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- A visual field test can determine if you have blind spots (called scotoma) in your vision and where they are. A scotoma’s size and shape can show how eye disease or a brain disorder is affecting your vision. For example, if you have glaucoma, this test helps to show any possible side (peripheral) vision loss from this disease.
www.aao.org/eye-health/tips-prevention/visual-field-testing
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May 7, 2020 · Blind spot assessment occasionally features in OSCEs. This guide provides a step-by-step approach to assessing a patient’s blind spot. It also includes a video demonstration.
- Dr Lewis Potter
OSCE Checklist: Blind Spot Assessment. Ask the patient to focus on part of your face (e.g. nose) and not move their head or eyes during the assessment. You should do the same and focus your gaze on the patient’s face.
3 days ago · A visual field test is an eye exam that checks for blind spots in your line of vision, It can help determine the cause of vision problems, including glaucoma.
Aug 28, 2013 · Assessment of visual acuity (distance) Begin by assessing the patient’s visual acuity using a Snellen chart.
A physiologic scotoma (a blind spot) exists at 15° temporally where the optic nerve leaves the eye. Definitive location varies slightly on an individual basis. The average blind spot is 7.5° in diameter, vertically centered 1.5° below the horizontal meridian [3].
Patterns Visual Field LossClassic Location Of DefectGeneralized decrease in sensitivityMedia opacity (cornea, lens, or ...Constriction of the visual fieldRetina, optic nerve, small pupilsRing scotomaRetina degenerationCentral scotomaMacula or optic nerveMay 31, 2015 · 3. The blind spot indicates the location of the optic nerve head—an area with no photoreceptors—in the temporal part of the visual field. 4. Anything obstructing the travel of light towards the retina may affect the field tests, for example, lens opacity (cataract), ptosis (if not taped away from the pupil) or the rim of a correcting lens ...
The point where your optic nerves converge to exit the eye and into the brain is known as the optic disc. This area of the eye has no light-sensitive cells to detect light rays. This results in a break in the visual field known as your “blind spot.” When the cross mark disappears, you instead “see” a continuous white field.
