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Pathological myopia

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https://www.readbyqxmd.com/read/29288031/prevalence-and-characteristics-of-myopic-degeneration-in-an-adult-chinese-american-population-the-chinese-american-eye-study
#1
Farzana Choudhury, Stacy M Meuer, Ronald Klein, Dandan Wang, Mina Torres, Xuejuan Jiang, Roberta McKean-Cowdin, Rohit Varma
PURPOSE: To characterize and provide population-based prevalence estimates of myopic degeneration (MD) among Chinese Americans, the fastest growing minority population in the United States in the last decade. DESIGN: Population-based, cross-sectional study. METHODS: 1523 Chinese American adults with myopia, aged 50 years and older, residing in the City of Monterey Park, California, underwent an interview and comprehensive eye exam, including subjective and objective refraction, and stereoscopic fundus photography...
December 26, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29260192/patchy-chorioretinal-atrophy-changes-at-the-posterior-pole-after-ranibizumab-for-myopic-choroidal-neovascularization
#2
Mariacristina Parravano, Fabio Scarinci, Marta Gilardi, Lea Querques, Monica Varano, Francesco Oddone, Francesco Bandello, Giuseppe Querques
Purpose: To investigate the potential role of ranibizumab treatment on the development or enlargement of chorioretinal atrophy (CRA) at the posterior pole in eyes with myopic choroidal neovascularization (mCNV). Methods: This observational case series included patients having high myopia spherical equivalent refractive error ≥ -6.00 diopters, axial length (AxL) ≥ 26.0 mm in both eyes, and mCNV treated with ranibizumab 0.5 mg in one eye, who were retrospectively enrolled...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29259393/the-retina-rpe-proteome-in-chick-myopia-and-hyperopia-models-commonalities-with-inherited-and-age-related-ocular-pathologies
#3
Nina Riddell, Pierre Faou, Melanie Murphy, Loretta Giummarra, Rachael A Downs, Harinda Rajapaksha, Sheila G Crewther
Purpose: Microarray and RNA sequencing studies in the chick model of early optically induced refractive error have implicated thousands of genes, many of which have also been linked to ocular pathologies in humans, including age-related macular degeneration (AMD), choroidal neovascularization, glaucoma, and cataract. These findings highlight the potential relevance of the chick model to understanding both refractive error development and the progression to secondary pathological complications...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29232337/retinal-telangiectasia-in-patients-with-pathologic-myopia-a-case-series
#4
Boya Lei, Ruiping Gu, Chen Jiang, Gezhi Xu
PURPOSE: To describe the characteristics of retinal telangiectasia in eyes with pathologic myopia. METHODS: The study included 10 patients (18 eyes) who were diagnosed with pathologic myopia combined with retinal telangiectasia. The patients visited our retinal clinic every 3 months. Nine eyes underwent vitrectomy for vision-threatening complications after diagnosis. All eyes underwent comprehensive ophthalmologic examinations including multimodal retinal imaging at presentation and at each follow-up...
December 8, 2017: Retina
https://www.readbyqxmd.com/read/29190623/axial-length-corneal-radius-of-curvature-ratio-assessment-of-posterior-sclera-reinforcement-for-pathologic-myopia
#5
Huiling Hu, Guangyu Zhao, Ruifeng Wu, Huahong Zhong, Min Fang, Hongwei Deng
PURPOSE: The aim of this study was to assess the axial length/corneal radius of curvature ratio changes after posterior scleral reinforcement (PSR) for pathologic myopia. PROCEDURES: This study enrolled 32 pathologically myopic eyes treated with PSR and 35 untreated pathologically myopic eyes. Axial length, refractive error, best corrected visual acuity, corneal radius of curvature, and the axial length/corneal radius of curvature ratio were evaluated during the 1-year follow-up...
November 30, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/29183904/inverse-hypopyon-hyperoleon-at-the-posterior-segment-in-pathological-myopia
#6
Koushik Tripathy, Rohan Chawla
No abstract text is available yet for this article.
November 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29111299/diagnosis-and-treatment-guideline-for-myopic-choroidal-neovascularization-due-to-pathologic-myopia
#7
REVIEW
Kyoko Ohno-Matsui, Yasushi Ikuno, Timothy Y Y Lai, Chui Ming Gemmy Cheung
Pathologic myopia is a leading cause of visual impairment. Development of myopic choroidal neovascularization (CNV) is one of the most common complications that leads to central vision loss in patients with pathologic myopia. If left untreated, it can cause scarring with expanding macular atrophy leading to irreversible visual loss in a period as short as 5 years. Advancements in multimodal imaging technology have furthered our understanding of the condition; however, further studies are necessary to extend its utility in the diagnosis of myopic CNV...
October 27, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/29096121/the-elastic-modulus-and-collagen-of-sclera-increase-during-the-early-growth-process
#8
Congcong Wang, Yongfang Xie, Guohui Wang
The aim of this study was to investigate the changes in the elastic modulus and collagen in scleral tissues of different ages. The eyeballs of 1-, 2- and 3-month-old New Zealand white rabbits were obtained to assess three regions of the sclera-anterior, equatorial and posterior. The three regions of the scleral tissues were then separately divided into four groups. The first group was made into scleral strips for elastic modulus measurement using an Instron 5544. The second group was HE stained for observation of the scleral structures...
