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Pterygium

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https://www.readbyqxmd.com/read/28634544/efficacy-of-subconjunctival-bevacizumab-injections-before-and-after-surgical-excision-in-preventing-pterygium-recurrence
#1
Raffaele Nuzzi, Federico Tridico
PURPOSE: To evaluate the efficacy of subconjunctival bevacizumab injections, before and after surgical excision with bare sclera technique, in preventing postoperative pterygium recurrence. MATERIAL AND METHODS: 83 eyes of 83 patients affected with primary pterygia underwent surgical excision. 42 eyes received two subconjunctival bevacizumab injections, at the dosage of 2.5 mg/0.1 ml, one week prior surgery and one week after intervention. Recurrence rate was evaluated among the two groups...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28624862/comparison-of-autologous-fibrin-glue-versus-nylon-sutures-for-securing-conjunctival-autografting-in-pterygium-surgery
#2
Daryoush Hamidi Alamdari, Mohamad-Reza Sedaghat, Reza Alizadeh, Siamak Zarei-Ghanavati, Hashem Naseri, Fatemeh Sharifi
PURPOSE: To compare the safety, operating time, postoperative ocular signs, symptoms, overall patient satisfaction, complications rate and recurrence rate of autologous fibrin glue (AFG) and nylon suturing (NS) for attaching conjunctival autografts in pterygium surgery. METHODS: A prospective, randomized, interventional study was performed among 120 patients (120 eyes) with primary pterygium. Superior conjunctival autograft was harvested and transferred on to bare sclera after pterygium excision...
June 17, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28623647/expression-of-mtor-in-primary-pterygium-and-its-correlation-with-%C3%AE-smooth-muscle-actin
#3
Xin-Rong Zhao, Ming-Chang Zhang, Hua-Tao Xie, Nan Ji, Xiao-Qiong Ma
PURPOSE: Mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase that has been shown to affect many cellular functions, such as cell growth, proliferation, and metabolism. However, there has been minimal focus on the expression of mTOR in pterygium. The purpose of this study was to investigate the expression of mTOR and the correlation between the levels of mTOR and α-smooth muscle actin (α-SMA, a marker of transdifferentiation) in pterygium. METHODS: Primary pterygium samples from 28 patients and normal conjunctival samples from 16 patients were surgically removed and analyzed...
June 14, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28622320/a-novel-graft-option-after-pterygium-excision-platelet-rich-fibrin-for-conjunctivoplasty
#4
H B Cakmak, G Dereli Can, M E Can, N Cagil
PurposeTo compare the surgical results, complications, and recurrence rates of primary pterygium excision with conjunctival autografts (CA) vs platelet-rich fibrin (PRF) grafts.Patients and methodsA total of 35 eyes of 35 patients with primary pterygium were included in the study. The patients underwent excision of pterygium followed by closure of the bare sclera by CA (group 1, n=20) vs PRF grafts (group 2, n=15). The PRF was generated from the patients' own whole-blood sample by centrifugation and pressing...
June 16, 2017: Eye
https://www.readbyqxmd.com/read/28614154/regression-of-inflamed-pterygia-by-frequent-high-dose-intralesional-ziv-aflibercept
#5
Ahmad M Mansour
PURPOSE: Intralesional single low-dose vascular endothelial growth factor antagonists have traditionally failed in causing regression of pterygia. The current pilot study investigates the role of high-dose repeated intralesional ziv-aflibercept in causing regression of inflamed or recurring pterygia. METHODS: This prospective study from January 2015 to April 2017 consisted of using high dose of ziv-aflibercept between 0.1 mL (2.5 mg) and 0.3 mL (7.5 mg), depending on the pterygium size and the degree of inflammation...
June 13, 2017: Cornea
https://www.readbyqxmd.com/read/28567165/letter-to-the-editor-corneoscleral-melt-50-years-after-excision-of-pterygium
#6
Aki Kondo, Tatsuya Mimura, Mari Goto, Yuko Kamei, Saito Yusuke, Hiroko Okuma, Masao Matsubara
PURPOSE: To report a case of corneoscleral melt that occurred 50 years after resection of pterygium with postoperative administration of mitomycin C (MMC). RESULTS: A 93-year-old woman developed acute corneal perforation and scleral melt in her left eye at 50 years after pterygium surgery with postoperative topical MMC. She underwent limbal transplantation. The anterior chamber reformed postoperatively and her intraocular pressure was normal. At 12 months after transplantation, best-corrected visual acuity was 20/500 and the graft-host junction was well apposed...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28559202/inhibitory-effects-of-rosmarinic-acid-on-pterygium-epithelial-cells-through-redox-imbalance-and-induction-of-extrinsic-and-intrinsic-apoptosis
#7
Ya-Yu Chen, Chia-Fang Tsai, Ming-Chu Tsai, Yu-Wen Hsu, Fung-Jou Lu
Pterygium is a common tumor-like ocular disease, which may be related to exposure to chronic ultraviolet (UV) radiation. Although the standard treatment for pterygium is surgical intervention, the recurrence rate of pterygium is high when no effective inhibitory drug is used after surgery. Rosmarinic acid (RA) is a polyphenol antioxidant with many biological activities, including anti-UV and anti-tumor properties. This study aimed to examine the inhibitory effects of RA on pterygium epithelial cells (PECs)...
