DRIVING VISION (Safe Drive Training) - sdt.com.au 0-100 (degrees) 0-60 (degrees) TEMPORAL - OD. Answer (1 of 3): Approximately 120 degrees Actually every eye has a little bigger range, but when the brain combines the image it's 120 degrees. what is the average horizontal field of vision for each eye? Quick Answer: How many degrees can a human see? Results: The 30 degrees central visual field was divided into 15 sectors consisting of at least 3 points. It could be just a little vision lost in a small area, or all vision lost in large areas. For the 34 states with a binocular horizontal visual field requirement, 15 stipulate 140 degrees; for the other 19 states, the range is from 105 degrees to 130 degrees; Maine requires 150 degrees. Answer (1 of 2): Short answer: its basically 180 degrees. Visual Fields - Our Side Vison » Eye Care Specialists at ... The diagnosis of any vision issue requires a detailed evaluation be obtained from your treating physician to demonstrate DOT medical fitness. The height and shape of the normal hill varies by individual but is fairly consistent in normal same age individuals. In general, glaucomatous visual field defects are almost always localized initially, respect the horizontal meridian, begin nasal to the blind spot, and are almost always detectable within the central 24 to 30 degrees of vision. PDF Confrontation Visual Fields - AUPO Visual Field Testing: What Is It & Understanding Results Initial glaucoma damage is seen as a cluster of points just above or just below the horizontal horizon, most often on the side toward the nose (left of center in a right eye). A person must have a minimum corrected (with glasses or contacts) visual acuity of 20/50 to qualify for a restricted license (drive with corrective lenses). what field of view do humans have - Lisbdnet.com Look at the pattern. A physiologic scotoma (a blind spot) exists at 15° temporally where the optic nerve leaves the eye. Visual Fields - Clinical Methods - NCBI Bookshelf PDF CUSTOMER VISION REPORT - Virginia Buying Guide: Comparing Field of View When Buying a ... PDF Georgia Department of Driver Services Vision Report 1  One eye will be tested at a time since visual fields of each eye overlap. This means when stationary we have a 180° horizontal visual field and a 130° vertical visual field. If possible, measure the below at 20 feet. At speed however our vision focuses automatically further ahead and thus the visual field reduces in all directions. When my horizontal visual fields were measured the results were Left Eye: 78-80 degrees and Right Eye: 75 - 80 Degrees. Demonstrate a visual acuity of at least 20/200 in one or both eyes and a field of 70 degrees horizontal vision with or without corrective carrier lenses, or if the person has vision in . DMV Visual Field information: See Note C on page 2. In the United Kingdom, the minimum field requirement for driving is 60 degrees either side of the vertical meridian, and 20 degrees above and below horizontal. The visual impact of a development will vary according to the proportion in which a de velopment impacts on the central field of vision. W (horizontal width) = (distance) * 3.2 mm / (Lens Focal Length) where 3.2 mm is the horizontal size of 1/4″ CCTV sensor (4.8 mm for 1/3″ sensor). Confirm it's the right/left eye. Developments which take up less than 5% of the central . Click here to see all our cameras that fit within this range. • Visual acuity of 20/60 or better, corrected or uncorrected in at least one eye • Horizontal field of vision with both eyes open of at least 140 degrees • In the event that only one eye has usable vision, the horizontal field of vision must be at least 70 degrees temporally and 50 degrees nasally. The hill is highest at fixation, where the visual sensitivity . roughly 180 degrees As you can see from this image, humans have . The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees. Field of View is an angle which depends on the focal length and sensor size, but it also computes dimensional Field of View sizes (width, height, or diagonal fields) at some specific distance, like at the subject distance, or at a background distance. 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. The Visual Field. NORTH CAROLINA. A shaded, semi-circular wedge shape depicting the horizontal range of the right visual field extends from the eye along a horizontal plane and is bisected by a line, dividing the wedge into the nasal and temporal fields. If the visual fields of the two eyes are superimposed as in normal vision, the binocular visual field covers up to 180 degrees along the horizontal meridian. The normal human visual field is widest horizontally, extending over 90 degrees temporally, 60 degrees nasally and superiorly, and 70 degrees inferiorly. Horizontal range, binocular, and monocu…. Visual field testing should be carried out in each eye separately. If the state allows patients to drive with a horizontal visual field of 120 degrees or less, permanent peripheral prisms may be able to help the patient meet the visual field requirement. 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. I can't see how i would need 150 for each eye, if so these doctors would be way off from one another. Linear field of view = 2 (Tan (Angle of view/2) X Distance to Subject) Common Focal Lengths and Their Corresponding FOVs. 