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Normative Study to Correlate the Effects of Morphological Variables on Macular and Choroidal Thickness Using SD-OCT
Sumeet Chopra,
Preet Kanwar Singh Sodhi,
Akash Deep Goel,
Sehajpreet Kaur,
Gurkirat Singh Bajwa
Issue:
Volume 4, Issue 1, March 2019
Pages:
1-6
Received:
2 January 2019
Accepted:
21 January 2019
Published:
13 February 2019
Abstract: To determine macular and choroidal thickness in healthy north Indian eyes and determine its variation with age and height using SD-OCT. The macula of 400 randomly selected healthy subjects (800 eyes) with no retinal and choroidal pathology was imaged with Cirrus SD-OCT. Macular thickness from all 9 regions of Early Treatment Diabetic Retinopathy Study was evaluated. Choroid was visualized by enhanced depth imaging technique. Choroidal thickness was measured sub foveally and at 500 microns intervals upto 1500 microns temporal and nasal to the fovea. The mean age of the subjects was 33.60 years ± 14.033 and mean height was 163.5 cms ± 11.715. Mean central macular thickness (CMT) was 242.59 µm ± 16.802 and mean sub foveal choroidal thickness was 325.18 µm ± 47.087. CMT correlated significantly (Pearson’s correlation coefficient) with age (r=0.120, p<0.001) and height (r=0.258, p<0.001). Choroidal thickness decreased with age and the correlation was statistically significant. Choroidal thickness also decreased with height with a statistically significant correlation, but no specific pattern was found. This normative database of choroidal and macular thickness by OCT will serve as baseline for diagnosing retinal pathologies and help in future research.
Abstract: To determine macular and choroidal thickness in healthy north Indian eyes and determine its variation with age and height using SD-OCT. The macula of 400 randomly selected healthy subjects (800 eyes) with no retinal and choroidal pathology was imaged with Cirrus SD-OCT. Macular thickness from all 9 regions of Early Treatment Diabetic Retinopathy St...
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Clinical Differences Between Nonarteritic Anterior Ischemic Optic Neuropathy and Optic Neuritis in Chinese Patients: A Retrospective Comparative Case Series Study
Jun Chen,
Wanghua Zhao,
Zacharia Ackbarkhan,
Jianfeng He,
Yi Du
Issue:
Volume 4, Issue 1, March 2019
Pages:
7-13
Received:
6 January 2019
Accepted:
30 January 2019
Published:
25 February 2019
Abstract: The aim of this study is to compare the clinical features between nonarteritic anterior ischemic optic neuropathy (NAION) and optic neuritis (ON) in Chinese patients. The clinical features of 23 cases (23 eyes) of NAION and 62 cases (80 eyes) of ON, including their general conditions, manifestations, auxiliary examinations were retrospectively compared. Simultaneous onset of bilateral eye (29.03% vs. 0%, p=0.009) and pain on movement of the eyes (23.75% vs. 0%, p=0.022) were more common in ON patients in comparison to NAION patients. Ocular pain (32.5% vs. 4.35%, p=0.007) was higher in ON patients than that in NAION patients. Optic disc edema (100% vs. 62.5%, p<0.001), peripapillary hemorrhage (47.83% vs. 10%, p<0.001) and peripapillary hard exudates (17.39% vs. 1.25%, p=0.009) in NAION patients were more common compared to ON patients,. During fluorescein angiography, the rates of the partial or whole papillary hypofluorescent in early phase (65.21% vs. 22.86%, p<0.001), peripapillary choroidal filling delay (73.91% vs. 14.29%, p<0.001) and partial papillary hyperfluorescent in later phase (52.17% vs. 25.71%, p=0.019) were higher in NAION patients than those in ON patients. The clinical features of NAION and ON in Chinese patients reveal a surprising overlap and they still have some characteristic clinical features that can be utilized to differentiate the two diseases.
Abstract: The aim of this study is to compare the clinical features between nonarteritic anterior ischemic optic neuropathy (NAION) and optic neuritis (ON) in Chinese patients. The clinical features of 23 cases (23 eyes) of NAION and 62 cases (80 eyes) of ON, including their general conditions, manifestations, auxiliary examinations were retrospectively comp...
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The Current Status and New Research Progress of Keratoconus Treatment
Issue:
Volume 4, Issue 1, March 2019
Pages:
14-18
Received:
28 January 2019
Accepted:
13 March 2019
Published:
13 April 2019
Abstract: Keratoconus is a common non-inflammatory, bilateral progressive corneal dilatation disease, often leading to progressive thinning of the corneal stromal layer, the central region of the cornea is conical, clinical manifestations of high myopia and irregular astigmatism, The normal life of the patient is greatly inconvenient. Therefore, timely and effective treatment is extremely important to improve the visual quality of patients and their physical and mental health. In the early stage of the patient, vision correction can be performed by wearing a frame mirror or a contact lens; as the lesion progresses, the former is insufficient for correction, and corneal stroma implantation, corneal collagen cross-linking, and keratoplasty are feasible. Numerous studies have confirmed that this treatment can effectively improve and maintain the visual quality of patients. In recent years, new treatment methods such as matrix regeneration, matrix lens transplantation and scleral mirror have gradually become research hotspots at home and abroad. This article reviews the current major treatments for keratoconus and its new developments.