May 27, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28550976/cultivation-and-characterization-of-pterygium-as-an-ex-vivo-study-model-for-disease-and-therapy
#8
Natasha Josifovska, Dóra Júlia Szabó, Richárd Nagymihály, Zoltán Veréb, Andrea Facskó, Ketil Eriksen, Morten C Moe, Goran Petrovski
PURPOSE: Development of ex vivo model to study pathogenesis, inflammation and treatment modalities for pterygium. METHODS: Pterygium obtained from surgery was cultivated (3 months). Gravitational attachment method using viscoelastic facilitated adherence of graft and outgrowing cells. Medium contained serum as the only growth supplement with no use of scaffolds. Surface profiling of the multi-layered cells for hematopoietic- and mesenchymal stem cell markers was performed...
May 24, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28538668/biomechanical-modeling-of-pterygium-radiation-surgery-a-retrospective-case-study
#9
Bojan Pajic, Daniel M Aebersold, Andreas Eggspuehler, Frederik R Theler, Harald P Studer
Pterygium is a vascularized, invasive transformation on the anterior corneal surface that can be treated by Strontium-/Yttrium90 beta irradiation. Finite element modeling was used to analyze the biomechanical effects governing the treatment, and to help understand clinically observed changes in corneal astigmatism. Results suggested that irradiation-induced pulling forces on the anterior corneal surface can cause astigmatism, as well as central corneal flattening. Finite element modeling of corneal biomechanics closely predicted the postoperative corneal surface (astigmatism error -0...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28524142/-effectiveness-of-epithelialization-therapy-after-surgical-treatment-of-pterygiu
#10
A V Petraevskiy, K S Trishkin, I A Gndoyan
Pterygium is widely distributed in regions with hot and dry climate. Frequent relapses of the disease are due to delayed epithelialization of postoperative corneal erosion, associated inflammation and formation of dry areas of the cornea. Effective stimulation of corneal epithelium regeneration in the postoperative period could reduce the frequency of relapses. AIM: to compare the effectiveness, safety and tolerability of different keratoprotectors in patients after surgical treatment of pterygium...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28522251/very-long-term-success-of-pterygium-surgery-with-conjunctival-graft
#11
Ofira Zloto, Nachum Rosen, Ari Leshno, Mordechai Rosner
PURPOSE: To examine to the very long term prognosis (16 years in average) of pterygium surgery with superior or inferior conjunctival graft. METHODS: Clinical data for patients that underwent pterygium surgery with conjunctival graft by two surgeons at the Goldschleger Eye Institute, Sheba Medical Center, Israel, between the years 1997-2001 were retrieved from medical records. For all the included patients, data about their eye examinations was summarized and a questionnaire about their eye history was done...
May 15, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28521845/hiv-infected-individuals-on-long-term-antiretroviral-therapy-are-at-higher-risk-for-ocular-disease
#12
E Schaftenaar, N S Khosa, G S Baarsma, C Meenken, J A McINTYRE, A D M E Osterhaus, G M G M Verjans, R P H Peters
Introduction of antiretroviral therapy (ART) has dramatically reduced the incidence of infectious ocular diseases in human immunodeficiency virus (HIV)-infected individuals. However, the effects of long-term ART and chronic HIV infection on the eye are ill-defined. This study determined the occurrence and severity of ocular diseases among 342 participants in a rural South African setting: HIV-naïve (n = 105), HIV-infected ART-naïve (n = 16), HIV-infected on ART for 36 months (long-term ART; n = 165). More HIV-infected participants presented with an external eye condition, in particular blepharitis, than HIV-naïve individuals (18% vs...
May 19, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28512421/when-an-easy-thing-goes-wrong-foreign-body-induced-granuloma-associated-scleritis-following-pterygium-surgery
#13
Pedro Coelho, Carlos Menezes, Pedro Rodrigues, Rita Gonçalves, Tiago Maio, Jorge Moreira, Paula Tenedório
PURPOSE: To report a case of pterygium surgery with conjunctival autograft followed by focal necrotizing scleritis due to foreign body entrapment in the scleral bed. CASE REPORT/RESULTS: This is a case report of a 76-years-old male patient who underwent nasal pterygium surgery and developed focal necrotizing scleritis secondary to foreign body entrapment under conjunctival autograft. One month following surgery, slit-lamp examination demonstrated a progressive thinning of the surgical area with focal inflammatory signs...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28501948/corneal-tomography-and-biomechanics-in-primary-pterygium
#14
M Vanathi, Sahil Goel, Anita Ganger, Tushar Agarwal, T Dada, Sudarshan Khokhar
PURPOSE: To study the Scheimpflug's imaging and corneal biomechanics in primary pterygium. METHODS: A prospective observational study of 55 patients with unilateral primary nasal pterygium was done. The normal fellow eyes of patients with pterygium were taken as controls. Clinical parameters noted included visual acuity, values of corneal curvature by doing Scheimpflug imaging, wavefront aberrations in terms of higher and lower-order aberrations and corneal hysteresis (CH) as well as corneal resistance factor (CRF) values by using ocular response analyzer...