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. At 10 feet it equals 14 feet across.Most of our conference room cameras fit within this range - from a low of 67 degree to a high of 82 degree. (Image adapted from the internet) The diagram above depicts the normal horizontal field of vision, including the location of the blind spots for both eyes. Look at the reliability indices. This includes but is not limited to: color or field of vision deficits, inadequate visual acuity, the use of a contact lens in one eye for distant correction and another lens in the other eye correcting for near vision, and telescopic lenses. A normal visual field extends approximately 100° temporally (laterally), 60° nasally, 60° superiorly, and 70° inferiorly [2]. 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. Visual acuity increases from movement discrimination in the extreme peripheral vision to better than 20/20 in the center of vision . However, it'll also allow you to see slightly farther than human vision. For those used to thinking in terms of 35mm cameras these would correspond to lenses with focal lengths of 20mm, 50mm and 300mm respectively. The visual field can be divided into central and peripheral portions. visual field. Many patients hope to drive with hemianopsia. How Does The DOT Vision Test Work?. VISUAL ACUITY (See Note "A" on page 2) HORIZONTAL VISUAL FIELD (fields must be in degrees) Check applicable: Vision in both eyes. A normal visual field of each eye usually spans over 120 degrees horizontally and 90 degrees vertically. Compare to the previous visual fields. 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. 2 degrees diameter of central vision; no rods; makes up only 1…. NORMALVISUAL FIELD The normal human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) from the vertical meridian in each eye, to 100 degrees temporally (away from the nose, or outwards) from the vertical meridian, and approximately 60 degrees above and 75 below the horizontal meridian. The upper and lower halves of the visual field appear to be equal, with the limits at approximately 50 to 60 degrees eccentricity, although there are large individual differences. The retina extends father forward than most people think. The normal human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) in each eye, to 100 degrees temporally (away from the nose, or outwards), and approximately 60 degrees above and 75 below the horizontal meridian. Vision Limited to RIGHT EYE (OD) ONLY A "normal" visual field test means that the patient can see about as well as anyone else does in the center and around the edges of the visual field. Click to see full answer. The region of binocular overlap is 120 deg (w) x 135 deg (h) ( WebVision ). Some states require 120 degrees of horizontal field in order to obtain a drivers license. NASAL - OS. 1. Consequently, a visual field defect in one eye will still register as having normal vision when both eyes are open. adjust the vertical and horizontal . The limits of visual field for each fixing eye is 60 degrees superiorly and nasally, 75 degrees inferiorly and 110 degrees temporally. . 13 The pattern deviation plot should be consistent with glaucomatous damage of nerve fiber layer bundles. The temporal field on the other side of the axis is 100 degrees for a . The approximate field of view of an individual human eye is 95° away from the nose, 75° downward, 60° toward the nose, and 60° upward, allowing humans to have a slightly more than 180-degree forward-facing horizontal field of view. The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees. Definitive location varies slightly on an individual basis. This means each eye gives you a horizontal field range of 155 degrees and vertical field range of 135 degrees at a given time. Moreover, what is the normal field of view for a human? Its submitted by processing in the best field. This second test wanted degrees for each eye listed. Here are a number of highest rated Normal Field Of Vision Degrees pictures on internet. Improve this answer. The resolution (both spatial and temporal) is highly variable across the field of view, and the lateral field is wider than the vertical, but in some people this is because the face gets in . ~60 degrees above horizontal meridian. problems were identified, e.g., the statement of the visual field requirement and need for a specific color vision requirement in the current standard The visual field requirement left doubt as to what the actual specification of horizontal field extent should be for each eye (70 degrees or 140 degrees), and the color vision requirement was This was first discovered in the 1500s by Leonardo da Vinci. (including horizontal fields) must be completed. Visual acuity increases from movement discrimination in the extreme peripheral vision to better than 20/20 in the center of vision. The same holds true for binocular defects that occupy different positions in space. In this age of evidence-based standards, it is pertinent to justify the current visual acuity standards. eg "The Canon 35mm lens has an angular field of view of 54.4 degrees and a linear field of view of 103ft at 1000yds". The distribution of sectors was compatible with the projection of nerve fiber layers. Some birds have a scant 10 or 20 degrees of binocular vision. The edge of the cornea acts as a fish-eye lens. A person with two functional eyes must have a field vision of 140 degrees. [43] Subjects with very low VA, (V01, V02 and V03) were . Perimetry Basics •Visual Field Orientation •The nasal retina sees objects in the temporal field and the superior retina If we want a "normal" shot we want a "normal" field of view (say, 40 degrees horizontal) and if we want a telephoto shot, we want a