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Eye Anatomy - Science topic

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Publications related to Eye Anatomy (32)
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Article
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Introducción: entre las asignaturas de mayor reto en los programas de Medicina se encuentra Anatomía Humana. Los estudiantes muestran dificultad en la comprensión, reconocimiento, entendimiento tridimensional y relación de las estructuras anatómicas; así pues, una excelente ayuda pedagógica es la práctica de disección. Objetivo: el objetivo de este...
Article
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This review highlights the application of lipid nanoparticles (Solid Lipid Nanoparticles, Nanostructured Lipid Carriers, or Lipid Drug Conjugates) as effective drug carriers for pathologies affecting the posterior ocular segment. Eye anatomy and the most relevant diseases affecting the posterior segment will be summarized. Moreover, preparation met...
Article
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Introducción. Conocer la morfología ocular es crucial para la formación de estudiantes de medicina; sin embargo, el aprendizaje de la anatomía del ojo está limitado a modelos virtuales e ilustraciones que no ofrecen una impresión real de la cavidad orbitaria y su contenido. Al respecto, se ha demostrado que el uso de técnicas de disección mejora el...
Article
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Background Most animal eyes feature an opaque pigmented eyecup to assure that light can enter from one direction only. We challenge this dogma by describing a previously unknown form of eyeshine resulting from light that enters the eye through the top of the head and optic nerve, eventually emanating through the pupil as a narrow beam: the Optic-Ne...
Article
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This chapter describes current knowledge on the ocular structure, function and barrier properties to drug delivery. A broad description of different ocular parts and their histology is provided. Different routes of drug administration such as topical, oral, intravenous, subconjunctival, periocular and intravitreal routes are employed to treat ocula...
Chapter
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Eyes are like windows to the outside world, but their intricacies and functionalities are far more extensive than those of any given glass window. They are able to capture, adjust, and transform light into a chemical code that only the brain can decipher. Each structure of the eye works in accord with the next – refracting, constricting, dilating a...
Article
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The eye of aquatic mammals demonstrates several adaptations to both underwater and aerial vision. This study offers a review of eye anatomy in four groups of aquatic animals: cetaceans (toothed and baleen whales), pinnipeds (seals, sea lions, and walruses), sirenians (manatees and dugongs), and sea otters. Eye anatomy and optics, retinal laminar mo...
Conference Paper
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A óptica é a área do conhecimento que estuda a luz e seu comportamento. Parte integrante da ementa da disciplina de Física do Ensino Médio, a óptica é muitas vezes deixada de lado ou ministrada convencionalmente, sem dinâmica e experimentação, deixando algumas deficiências no aprendizado. Assim, o presente trabalho tem como objetivos trabalhar os c...
Chapter
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The eye is a small yet multifaceted unit of anatomical machinery in which each structure works in accord with the next, refracting, constricting, dilating and chemically reacting to convert patterns of light into discernible images. Eyes can be divided into two broad categories: the ‘simple’ eye of vertebrates and the compound eye of invertebrates.
Article
Introducción: La alta prevalencia de Diabetes Mellitus tipo 2 en México ha posicionado a la retinopatía diabética como la principal causa de ceguera en adultos en edad productiva en México. Por ello, la detección oportuna de este padecimiento es una tarea prioritaria para el sistema público de salud. En el presente artículo se estudia el desempeño...
Chapter
Treatment of ocular tissues is attempted to remedy infection, inflammatory disease and the sequelae of pathological systemic changes such as diabetes and degenerative changes associated with ageing. The anatomical features of the orbit and physiological mechanisms are important in understanding the possible limitations in drug delivery objectives a...
Chapter
This chapter focuses on the structure and functions of the human eye. The eye is a complicated sensory organ that consists of the anterior chamber and the posterior chamber. The anterior chamber encompasses the cornea, iris, lens, ciliary body and the anterior sclera while the posterior chamber consists of the retina, choroid and the optic nerve. T...
Chapter
Several disorders impacting the eye can result in irreversible visual damage. Anterior uveitis, conjunctivitis, and cataract are categorized as anterior segment diseases of the eye while diseases of the posterior segment include age-related macular degeneration, retinitis pigmentosa, and diabetic retinopathy. Ocular drug delivery is complicated bec...
Article
Many walking insects use vision for long-distance navigation, but the influence of vision on rapid walking performance that requires close-range obstacle detection and directing the limbs towards stable footholds remains largely untested. We compared Argentine ant ( Linepithema humile ) workers in light versus darkness while traversing flat and une...