May 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28489723/femtosecond-laser-assisted-pterygium-surgery
#15
Matthias Fuest, Yu-Chi Liu, Minas T Coroneo, Jodhbir S Mehta
PURPOSE: Pterygium is a prevalent ocular surface disorder. Conjunctival autografting (CAG) after pterygium resection is the gold standard treatment. Thinner CAGs without Tenon tissue provide better results but are technically difficult to achieve. We report on the first femtosecond laser (FSL)-assisted pterygium surgery (FLAPS) in humans. METHODS: In a clinical trial, we treated 6 eyes of 5 patients with FLAPS. After manual removal of the pterygium, CAGs were dissected with the Ziemer Z8 at 60-μm depth and glued into the resection defect...
July 2017: Cornea
https://www.readbyqxmd.com/read/28489720/expression-of-peroxiredoxin-2-and-vascular-endothelial-growth-factor-receptor-2-in-pterygium
#16
Yuchuan Wang, Jinyong Lin, Luxia Chen, Liming Wang, Peng Hao, Ruifang Han, Ming Ying, Xuan Li
PURPOSE: The expression of peroxiredoxin 2 and vascular endothelial growth factor receptor 2 (VEGFR2) was detected in pterygium to investigate whether they are involved in the pathogenesis or recurrence of pterygium and to evaluate the association between peroxiredoxin 2 and VEGFR2 in pterygium. METHODS: Ten normal bulbar conjunctivae, 35 primary pterygia, and 35 recurrent pterygia were obtained. Formalin-fixed, paraffin-wax-embedded tissues were analyzed by immunohistochemistry with peroxiredoxin 2 and VEGFR2 antibodies...
July 2017: Cornea
https://www.readbyqxmd.com/read/28489563/efficacy-of-fibrin-glue-versus-sutures-for-attaching-conjunctival-autografts-in-pterygium-surgery-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis-of-evidence
#17
Aihua Lan, Feifan Xiao, Yun Wang, Zhen Luo, Qixin Cao
Previous meta-analyses have been conducted to compare the efficacy of fibrin glue (FG) versus sutures in pterygium surgery; however, additional clinical trials have since been published. Therefore, we conducted an updated meta-analysis to further explore the association between FG application in pterygium surgery, and the recurrence rate, complication rate, and surgical duration. An electronic literature search for eligible studies published before July 29, 2016 was conducted across multiple databases. Odds ratios (ORs), standardized mean difference (SMD), and 95% confidence intervals (CI) were calculated...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28478469/amniotic-membrane-transplantation-current-indications-in-a-tertiary-eye-hospital-of-eastern-nepal
#18
Diwa Hamal, Sanjay Kumar Singh, Binaya Lamichhane, Archana Sharma, Afaque Anwar, Vijay Mahaseth
INTRODUCTION: Amniotic membrane has unique properties that can be helpful to treat different ocular surface diseases. OBJECTIVES: To report our experience with 100% glycerol preserved amniotic membrane at 4°C and fresh amniotic membrane transplantation (AMT) with and without limbal graft for ocular surface reconstruction. MATERIALS AND METHODS: Retrospective case study of 211 eyes of 211 patients was conducted at Biratnagar Eye Hospital from June 2008 to March 2014...
July 2016: Nepalese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28468208/popliteal-pterygium-syndrome-with-syngnathia
#19
Andrea Sisti, Nicola Freda, Alessandro Giacomina, Gian Luca Gatti
Popliteal pterygium syndrome is a condition characterized by skin webs on the popliteal fossa, which may impair mobility unless surgically repaired. Affected individuals may also have syndactyly on the fingers and/or toes. Most people with this disorder present cleft lip and cleft palate and they can have syngnathia, that is a congenital adhesion between maxilla and mandible by fibrous bands, which affects the opening of the mouth. The case that we report is about a 2-month-old male, who presented skin webs bilaterally on the popliteal fossa, syndactyly between the IV and the V toe of the right foot and between the III and the IV toe of the left foot, and genital malformations...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28465659/comparison-of-fibrin-glue-and-vicryl-sutures-in-conjunctival-autografting-for-pterygium-surgery
#20
Xiu Wang, Yan Zhang, Lei Zhou, Ruihua Wei, Lijie Dong
PURPOSE: To compare clinical parameters and the tear levels of inflammatory cytokines between pterygium surgery using sutures or fibrin glue. METHODS: Fifty-six patients with primary pterygium were divided into the suture group and the glue group, in which the autograft was secured with 10-0 Vicryl sutures and fibrin glue, respectively. A questionnaire, slit-lamp examination, Schirmer test, and visual acuity test were performed in all participants. Real-time quantitative PCR (q-PCR) was used to analyze the expression of genes in pterygium and healthy conjunctival tissues...
2017: Molecular Vision
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