| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.59 MB | Adobe PDF |
Authors
Abstract(s)
A margem do disco ótico clinicamente visível é um dos principais marcos anatómicos a
observar quando se faz uma avaliação da cabeça do nervo ótico.
Estudos recentes mostram que a margem do disco ótico clinicamente visível em
fundoscopias depende da conjugação de três estruturas anatómicas, nomeadamente a
abertura de membrana de Bruch, o tecido de bordo de Elschnig e a esclera anterior.
A conjugação destas três estruturas anatómicas resulta em três configurações
anatómicas específicas, caracterizadas pela obliquidade do tecido de bordo. As três
configurações anatómicas são a oblíqua interna, oblíqua externa e não-oblíqua.
Ao longo da margem do disco ótico pode encontrar-se mais do que uma configuração
anatómica, sendo que essa configuração pode modificar-se ao longo da vida humana.
Sabe-se, também, que em certas condições patológicas, como o glaucoma ou miopia
patológica, as configurações anatómicas observadas nestes sujeitos diferem bastante
das observadas em sujeitos normais.
Se estas alterações da configuração anatómica puderem ser detetadas de forma
prematura poderá significar uma melhor deteção destas patologias.
Na literatura não existem estudos sobre a configuração anatómica em sujeitos jovens
saudáveis.
Desta forma, neste trabalho avaliou-se quais as configurações anatómicas mais comuns
numa população jovem saudável. Em particular, foram também avaliadas as diferenças
entre sexo e ametropias pequenas.
The clinically visible optic disc’s margin is one of the main anatomic landmarks to be observed when assessing the optic nerve head. Recent studies show that the clinically visible optic disc’s margin in fundoscopy depends on the combination of three anatomic structures, that are the Bruch’s membrane opening, the border tissue of Elschnig and the anterior sclera. The combination of these three anatomic structures results in three specific anatomic configurations, which are characterized by the obliquity of the border tissue. The three anatomical configurations are the internal oblique, external oblique and non-oblique. Along the optic disc’s margin, more than on anatomical configuration can be found, and this configuration can change throughout human life. It is also known that in certain pathologic conditions, such as glaucoma or pathologic myopia, the anatomical configurations observed in these subjects differ greatly from those observed in normal subjects. If these changes in the anatomic configuration can be detected prematurely, it may mean a better detection of these pathologies. There are no studies in the literature on anatomic configuration in healthy young subjects. Thus, in this work, it was evaluated which anatomic configuration are most common in a healthy young population. In particular, the diferences between sex and small ametropias were also evaluated.
The clinically visible optic disc’s margin is one of the main anatomic landmarks to be observed when assessing the optic nerve head. Recent studies show that the clinically visible optic disc’s margin in fundoscopy depends on the combination of three anatomic structures, that are the Bruch’s membrane opening, the border tissue of Elschnig and the anterior sclera. The combination of these three anatomic structures results in three specific anatomic configurations, which are characterized by the obliquity of the border tissue. The three anatomical configurations are the internal oblique, external oblique and non-oblique. Along the optic disc’s margin, more than on anatomical configuration can be found, and this configuration can change throughout human life. It is also known that in certain pathologic conditions, such as glaucoma or pathologic myopia, the anatomical configurations observed in these subjects differ greatly from those observed in normal subjects. If these changes in the anatomic configuration can be detected prematurely, it may mean a better detection of these pathologies. There are no studies in the literature on anatomic configuration in healthy young subjects. Thus, in this work, it was evaluated which anatomic configuration are most common in a healthy young population. In particular, the diferences between sex and small ametropias were also evaluated.
Description
Keywords
Glaucoma Margem do Disco Ótico Obliquidade Onh Tecido de Bordo Tecido de Bordo de Elschnig