Degenerative myopia retina7/31/2023 The study adhered to the guidelines of the Declaration of Helsinki. Ethical approval was obtained from the Institutional Review Board and written informed consent was obtained from all participants. This study is a cross-sectional study of a clinical population attending the Cairo University Hospital general ophthalmology clinic of our department in the period from September 2015 to November 2015. In this study, we sought to determine the prevalence of Pathological Myopia in patients attending our University Hospital Ophthalmology clinic. In 2015, Massoud and Nassr showed it to be present in 10.8% of university students. This indicates an increasingly higher prevalence of pathological myopia among Egyptians over time. In 1960, Fuchs mentioned that the prevalence of pathological myopia in Egypt was 0.2%, while Gawdat, in 1976, showed that it is 7.4%. In Egypt, many patients are found to have high myopia. In the USA, it is the seventh leading cause of blindness, while according to a recent study from Japan, pathological myopia was the third leading cause of bilateral vision loss and the leading cause of monocular blindness in that population In Canada it is estimated that 9% of blindness was due to pathological myopia, while in the Beijing Eye Study, it was the most frequent cause of low vision and blindness in subjects 40 to 49 years old. In fact, pathological myopia is now one of the leading causes of legal blindness in many developed countries. Second, people with high myopia are at greater risk of potentially blinding myopic complications. It is estimated that 153 million people over 5 years of age globally have visual impairment due to uncorrected myopia and other refractive errors. In a study of 5060 students in a Chinese university, 95.5% were found to be myopic (Spherical equivalent (SphEq) 60 years was 50.2%, 50.1% and 26.5% respectively, while the prevalence for severe myopia (SphEq 60 years was 7.4%, 7.8% and 3.1% respectively. In these countries, 80-90% of children finishing high school are now myopic, with 10-20% being highly myopic. First, in developed countries in East and Southeast Asia, as Singapore, China and Taiwan, the prevalence of myopia has rapidly increased in the last 50-60 years. It has emerged as a major health concern for several reasons. Yet, there has not been a standard definition for pathological myopia to date. Other studies have defined pathological myopia as myopia more than or equal to -6D or an axial length of more than 25.5 mm. In 1970, Duke Elder defined pathological myopia as myopia associated with degeneration of the sclera, choroid, and retinal pigment epithelium, with visual function compromise, while in 1988 Tokoro defined it by excessive and progressive elongation of the axial length. Pathological myopia, high myopia and degenerative myopia are various terms used to describe this condition. Pathological myopia is a major growing health problem worldwide that is particularly prevalent in Asian and Middle Eastern countries. Pathological myopia, axial length, prevalence, refractive error, Egypt Introduction Keywords: Pathological Myopia, axial length, prevalence, refractive error, Egypt Key words A large community-based study in Egypt is required to determine the prevalence in the general population. Their axial lengths ranged from 25.50 mm to 36.00 mm (mean 28.65 ± 2.34 mm).Ĭonclusion: This study suggests a high prevalence of Pathological Myopia in Egypt compared to studies from other countries. The refractive error of pathologically myopic eyes ranged from -3.00D to -26.00D (mean -12.11 ± 5.05D) calculated as the SphEq of their refraction. Of these patients, 19 (22.6%) had unilateral Pathological-Myopia, while 65 (77.4%) had bilateral Pathological-Myopia. The number of patients with at least one pathologically myopic eye was 84 patients (12.6% of examined patients). One hundred and forty eyes (10.9%) were found to have Pathological-Myopia. Results: A total of 1289 eyes of 668 consecutive patients were examined. The prevalence of Pathological Myopia in this sample of eyes was then determined, where Pathological-Myopia was defined as refraction more than or equal to -6D spherical equivalent (SphEq) or an axial length more than or equal to 25.5 mm. vitreous hemorrhage) underwent either A scan or B scan ultrasonography to determine their axial length. Eyes were subjected to non-cycloplegic refraction using an autorefractometer. Patients had full ophthalmological examination. Methods: This is a cross sectional study to determine the prevalence of Pathological Myopia at the ophthalmology clinic of our University Hospital. Purpose: To determine the prevalence of Pathological Myopia at the general ophthalmology clinic of our University Hospital over a period of 3 months.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |