• Pterygia can vary from small, atrophic quiescent lesions to large, aggressive, rapidly growing fibrovascular lesions that can distort the corneal topography, and, in advanced cases, they can obscure the optical center of the cornea. (medscape.com)
  • A pterygium of the eye (plural pterygia or pterygiums, also called surfer's eye) is a pinkish, roughly triangular tissue growth of the conjunctiva onto the cornea of the eye. (wikipedia.org)
  • In advanced cases the pterygium can affect vision as it invades the cornea with the potential of obscuring the optical center of the cornea and inducing astigmatism and corneal scarring. (wikipedia.org)
  • The predominance of pterygia on the nasal side is possibly a result of peripheral light focusing, where the sun's rays passing laterally through the cornea, where they undergo refraction and become focused on the limbic area. (wikipedia.org)
  • Another condition which is similar to pterygium is inflammatory adhesion of conjunctiva to cornea known as pseudopterygium. (wikipedia.org)
  • Unlike pterygium, it may occur anywhere around cornea and the adhesion is usually limited to its apex. (wikipedia.org)
  • Pterygium extends to cover the cornea, which can cause significant irregular corneal astigmatism, pupil occlusion and affect visual acuity. (researchsquare.com)
  • Pterygium is a common ocular surface lesion that begins in the limbal conjunctiva within the palpebral fissure and progresses to the cornea. (databridgemarketresearch.com)
  • Pterygium is diagnosed using a microscope to examine the front components of the eye during a full eye examination and based on the appearance of tissue growth on the cornea from the white area of the eye. (databridgemarketresearch.com)
  • At advanced stages, pterygia can spread to the cornea and affect vision, requiring surgical removal (Torres-Gimeno 2012). (ewg.org)
  • Sometimes, a pterygium can grow onto the cornea. (eyeinstitute.co.nz)
  • Aims To determine prevalence of pterygium, its role as main cause of unilateral and bilateral visual impairment and blindness and its impact on refractive errors from adults living in a high ultraviolet exposure area in the Brazilian Amazon Region. (bmj.com)
  • Prevalence of pterygium as cause of visual impairment and blindness was 14.3% and 3.9%, respectively. (bmj.com)
  • Conclusions Pterygium was highly prevalent and the second cause of visual impairment and blindness after provision of refractive correction. (bmj.com)
  • The prevalence of visual impairment and blindness in our communities will deteriorate as a result of the anticipated rise in eye diseases and the disruptions in eye care services, with vulnerable populations being disproportionately impacted. (iapb.org)
  • Material y métodos: Se realizó una búsqueda de la literatura de "Rapid Assessments of Avoidable Blindness (Encuestas Rápida de Ceguera Evitable)" publicados en Latinoamérica desde el 2011. (scielo.org)
  • The visual and cosmetic prognosis following pterygium excision is good. (medscape.com)
  • Those patients who develop recurrent pterygia can be retreated with repeat surgical excision and grafting, with conjunctival/limbal autografts or amniotic membrane transplants in selected patients. (medscape.com)
  • Surgical excision is the main treatment of pterygium, but the postoperative recurrence rate is high, the appearance of the eye is not ideal, postoperative foreign body feeling has been a difficult problem of clinical treatment. (researchsquare.com)
  • At present, there are many surgical methods for pterygium, including simple pterygium excision. (researchsquare.com)
  • Pterygium excision combined with autologous conjunctival flap transposition, pterygium excision combined with amniotic membrane transplantation, pterygium excision combined with autologous limbal stem cell transplantation and so on [12] . (researchsquare.com)
  • Uy HS, Reyes JM, Flores JD, Lim-Bon-Siong R. Comparison of fibrin glue and sutures for attaching conjunctival autografts after pterygium excision. (medscape.com)
  • The standard treatment for pterygium is surgical excision, but the recurrence rate after surgery can be as high as 24%-89%, which compromises outcomes [ 4 ]. (oncotarget.com)
  • Effect of pterygium excision on mean corneal curvature. (theprofesional.com)
  • The incidence of pterygium within the United States varies with geographical location. (medscape.com)
  • Patients older than 40 years have the highest prevalence of pterygia, while patients aged 20-40 years are reported to have the highest incidence of pterygium. (medscape.com)
  • McCartan and Healy [ 17 ] identified forty-five studies that calculated the prevalence or incidence of LP. They concluded an overall age-adjusted prevalence of 1.27% (0.96% in men and 1.57% in women) in Sweden [ 14 , 18 ]. (hindawi.com)
  • Indeed, it is estimated that approximately 20% of cataract cases are the direct result of ultraviolet (UV) radiation overexposure amongst a significant rise in the incidence of some other ocular disease such as pterygium and ocular allergies. (iapb.org)
  • The postoperative follow-up period (6 months), the recurrence rate of pterygium was 0.21%.Patients have higher satisfaction with appearance, and have no obvious foreign body sensation, photophobia, tearing and other subjective symptoms. (researchsquare.com)