Abstract: Keratoconus is a common non-inflammatory, bilateral progressive corneal dilatation disease, often leading to progressive thinning of the corneal stromal layer, the central region of the cornea is conical, clinical manifestations of high myopia and irregular astigmatism, The normal life of the patient is greatly inconvenient. Therefore, timely and e...
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The Clinical Profile and Ocular Manifestations of Herpes Zoster Ophthalmicus- A Hospital Based Study
Prathibha Shanthaveerappa,
Remya Joseph Parappallil
Issue:
Volume 4, Issue 1, March 2019
Pages:
19-23
Received:
28 January 2019
Accepted:
22 March 2019
Published:
18 April 2019
Abstract: Background: Herpes Zoster Ophthalmicus (HZO) occurs due to reactivation of latent varicella zoster virus within the gasserian ganglion involving the ophthalmic division of the trigeminal nerve. HZO often has a chronic course with significant ocular morbidity as eye is considered potentially serious of all sites of herpes zoster owing to its delicate nature. Purpose:1. To study the mode of presentation, ocular manifestations and complications of herpes zoster ophthalmicus (HZO) 2. To analyse the predisposing factors for the development of HZO. Materials and Methods: A prospective clinical study was done in 20 patients who were clinically diagnosed with HZO in the outpatient department of ophthalmology over a period of one year. They were subjected to a detailed general and ocular examination and were treated medically with close follow up. Result: Advancing age was the most common risk factor. Acute neuralgia was the commonest presenting symptom (75%). Ocular involvement was seen in 16 patients with no bilaterality. Conjunctiva (60%) was the most common ocular structure involved followed by Cornea (45%). Anterior uveitis (20%) was complicated by haemorrhagic uveitis and orbital apex syndrome with total external ophthalmoplegia. Post herpetic neuralgia was the commonest complication seen. Conclusion: The potential manifestations of HZO are myriad. Development of serious inflammatory complications was associated with delay in therapy. Hence timely diagnosis and management are critical in limiting ocular morbidity
Abstract: Background: Herpes Zoster Ophthalmicus (HZO) occurs due to reactivation of latent varicella zoster virus within the gasserian ganglion involving the ophthalmic division of the trigeminal nerve. HZO often has a chronic course with significant ocular morbidity as eye is considered potentially serious of all sites of herpes zoster owing to its delicat...
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Role of Early Neuroimaging in Managing Acute Isolated Ocular Motor Nerve Palsies
Tal Paz,
Niv Levy,
Hana Leiba,
Daniel Rappoport
Issue:
Volume 4, Issue 1, March 2019
Pages:
24-29
Received:
28 April 2019
Accepted:
30 May 2019
Published:
11 June 2019
Abstract: Background: The role of early neuroimaging in older vasculopathic patients presenting with acute isolated ocular motor nerve palsy is still being debated. We wanted to demonstrate the approach differences between neurologists and ophthalmologists, and examine the role of early neuroimaging in managing acute ocular motor mononeuropathies. Methods: Retrospective chart review. Patients ≥ 50 years with vasculopathic risk factors, presenting with acute isolated third, fourth or sixth cranial nerve palsies. We compared the rate of early neuroimaging referral between neurologists and ophthalmologists at initial presentation, and assessed the proportion of cases in which the final diagnosis has changed after early neuroimaging, in a single medical center. Results: 54 patients were included. After excluding patients with third nerve palsy, the rate of patients referred to early neuroimaging was significantly greater when initially presented to a neurologist compared with an ophthalmologist (29/38 patients were referred to early neuroimaging, of whom twenty by a neurologist and nine by an ophthalmologist, p<0.001). Out of 38 patients presented with fourth or sixth nerve palsies, only 4/38 (10%) were found to have a cause other than presumed microvascular ischemia, and only 2/29 (7%) patients referred to neuroimaging were found to have a causative lesion. Conclusions: The decision to perform early neuroimaging in older patients with acute isolated 4th or 6th nerve palsies and vasculopathic risk factors could be weighed against observation alone. Thorough history taking and prudent physical examination are important for identifying patients with greater risks, therefore needing early neuroimaging.
Abstract: Background: The role of early neuroimaging in older vasculopathic patients presenting with acute isolated ocular motor nerve palsy is still being debated. We wanted to demonstrate the approach differences between neurologists and ophthalmologists, and examine the role of early neuroimaging in managing acute ocular motor mononeuropathies. Methods: R...
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