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Three questions: Does this chart tell me the actual degree of blindness in the visual field? The visual field efficiency score? What does a 1% VFI percentage mean?
May 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 ...
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- Sui H Wong, Gordon T Plant
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May 7, 2020 · This guide provides a step-by-step approach to assessing a patient’s blind spot. It also includes a video demonstration. Download the blind spot assessment PDF checklist, or use our interactive checklist. You may also be interested in our complete guide to the examination of the eyes and assessment of vision.
- Dr Lewis Potter
3 days ago · A visual field test can help diagnose scotomas, or blind spots. It can also help identify loss of peripheral or side vision. Loss of side vision is an indicator of glaucoma, a disease that can lead to blindness. This article describes what to expect during a visual field test, why it's done, and what the results mean.
Mar 7, 2020 · Fixation monitor: ‘Blind spot’. The machine works out where the person’s natural blind spot is and occasionally flashes a spot directly in it. If the patient is looking at the central fixation target (usually a steady central yellow light) they shouldn’t be able to see the flash in their natural blind spot.
Feb 18, 2021 · If you detect a defect, re-examine that area and define it further. Assess the blind spot (if you can't find it, then it's probably not enlarged). Repeat for the fellow eye. Then systematically assess: Pupils and optic nerve function (visual acuity, relative afferent pupillary defect, colour impairment and brightness sensitivity). Fundus.
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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.