  • Although there was no difference in complication rate between FG and sutures, the apparent advantages of FG over sutures are shorter surgical duration and greater reduction in the recurrence rate of pterygium. (oncotarget.com)
  • A pterygium is an elevated, superficial, external ocular mass that usually forms over the perilimbal conjunctiva and extends onto the corneal surface. (medscape.com)
  • Patients who are at high risk of the development of pterygium because of a positive family history of pterygia or because of extended exposure to ultraviolet irradiation need to be educated in the use of ultraviolet-blocking glasses and other means of reducing ocular exposure to ultraviolet light. (medscape.com)
  • Prevalence of ocular manifestations and visual outcomes in patients with herpes zoster ophthalmicus. (eyehealth.com.hk)
  • Utilizando el compendio de datos de los estudios originales de la cobertura de cirugía de catarata (Cataract Surgery Coverage, CSC por sus siglas en inglés) en base individual, se realizó un modelo de efectos aleatorios de metaanálisis para evaluar las diferencias en la CSC entre hombres y mujeres. (scielo.org)
  • Starck T, Kenyon KR, Serrano F. Conjunctival autograft for primary and recurrent pterygia: surgical technique and problem management. (medscape.com)
  • Eye rubbing causing conjunctival graft dehiscence following pterygium surgery with fibrin glue. (medscape.com)
  • Pterygium is a non-malignant, slow-growing conjunctival fibrous vascular tissue of the conjunctiva. (researchsquare.com)
  • Bahar I, Weinberger D, Gaton DD, Avisar R. Fibrin glue versus vicryl sutures for primary conjunctival closure in pterygium surgery: long-term results. (medscape.com)
  • Role of conjunctival inflammation in surgical outcome after amniotic membrane transplantation with or without fibrin glue for pterygium. (medscape.com)
  • Oguz H. Amniotic membrane grafting versus conjunctival autografting in pterygium surgery. (medscape.com)
  • Postoperative conjunctival inflammation after pterygium surgery with amniotic membrane transplantation versus conjunctival autograft. (medscape.com)
  • 1. Katircioglu YA, Altiparmak U, Engur Goktas S, Cakir B, Singar E, Ornek F. Comparison of Two Techniques for the Treatment of Recurrent Pterygium: Amniotic Membrane vs Conjunctival Autograft Combined with Mitomycin C. (draltiparmak.com)
  • Efficacy of fibrin glue versus sutures for attaching conjunctival autografts in pterygium surgery: a systematic review with meta-analysis and trial. (oncotarget.com)
  • Coroneo MT, Di Girolamo N, Wakefield D. The pathogenesis of pterygia. (medscape.com)
  • In this study, we further speculate that p53 inactivation may be linked with HPV infection in pterygium pathogenesis. (molvis.org)
  • HPV 16/18 E6 contributes to HPV-mediated pterygium pathogenesis as it is partly involved in p53 inactivation and is expressed in HPV DNA-positive pterygium. (molvis.org)
  • Therefore, we hypothesize that high-risk HPV 16/18 infection may be involved in pterygium pathogenesis in Taiwan. (molvis.org)
  • In this report, we analyzed p53 protein expression and gene mutation in pterygium in comparison with HPV 16/18 infection and E6 oncoprotein expression in pterygium tissues to understand whether the HPV infection was involved in pterygium pathogenesis. (molvis.org)
  • This is also sometimes known as "surfer's eye" or "farmers eye" because being exposed to harmful UV rays for long hours can increase your risk of getting a pterygium. (healthline.com)
  • Pterygia can develop on the nasal and/or temporal limbus and can affect either or both eyes. (medscape.com)
  • Pterygium is a triangular fold of bulbar conjunctiva usually found in the nasal side of the interpalpebral fissure. (bijojournal.org)
  • Jain AK, Bansal R, Sukhija J. Human amniotic membrane transplantation with fibrin glue in management of primary pterygia: a new tuck-in technique. (medscape.com)
  • The aim of this study is to reveal the effect of pterygium on corneal thickness, corneal curvature, tear volume, and intraocular pressure (IOP). (bijojournal.org)
  • After surgical treatment of pterygium, there will still be a small number of mutant epithelial stem cells remaining. (researchsquare.com)
  • 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. (oncotarget.com)
  • It is uncommon for patients to present with pterygium prior to age 20 years. (medscape.com)
  • Patients with pterygium should reduce exposure to ultraviolet light whenever possible. (medscape.com)
  • Pterygial samples were harvested from 129 patients who were undergoing pterygium surgery and submitted a written informed consent approved by the Institutional Review Board. (molvis.org)
  • A total of 100 patients have primary pterygium in one eye (unilateral) compared to their healthy (control) eye. (bijojournal.org)
  • Dès le début de la pandémie, l'établissement hospitalier et universitaire d'Oran (EHUO), centre de soins de première ligne, d'une capacité 780 lits desservant environ 2 millions d'habitants s'est complètement réorganisé, en aménageant principalement des circuits pour le tri des patients « suspects Covid 19 ¼. (bvsalud.org)
