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  2. Glaucoma - Wikipedia

    en.wikipedia.org/wiki/Glaucoma

    Glaucoma is a group of eye diseases that lead to damage of the optic nerve, which transmits visual information from the eye to the brain. Glaucoma may cause vision loss if left untreated. It has been called the "silent thief of sight" because the loss of vision usually occurs slowly over a long period of time. [5]

  3. Bjerrum's area - Wikipedia

    en.wikipedia.org/wiki/Bjerrum's_area

    Bjerrum's area is the central 25° of the visual field from the fixation point, popularized scientifically by the Danish ophthalmologist Jannik Petersen Bjerrum . Bjerrum believed that this central portion of the visual field was of far more often use than the perimeter of the visual field, since he had observed 90% of the early glaucomatous ...

  4. Visual field - Wikipedia

    en.wikipedia.org/wiki/Visual_field

    The visual field is "that portion of space in which objects are visible at the same moment during steady fixation of the gaze in one direction"; [1] in ophthalmology and neurology the emphasis is mostly on the structure inside the visual field and it is then considered “the field of functional capacity obtained and recorded by means of ...

  5. Visual system - Wikipedia

    en.wikipedia.org/wiki/Visual_system

    The visual system is the physiological basis of visual perception (the ability to detect and process light ). The system detects, transduces and interprets information concerning light within the visible range to construct an image and build a mental model of the surrounding environment.

  6. Humphrey visual field analyser - Wikipedia

    en.wikipedia.org/wiki/Humphrey_Visual_Field_Analyser

    Humphrey field analyser ( HFA) is a tool for measuring the human visual field that is commonly used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field. [1] The results of the analyser identify the type of vision defect. Therefore, it provides information regarding the location of any disease ...

  7. Normal tension glaucoma - Wikipedia

    en.wikipedia.org/wiki/Normal_tension_glaucoma

    Normal tension glaucoma. Normal tension glaucoma (NTG) is an eye disease, a neuropathy of the optic nerve, that shows all the characteristics of primary open angle glaucoma except one: the elevated intraocular pressure (IOP) - the classic hallmark of glaucoma - is missing. Normal tension glaucoma is in many cases closely associated with general ...

  8. Uveitic glaucoma - Wikipedia

    en.wikipedia.org/wiki/Uveitic_glaucoma

    Uveitic glaucoma is a progressive stage of anterior noninfectious uveitis. Patients diagnosed with anterior noninfectious uveitis may also develop glaucoma; in this case the condition is termed uveitic glaucoma. Uveitic glaucoma can arise from the inflammation that occurs in uveitis; from steroid treatment for uveitis; [6] or a combination of both.

  9. Fundus (eye) - Wikipedia

    en.wikipedia.org/wiki/Fundus_(eye)

    Fundus (eye) Fundus photographs of the right eye (left image) and left eye (right image), as seen from the front (as if face to face with the viewer). Each fundus has no sign of disease or pathology. The gaze is into the camera, so in each picture the macula is in the center of the image, and the optic disc is located towards the nose.

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