October 18, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29057641/anti-vascular-endothelial-growth-factor-therapy-for-myopic-choroidal-neovascularization
#9
Danny S C Ng, Timothy Y Y Lai, Chui Ming Gemmy Cheung, Kyoko Ohno-Matsui
Myopic choroidal neovascularization (CNV) is one of the most vision-impairing complications in patients with pathologic myopia. It is also one of the most frequently encountered non‒age-related macular degeneration causes of CNV and affects young patients in the working age group. Fluorescein angiography (FA) and spectral domain optical coherence tomography (OCT) are generally indicated to confirm the diagnosis of active myopic CNV before initiation of treatment. Without treatment, natural history studies have shown that the vision outcome can be very poor...
October 20, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/29054766/rethinking-genotype-phenotype-correlations-in-papillorenal-syndrome-a-case-report-on-an-unusual-congenital-camptodactyly-and-skeletal-deformity-with-a-heterogeneous-pax2-mutation-of-hexanucleotide-duplication
#10
Jiewei Liu, Ping Wang, Juan Huang, Zihua Yu
Papillorenal syndrome (PRS), an autosomal dominant inherited condition, is clinically featured by renal hypoplasia and optic nerve dysplasia. Based on current knowledge of genotype-phenotype correlations in PRS, mutations in the Paired box 2 (PAX2) gene have been recognized as a critical pathogenesis of typical renal and optic disease manifestations. However, little information is currently available on the skeletal abnormalities of PRS and the potential contribution of PAX2 mutations. Here, we present a case of a 10-year-old female PRS patient with the typical features of chronic renal failure and severe myopia, but was unexpectedly discovered camptodactyly of her left middle finger which affects the proximal interphalangeal joint...
October 17, 2017: Gene
https://www.readbyqxmd.com/read/29026284/anti-vascular-endothelial-growth-factor-therapy-for-the-treatment-of-myopic-choroidal-neovascularization
#11
REVIEW
Colin S Tan, SriniVas R Sadda
Myopic choroidal neovascularization (CNV) is a sight-threatening condition which occurs in eyes with myopia, particularly in those with pathologic myopia. It is the most common cause of CNV among patients younger than 50 years. Hemorrhage and exudation from the CNV lesion may eventually result in scarring or chorioretinal atrophy. While myopic CNV was previously treated with focal laser photocoagulation or photodynamic therapy (PDT), the current treatment of choice is anti-vascular endothelial growth factor (VEGF) agents...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29021916/vitrectomy-in-high-myopia-a-narrative-review
#12
REVIEW
Michele Coppola, Alessandro Rabiolo, Maria Vittoria Cicinelli, Giuseppe Querques, Francesco Bandello
Pathologic myopia is associated with degenerative changes of the globe, especially at the posterior pole. Eyes affected by pathologic myopia have higher odds to undergo posterior segment surgery and, in those eyes, vitreoretinal surgery is challenging. Many practical tips and tricks can make the surgical procedures simpler, significantly preventing sight-threatening intra- and post-operative complications. Moreover, novel surgical techniques and technological advancements (i.e. ad-hoc instrumentation, minimally invasive vitreoretinal surgery, filters, dye staining, intraoperative optical coherence tomography and 3-dimensional surgery) may play role in highly myopic eyes...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28951126/the-epidemics-of-myopia-aetiology-and-prevention
#13
REVIEW
Ian G Morgan, Amanda N French, Regan S Ashby, Xinxing Guo, Xiaohu Ding, Mingguang He, Kathryn A Rose
There is an epidemic of myopia in East and Southeast Asia, with the prevalence of myopia in young adults around 80-90%, and an accompanying high prevalence of high myopia in young adults (10-20%). This may foreshadow an increase in low vision and blindness due to pathological myopia. These two epidemics are linked, since the increasingly early onset of myopia, combined with high progression rates, naturally generates an epidemic of high myopia, with high prevalences of "acquired" high myopia appearing around the age of 11-13...
September 23, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28912514/retinal-changes-following-rapid-ascent-to-a-high-altitude-environment
#14
X Tian, B Zhang, Y Jia, C Wang, Q Li
PurposeTo determine what impact rapid ascension to a high-altitude environment has on the retina with the aim of preventing and treating high-altitude oculopathy.Patients and methodsParticipants in the study were members of the Chinese military assigned to the high-altitude environment of the Tibetan plateau. Ninety-one participants were enrolled in the study. Optical coherence tomography was used to measure the thickness of retina-related indicators. Measurements were taken before and after exposure to the high-altitude environment and upon return to the baseline altitude...
