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20 sty 2024 · In a normal person, the field of vision should span a total width of 190 degrees. The macula, which is the central part of the retina (and is therefore important for central vision), corresponds to the central 12 to 13 degrees of your visual field.
The normal (monocular) human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) from the vertical meridian in each eye, to 107 degrees temporally (away from the nose, or outwards) from the vertical meridian, and approximately 70 degrees above and 80 below the horizontal meridian.
For each eye a normal visual field extends approximately 50⁰ superiorly, 60⁰ nasally, 70⁰ inferiorly and 90⁰ temporally from central fixation. The field of vision is restricted superiorly by the upper lid and/or the bony orbital rim, and nasally by the bridge of the nose.
The normal range of intraocular pressure is 10 to 21 millimeters of mercury (mmHg), which is based on the average levels of IOP in normal individuals.[1] Glaucoma is a progressive optic neuropathy that leads to irreversible visual field damage, retinal nerve fiber layer thinning, and possible central visual acuity loss at the end stages of the ...
A normal visual field is an island of vision measuring 90 degrees temporally to central Fixation, 50 degrees superiorly and nasally, and 60 degrees inferiorly. Visual acuity increases from movement discrimination in the extreme peripheral vision to better than 20/20 in the center of vision.
21 lis 2024 · A normal visual field of each eye usually spans over 120 degrees horizontally and 90 degrees vertically. This slide shows the field of view through a normal eye. Glaucoma is a disease of the optic nerve, and one of the best ways to measure disease of the optic nerve is to assess its function with visual field testing.
12 gru 2015 · It’s helpful to know the generally accepted “normal” visual field extent (not factoring visual sensitivity), which corresponds to the retinal anatomy. If you sum these numbers, you theoretically should have about a total of 120° of vertical visual field extent, and around 160° of horizontal extent.