narrow field of view (say 6.5 degrees horizontal). Most often used when also using the term AFOV. The visual field is measured by perimetry . Telephoto. The vertical range of the visual . The macula corresponds to the central 13 degrees of the visual field; the fovea to the central 3 degrees. Consequently, a visual field defect in one eye will still register as having normal vision when both eyes are open. The applicant shall have a horizontal visual field diameter of no less than one hundred fifty (150) degrees without the use of field expanders. The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees.The normal binocular (using both eyes) visual field is 135 degrees vertically and 180 degrees horizontally from the fixed point. While the normal human visual field is widest horizontally there is an important consideration for those who fly under Sport Pilot or Basic Medical Rules. For this peripheral vision test, your eye doctor will sit right across from you and ask you to cover one eye. A test that shows visual field loss means that vision in some areas is not as sensitive as normal. at 57cm from your eye (arm length), 2cm of your visual field (…. At 100 km/h our horizontal visual field is only 40° (20° to the left and right of our line of sight). The binocular field extends the horizontal extent from 160 to 200 degrees, with the central 120 degrees over lapping and providing the potential for stereopsis. Normal visual field is: 60 degrees nasally, 100 degrees temporally, 75 degrees inferiorly and 60 degrees superiorly. Visual field is the part of environment that is visible to the steadily fixing eye. We identified it from obedient source. These objects lie outside your central field of vision, in what is called your peripheral vision. Partial Quadrantanopia may be considered if the individual demonstrates an adequate field of vision in the unaffected side and the affected side retains or regains 30 degrees temporally along the horizontal line while demonstrating 15 degrees above and below the horizontal line for the full 30 degrees. A test that shows visual field loss means that vision in some areas is not as sensitive as normal. Start with a simple Confrontational Visual Field Exam. You'll be asked to stare straight ahead while they slowly bring one of their hands from one side into your peripheral vision. 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. Normal tests have no "black" areas, which are locations where vision isn't normal. Moreover, the horizontal visual field should be at least 120 degrees; the extension should be at least 50 degrees left and right and 20 degrees up and down . 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normal horizontal field of vision degrees

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DRIVING VISION (Safe Drive Training) - sdt.com.au 0-100 (degrees) 0-60 (degrees) TEMPORAL - OD. Answer (1 of 3): Approximately 120 degrees Actually every eye has a little bigger range, but when the brain combines the image it's 120 degrees. what is the average horizontal field of vision for each eye? Quick Answer: How many degrees can a human see? Results: The 30 degrees central visual field was divided into 15 sectors consisting of at least 3 points. It could be just a little vision lost in a small area, or all vision lost in large areas. For the 34 states with a binocular horizontal visual field requirement, 15 stipulate 140 degrees; for the other 19 states, the range is from 105 degrees to 130 degrees; Maine requires 150 degrees. Answer (1 of 2): Short answer: its basically 180 degrees. Visual Fields - Our Side Vison » Eye Care Specialists at ... The diagnosis of any vision issue requires a detailed evaluation be obtained from your treating physician to demonstrate DOT medical fitness. The height and shape of the normal hill varies by individual but is fairly consistent in normal same age individuals. In general, glaucomatous visual field defects are almost always localized initially, respect the horizontal meridian, begin nasal to the blind spot, and are almost always detectable within the central 24 to 30 degrees of vision. PDF Confrontation Visual Fields - AUPO Visual Field Testing: What Is It & Understanding Results Initial glaucoma damage is seen as a cluster of points just above or just below the horizontal horizon, most often on the side toward the nose (left of center in a right eye). A person must have a minimum corrected (with glasses or contacts) visual acuity of 20/50 to qualify for a restricted license (drive with corrective lenses). what field of view do humans have - Lisbdnet.com Look at the pattern. A physiologic scotoma (a blind spot) exists at 15° temporally where the optic nerve leaves the eye. Visual Fields - Clinical Methods - NCBI Bookshelf PDF CUSTOMER VISION REPORT - Virginia Buying Guide: Comparing Field of View When Buying a ... PDF Georgia Department of Driver Services Vision Report 1  One eye will be tested at a time since visual fields of each eye overlap. This means when stationary we have a 180° horizontal visual field and a 130° vertical visual field. If possible, measure the below at 20 feet. At speed however our vision focuses automatically further ahead and thus the visual field reduces in all directions. When my horizontal visual fields were measured the results were Left Eye: 78-80 degrees and Right Eye: 75 - 80 Degrees. Demonstrate a visual acuity of at least 20/200 in one or both eyes and a field of 70 degrees horizontal vision with or without corrective carrier lenses, or if the person has