Article
From the early period of Islam, Muslim scholars have translated the ancient Greek medical works, and they reached a much more advanced level. Blindness was a major cause of disability in all Islamic geography, so physicians from Islamic territory, particularly Yuhanna ibn Masawayh, Hunain Ibn Ishaq, Rhazes, Ali bin Isa, Ibn-i Sina, and Ibn Al-Haita...
Chapter
Ao longo deste capítulo veremos como é possível estudar a mente através dos olhos. Para tanto, nos apoiaremos na hipótese eye-mind formulada por Just e Carpenter (1980), a qual pressupõe uma relação direta entre as palavras que estão sendo fixadas e o seu processamento cognitivo. Esta hipótese serve como base para muitos estudos que investigam o pr...
Chapter
Thyroid eye disease (TED) is an autoimmune condition usually associated with thyroid dysfunction and characterised by inflammatory and fibrotic changes in the periocular tissues. It is most commonly associated with hyperthyroidism, but patients with TED may also be hypothyroid or euthyroid, and it does not always present at the same time as the thy...
Chapter
Over the centuries, the imaginative faculty had been linked to different cerebral ventricles, attached to the senses as well as reason, divided into parts and reunified. Imagination’s uncertain physiology was further complicated by the ground-breaking advances made by anatomists such as Andreas Vesalius—for psychologists had now to reconcile empiri...
Chapter
There are approximately 285 million people worldwide who are visually impaired. The most common eye conditions are cataracts, glaucoma, macular degeneration, diabetic retinopathy, and corneal diseases. Conventional treatments for eye diseases, such as those affecting the cornea, include the use of grafts. However, there are limitations associated w...
Article
Los defectos de refracción pueden ser corregidos mediante lentes oftálmicos, lentes de contacto y cirugía refractiva (1). La cirugía refractiva abarca un conjunto de procedimientos quirúrgicos, los cuales modifican la anatomía del ojo para lograr la emetropía artificial (2). Las técnicas quirúrgicas corneales se clasifican en incisionales o querato...
Chapter
The process of vision starts when light successfully travels through the eyeball to be focused on the retina. The eye, the visual organ, is a sphere formed of three layers. The outer layer is a connective tissue layer formed of the sclera posteriorly and the cornea anteriorly. The middle layer is a pigmented layer formed of the choroid. The choroid...
Data
Em recente estudo, mostramos que não é possível estabelecer uma clara distinção entre estudos de óptica e de perspectiva quando nos referimos aos séculos XVI e XVII. Embora a perspectiva lidasse com a representação do espaço numa superfície bidimensional (matematicamente), ela, entretanto, estava estreitamente ligada a outras questões relativas à v...
Thesis
The Jacky dragon (Amphibolurus muricatus), a semi-arboreal agamid lizard native to south{u00AD}eastern Australia, competes for territories using a rapid sequence of distinct body movements initiated by tail flicks and followed by foreleg waves, head bobs and push-ups. Detection of these signals is particularly challenging against a background of wi...
Article
This chapter introduces the basics of eye anatomy, eye movements and vision. It will explain the concepts behind human vision sufficiently for the reader to understand later chapters in the book on human perception and attention, and their relationship to (and potential measurement with) eye movements. We will first describe the path of light from...
Article
Using a three-dimensional modeling computer program, the authors created a three-dimensional, highly detailed computer-generated model of a normal eye to enhance the teaching of basic ophthalmic anatomy. The resulting model is a uniquely detailed virtual eye that can illustrate ocular anatomy clearly but realistically at many levels of magnificatio...
Article
Using a three-dimensional modeling computer program, the authors created a three-dimensional, highly detailed computer-generated model of a normal eye to enhance the teaching of basic ophthalmic anatomy. The resulting model is a uniquely detailed virtual eye that can illustrate ocular anatomy clearly but realistically at many levels of magnificatio...
Book
Completion of the first phase of the Human Genome Project has presented scientists with a mountain of new information. The availability of all human genes and their locations is exciting, but their mechanisms of action and interaction with other genes are often unknown. Certain variations in the environment and characteristics of human genes make i...
Article
Purpose: Orbital and global layers of rectus extraocular muscles (EOMs) are believed to serve different functions. This study sought anatomic and functional evidence of differing blood flow in the two layers of rectus EOMs. Methods: Four human orbits ranging in age from 17 months to 93 years were serially sectioned and stained for muscle fibers...