Confrontation Visual Fields - University of Iowa
Jan 12, 2017 · Confrontation visual field testing. Richard C. Allen, MD, PhD, FACS Additional Notes: Length 00:27. Confrontation visual field testing involves having the patient looking directly at your eye or nose and testing each quadrant in the patient's visual field by having them count the number of fingers that you are showing.
Basic Pediatric Eye Exam - University of Iowa
Sep 11, 2020 · Confrontation Visual Fields. Confrontation visual fields can be tested in a similar manner. Cover one eye and hold an interesting object in one hand outside of the visual field. While having the child fixate on your nose, slowly move the object towards fixation and observe for a saccade. This indicates the field is intact. Test all four quadrants.
Hydroxychloroquine (Plaquenil) Toxicity and Recommendations …
Aug 30, 2011 · This has similar sensitivity to visual fields and can provide objective confirmation of suspected paracentral field loss. Fundus Autofluorescence (FAF): Early hydroxychloroquine toxicity can also be detected on autofluorescence as an increased ring of signal within the parafoveal and extramacular regions, which is indicative of photoreceptor ...
Functional Visual Loss - University of Iowa
Mar 6, 2013 · This can be done with confrontation visual field testing or with formal evaluation such as Humphrey or Goldmann visual field testing. Goldmann visual field testing: Nonorganic visual fields often demonstrate a spiraling field that becomes smaller as the test object is moved around the field. Crossing isopters or a visual field that remains the ...
Medical Student Online Ophthalmology Curriculum - University of …
Aug 3, 2020 · Examination: Best corrected visual acuity with/without pinhole, ocular motility, pupil exam (including size, reactivity and presence of afferent pupillary defect), confrontation visual fields, external examination, slit lamp examination, intraocular pressures, direct ophthalmoscopy. Assessment: Organized by problem if there are multiple problems
Acute Macular Neuroretinopathy - University of Iowa
Apr 1, 2019 · Goldmann Visual Fields (GVF) OU three days after initial presentation. There was a five-degree central scotoma to the V4e isopter OU. The I2e isopter was also constricted with complete loss of the I1e isopter OD (right image). There was superior constriction of the I1e isopter OS (left image).
Visual Field Testing: From One Medical Student to Another
This method of testing is referred to as confrontation visual field evaluation. Quantification of visual fields was developed during the nineteenth century. Jannik Bjerrum began mapping visual fields by asking patients to identify whether a white object on the end of a black stick, in front of a black screen, was seen.
Optic Neuritis - University of Iowa
Sep 30, 2012 · Visual field testing can show various nerve fiber bundle defects. In a study of 448 patients with acute optic neuritis, 48.2% of affected eyes had diffuse visual field loss, 20.1% of eyes had altitudinal or other nerve fiber bundle-type defects, and 8.3% had central or cecocentral scotomas (Keltner, 1993).
The age of isopter perimetry - University of Iowa
New devices kept appearing. Schweigger made a ‘hand perimeter’, which was held up to the patient’s eye while the doctor moved the test object. After almost 100 years this is still available in optical supply catalogs. It gives no more information than confrontation fields and it is considerably more ‘cumbrous’.
Acquired Peripheral Retinoschisis - University of Iowa
Oct 31, 2016 · There is an absolute visual field deficit through the entire area. Figure 1a: (OD) Fundus photo showing temporal retinoschisis from 7:00 to 10:00 without identified inner, outer, or full-thickness retinal breaks extending into the temporal macula.