laser posterior capsulotomy. <strong>Material and Methods:</strong> The study included a total of 100 eyes of 100 patients who fulfilled the inclusion and exclusion criteria. Once diagnosed to have posterior capsular opacification they were subjected to a detailed clinical examination. All patients underwent Nd:YAG laser capsulotomy. Patients were followed up at 1 hour, 4 hour, 1 day, 1 week, 1 month, 3 month. At every follow up detailed examination was done. BCVA and any complications were noted. <strong>Results:</strong> Post-laser, 87% patients had BCVA 6/12 or more at 3 month follow up. 10% patients had BCVA 6/24 to 6/18. Only 3% patients had visual acuity improved to less than 6/24. Out of 3 patients, 1 patient had visual acuity improved to 6/60&amp;in remaining 2 visual acuity improved to 6/36. The complications were seen in 31 (31%) patients. Most common complication observed was transient rise in IOP. 17 eyes (17%) had transiently raised IOP. Second most common noted was pitting of IOL. Pitting was present in 7 (7%) patients, 3 (3%) patients had ruptured anterior face of vitreous, 2 (2%) patients had iritis, 1 (1%) had hyphema and 1 (1%) developed CME. IOP rise was related to grade of PCO and energy used.<strong> Conclusion:</strong> Improvement in visual acuity after Nd:YAG laser posterior capsulotomy is excellent. Complications associated with Nd:YAG laser capsulotomy are minimal. Nd: YAG laser capsulotomy is a safe method of restoring vision in patients with posterior capsule opacification.

Role of Enhanced Depth Imaging Optical Coherence Tomography in the Diagnosis and Follow-up of Presumed Choroidal Tuberculomas

2016 ◽  
Vol 24 (6) ◽  
pp. 702-704
Author(s):  
Beyza Tezel ◽  
Hind El Ouardighi ◽  
Zaid Aouchar ◽  
Laure Caspers ◽  
Francois Willermain ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Enhanced Depth Imaging ◽  
Optical Coherence ◽  
Depth Imaging ◽  
Imaging Optical Coherence Tomography

scholarly journals Safety and efficacy of Nd:YAG laser capsulotomy in management of posterior capsular opacification

2019 ◽  
Vol 6 (1) ◽  
pp. 76 ◽  
Author(s):  
Pratima Sahu ◽  
Amit Kumar Mishra
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Nd:Yag Laser ◽  
Tertiary Hospital ◽  
Posterior Capsular Opacification ◽  
Common Complication ◽  
Safety And Efficacy ◽  
Nd:Yag Laser Capsulotomy ◽  
Defective Vision

Background: At present, the only effective treatment of posterior capsular opacification (PCO), which is the most common complication of modern cataract surgery, is Neodymium-Yttrium Aluminum Garnet (Nd:YAG) laser capsulotomy. There are few complications associated with this easy and quick laser capsulotomy. The current study was conducted in a tertiary hospital of Odisha with an objective to find the safety and efficacy of Nd:YAG laser capsulotomy in the management of defective vision due to posterior capsular opacity.Methods: The study was conducted among the patients attending the Ophthalmology out patient department of a tertiary hospital in Odisha with defective vision due to posterior capsular opacity after cataract surgery. Nd:YAG laser capsulotomy was carried out in all patients with significant PCO. Visual acuity and intraocular pressure were recorded before and after the procedure. The cases were carefully followed up and looked for any complication and visual acuity was assessed during follow up visits.Results: In the study 184 participants were included. Visual improvement was observed in 97.8% participants. Visual acuity improved to 6/6 in 21.73 %, 6/9 in 36.41 % cases, 6/12 in 15.21 % cases. Raised IOP was recorded among 46% of participant after 4 hrs of laser capsulotomy which was later observed among 12% of participants on follow up visit at 1 week. The most common complication recorded was transient rise of IOP (46.3%) followed by aqueous flare (28.8%).Conclusions: Nd:YAG laser capsulotomy is a noninvasive, effective, relatively safe procedure for PCO with good visual outcome.

EFFECT OF MACULAR EDEMA ON OPTICAL COHERENCE TOMOGRAPHY SIGNAL STRENGTH

Retina ◽  
2010 ◽  
Vol 30 (7) ◽  
pp. 1084-1089 ◽  
Author(s):  
Hamid Hosseini ◽  
Mohammad Reza Razeghinejad ◽  
Sarah Nowroozizadeh ◽  
Peyman Jafari ◽  
Hossein Ashraf
Keyword(s):  
Optical Coherence Tomography ◽  
Macular Edema ◽  
Signal Strength ◽  
Optical Coherence ◽  
Optical Coherence Tomography Signal

Inner Retinal Morphology and Visual Outcomes in Idiopathic Epiretinal Membrane Surgery: A Retrospective Optical Coherence Tomography Study

2021 ◽  
pp. 247412642198961
Author(s):  
Ioannis S. Dimopoulos ◽  
Michael Dollin
Keyword(s):  
Optical Coherence Tomography ◽  
Epiretinal Membrane ◽  
Strong Predictor ◽  
Plexiform Layer ◽  
Inner Plexiform Layer ◽  
Optical Coherence ◽  
Visual Outcomes ◽  
Retinal Pathology

Purpose: Epiretinal membrane (ERM) is a common retinal finding for patients older than 50 years. Disorganization of the retinal inner layers (DRIL) has emerged as a novel predictor of poor visual acuity (VA) in eyes with inner retinal pathology. The aim of our study is to correlate preoperative DRIL with visual outcomes after ERM surgery. Methods: Medical records and optical coherence tomography (OCT) images of 81 pseudophakic patients who underwent treatment of idiopathic ERM were reviewed. Preoperative DRIL on OCT was correlated with VA at baseline and at 3 and 6 months after ERM surgery. DRIL was defined as the loss of distinction between the ganglion cell–inner plexiform layer complex, inner nuclear layer, and outer plexiform layer. DRIL severity was based on its extent within the central 2-mm region of a transfoveal B-scan (absent/mild: <one-third, severe: >one-third horizontal width). Results: Review of preoperative OCT showed severe DRIL in 41% and absent/mild DRIL in 59%. Severe DRIL was associated with worse baseline VA ( P < .001). Preoperative VA and DRIL status at baseline were both predictors of postoperative VA at follow-up time points ( P < .001). Severe DRIL was associated with significantly less improvement in VA at 6 months (–0.23 logMAR for absent/mild vs –0.14 for severe DRIL). Conclusions: Presence of severe preoperative DRIL correlates with worse baseline VA in patients with ERM and reduced VA improvement at 6 months. DRIL can be a strong predictor of long-term poor visual outcomes in ERM surgery.

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