  • Epidemiology The prevalence is not known but approximately 1000 patients have been registered to date worldwide. (findzebra.com)
  • Pterygium in the conjunctiva is characterized by elastotic degeneration of collagen (actinic elastosis) and fibrovascular proliferation. (wikipedia.org)
  • Discussion and conclusion Extensive fascial resection combined with autologous limbal stem cell sharing transplantation for the treatment of pterygium, the patient's appearance satisfaction is higher, and the recurrence probability is lower than the average recurrence rate of limbal stem cell transplantation. (researchsquare.com)
  • Introduction To observe the short-term and long-term effects of extensive fascial resection combined with autologous limbal stem cell sharing transplantation for pterygium. (researchsquare.com)
  • People exposed to too much sun and wind sometimes develop benign growths called pterygia over the white of the eye. (ewg.org)
  • A pterygium is a benign growth that occurs on the surface of the eye. (eyeinstitute.co.nz)
  • Prevalence varies in different studies between about 1/3,000 to 1/12,000 live births. (msdmanuals.com)
  • Significantly higher hyperopic refractive errors were found in eyes with pterygium ≥3 mm reaching or not pupillary margin. (bmj.com)
  • Objective: The objective of this study was to determine the prevalence of uncorrected refractive error among students in three selected secondary schools in Birnin Kebbi metropolis as many children with poor vision due to refractive error remain undiagnosed and perform poorly in schools. (bvsalud.org)
  • A relationship is thought to exist between increased prevalence and elevated levels of ultraviolet light exposure in the lower latitudes. (medscape.com)
  • Threlfall TJ, English DR. Sun exposure and pterygium of the eye: a dose-response curve. (medscape.com)
  • UV exposure is strongly linked to the occurrence of pterygia. (databridgemarketresearch.com)
  • The exact cause of pterygium is not well understood, but long-term exposure to sunlight, especially ultraviolet rays, wind, and chronic eye irritation from dry and dusty conditions seems to play an important causal role. (bijojournal.org)
  • Pterygium is reported to occur in males twice as frequently as in females. (medscape.com)
  • In addition, pterygia are twice as likely to occur in men than women. (wikipedia.org)
  • The birth prevalence of Noonan syndrome (NS) is estimated between 1:1000 to 1:2500. (orpha.net)
  • Prevalence of Oral Mucosal Lesions and Oral Health Related Quality of Life among Adolescents in a Rural Nigerian Population. (who.int)
  • and prevalence ranging from 4.9% - 64.7% few broad population-based epidemiological studies has been reported worldwide.2 These lesions may be of OMLs available in Nigeria in 1984. (who.int)
  • They affect al age groups to varying degrees and METHODOLOGY sociodemographic factors are wel known to STUDY DESIGN AND LOCATION contribute to the prevalence of diseases. (who.int)
  • To investigate the involvement of HPV 16/18 E6 in p53 inactivation in pterygium, the association between HPV 16 or HPV 18 infection, the HPV E6 oncoprotein, and p53 protein expression was analyzed in this study. (molvis.org)
  • This study describes the prevalence, associated malformations, and maternal characteristics among cases with sirenomelia. (cdc.gov)
  • Prevalence of psychosocial problems in children with and without epilepsy: A comparative cross-section study. (theprofesional.com)
  • WHO) has expressed its commitment The study population was Omani (based on recognizing single optotype to the elimination of blinding trachoma people aged 40+ years in these en- `E' at 3 m distance) using a pinhole was by the year 2020 [1]. (who.int)
  • The association between HPV infection and pterygium was then reasonably suggested to be geography- and race-dependent. (molvis.org)
  • Strategies to provide pterygium early detection and proper management should be considered by healthcare authorities in this population. (bmj.com)
  • PURPOSE: We determined whether elevated serum alkaline phosphatase (ALP) was related to prevalence, location, type, length, and recurrence of pterygium in a population from the Republic of Korea. (koreamed.org)
  • En décembre 2019, la population de Wuhan, une grande ville chinoise de 11 millions d'habitants, est atteinte par une pneumonie virale extrêmement contagieuse due au coronavirus SARSCoV-2. (bvsalud.org)
  • It has an advancing portion called the head of the pterygium, which is connected to the main body of the pterygium by the neck. (wikipedia.org)
  • Characteristic facial features are often more obvious in infancy : high broad forehead, hypertelorism, palpebral ptosis and downward slanting palpebral fissures, low-set, thick, posteriorly rotated ears, deep philtrum, micrognathia, curly hair and a short neck with sometimes a pterygium colli. (orpha.net)
  • Older age and rural residence were associated with pterygium ≥3 mm reaching or not pupillary margin, while higher education was a protective factor for pterygium ≥3 mm reaching pupillary margin. (bmj.com)
  • Pterygium (conjunctiva) can be diagnosed without need for a specific exam, however corneal topography is a practical test (technique) as the condition worsens. (wikipedia.org)