September 15, 2017: Eye
https://www.readbyqxmd.com/read/28891727/methodology-of-the-zoc-bhvi-high-myopia-cohort-study-the-onset-and-progression-of-myopic-pathologies-and-associated-risk-factors-in-highly-myopic-chinese
#15
Yanxian Chen, Ou Xiao, Xinxing Guo, Decai Wang, Padmaja Sankaridurg, Ian Morgan, Mingguang He
PURPOSE: The increasing prevalence of high myopia and its associated pathologies has raised challenges to ophthalmic services. This project aims to explore the onset and progression of myopic pathologies in highly myopic eyes through a prospective research cohort established in South China. METHODS: Patients with high myopia (sphere ≤ -6.00 D) visiting the optometric clinic of Zhongshan Ophthalmic Center (ZOC) were invited to participate in the baseline examinations and follow-up visit over a 10-year period...
September 11, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28882754/mini-review-far-peripheral-vision
#16
Michael J Simpson
The region of far peripheral vision, beyond 60 degrees of visual angle, is important to the evaluation of peripheral dark shadows (negative dysphotopsia) seen by some intraocular lens (IOL) patients. Theoretical calculations show that the limited diameter of an IOL affects ray paths at large angles, leading to a dimming of the main image for small pupils, and to peripheral illumination by light bypassing the IOL for larger pupils. These effects are rarely bothersome, and cataract surgery is highly successful, but there is a need to improve the characterization of far peripheral vision, for both pseudophakic and phakic eyes...
September 9, 2017: Vision Research
https://www.readbyqxmd.com/read/28862734/utility-of-bruch-membrane-opening-based-optic-nerve-head-parameters-in-myopic-subjects
#17
Marina Sastre-Ibañez, Jose M Martinez-de-la-Casa, Gema Rebolleda, Pilar Cifuentes-Canorea, Maria Nieves-Moreno, Laura Morales-Fernandez, Federico Saenz-Frances, Julian Garcia-Feijoo
PURPOSE: To evaluate whether the new rim analysis software with spectral-domain optical coherence tomography (SD-OCT) shows advantages over the retinal nerve fiber layer (RNFL) thickness in patients with moderate myopia. METHODS: In this prospective cross-sectional study, we studied 65 healthy subjects, 37 with spherical refractive errors in the range of -3 to -6 D (moderate, G1) and 28 with less than -3 D (low/non-myopic, G0). All patients were examined with Heidelberg Spectralis SD-OCT, including Glaucoma Premium Module Edition (GPME) software...
August 11, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28837730/a-novel-potentially-causative-variant-of-ndufaf7-revealed-by-mutation-screening-in-a-chinese-family-with-pathologic-myopia
#18
Baojiang Wang, Yongli Liu, Shiguo Chen, Yunmiao Wu, Sheng Lin, Yongheng Duan, Kaifeng Zheng, Linghua Zhang, Xueying Gu, Wenxu Hong, Hao Shao, Xuchun Zeng, Bi Sun, Shan Duan
Purpose: Pathologic myopia described as myopia accompanied by severe deformation of the eye besides excessive elongation of eye, is usually a genetic heterogeneous disorder characterized by extreme, familial, early-onset vision loss. However, the exact pathogenesis of pathologic myopia remains unclear. In this study, we screened a Han Chinese family with pathologic myopia to identify the causative mutation and explore the possible pathogenic mechanism based on evaluation of the biological functions of the mutation...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28781889/evaluation-of-macular-and-peripapillary-vessel-flow-density-in-eyes-with-no-known-pathology-using-optical-coherence-tomography-angiography
#19
Muhammad Hassan, Mohammad Ali Sadiq, Muhammad Sohail Halim, Rubbia Afridi, Mohamed K Soliman, Salman Sarwar, Aniruddha Agarwal, Diana V Do, Quan Dong Nguyen, Yasir Jamal Sepah
PURPOSE: To assess normal vessel flow density (VFD) in macular and peripapillary regions of eyes with no known ocular pathology using optical coherence tomography angiography (OCTA). METHODS: AngioVue (Optovue, Fremont, CA, USA) was used to capture OCTA images. A 3 × 3 mm grid and a 4.5 × 4.5 mm grid was used to scan parafoveal and peripapillary regions, respectively. ReVue software was utilized to measure VFD in five sectors within the inner two circles of ETDRS grid in macular region and correlated to retinal thickness of same sectors...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28738419/posterior-staphylomas-in-pathologic-myopia-imaged-by-widefield-optical-coherence-tomography
#20
Kosei Shinohara, Noriaki Shimada, Muka Moriyama, Takeshi Yoshida, Jost B Jonas, Nagahisa Yoshimura, Kyoko Ohno-Matsui
Purpose: To examine posterior staphylomas by widefield optical coherence tomography (WF-OCT) and three-dimensional magnetic resonance imaging (3D-MRI). Methods: Highly myopic patients (myopic refractive error >8.0 diopters or axial length >26.5 mm) who had previously undergone orbital 3D-MRI were examined by WF-OCT. Results: The study included 100 eyes of 57 patients with a mean age of 67.9 ± 10.7 years (range, 44-85 years) and mean axial length of 30...
July 1, 2017: Investigative Ophthalmology & Visual Science
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