vision in . DMV Visual Field information: See Note C on page 2. In the United Kingdom, the minimum field requirement for driving is 60 degrees either side of the vertical meridian, and 20 degrees above and below horizontal. The visual impact of a development will vary according to the proportion in which a de velopment impacts on the central field of vision. W (horizontal width) = (distance) * 3.2 mm / (Lens Focal Length) where 3.2 mm is the horizontal size of 1/4″ CCTV sensor (4.8 mm for 1/3″ sensor). Confirm it's the right/left eye. Developments which take up less than 5% of the central . Click here to see all our cameras that fit within this range. • Visual acuity of 20/60 or better, corrected or uncorrected in at least one eye • Horizontal field of vision with both eyes open of at least 140 degrees • In the event that only one eye has usable vision, the horizontal field of vision must be at least 70 degrees temporally and 50 degrees nasally. The hill is highest at fixation, where the visual sensitivity . roughly 180 degrees As you can see from this image, humans have . The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees. Field of View is an angle which depends on the focal length and sensor size, but it also computes dimensional Field of View sizes (width, height, or diagonal fields) at some specific distance, like at the subject distance, or at a background distance. 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. The Visual Field. NORTH CAROLINA. A shaded, semi-circular wedge shape depicting the horizontal range of the right visual field extends from the eye along a horizontal plane and is bisected by a line, dividing the wedge into the nasal and temporal fields. If the visual fields of the two eyes are superimposed as in normal vision, the binocular visual field covers up to 180 degrees along the horizontal meridian. The normal human visual field is widest horizontally, extending over 90 degrees temporally, 60 degrees nasally and superiorly, and 70 degrees inferiorly. Horizontal range, binocular, and monocu…. Visual field testing should be carried out in each eye separately. If the state allows patients to drive with a horizontal visual field of 120 degrees or less, permanent peripheral prisms may be able to help the patient meet the visual field requirement. 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. I can't see how i would need 150 for each eye, if so these doctors would be way off from one another. Linear field of view = 2 (Tan (Angle of view/2) X Distance to Subject) Common Focal Lengths and Their Corresponding FOVs. 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. At 10 feet it equals 14 feet across.Most of our conference room cameras fit within this range - from a low of 67 degree to a high of 82 degree. (Image adapted from the internet) The diagram above depicts the normal horizontal field of vision, including the location of the blind spots for both eyes. Look at the reliability indices. This includes but is not limited to: color or field of vision deficits, inadequate visual acuity, the use of a contact lens in one eye for distant correction and another lens in the other eye correcting for near vision, and telescopic lenses. A normal visual field extends approximately 100° temporally (laterally), 60° nasally, 60° superiorly, and 70° inferiorly [2]. 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. Visual acuity increases from movement discrimination in the extreme peripheral vision to better than 20/20 in the center of vision . However, it'll also allow you to see slightly farther than human vision. For those used to thinking in terms of 35mm cameras these would correspond to lenses with focal lengths of 20mm, 50mm and 300mm respectively. The visual field can be divided into central and peripheral portions. visual field. Many patients hope to drive with hemianopsia. How Does The DOT Vision Test Work?. VISUAL ACUITY (See Note "A" on page 2) HORIZONTAL VISUAL FIELD (fields must be in degrees) Check applicable: Vision in both eyes. A normal visual field of each eye usually spans over 120 degrees horizontally and 90 degrees vertically. Compare to the previous visual fields. 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. 2 degrees diameter of central vision; no rods; makes up only 1…. NORMALVISUAL FIELD The normal human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) from the vertical meridian in each eye, to 100 degrees temporally (away from the nose, or outwards) from the vertical meridian, and approximately 60 degrees above and 75 below the horizontal meridian. The upper and lower halves of the visual field appear to be equal, with the limits at approximately 50 to 60 degrees eccentricity, although there are large individual differences. The retina extends father forward than most people think. The normal human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) in each eye, to 100 degrees temporally (away from the nose, or outwards), and approximately 60 degrees above and 75 below the horizontal meridian. Vision Limited to RIGHT EYE (OD) ONLY A "normal" visual field test means that the patient can see about as well as anyone else does in the center and around the edges of the visual field. Click to see full answer. The region of binocular overlap is 120 deg (w) x 135 deg (h) ( WebVision ). Some states require 120 degrees of horizontal field in order to obtain a drivers license. NASAL - OS. 1. Consequently, a visual field defect in one eye will still register as having normal vision when both eyes are open. adjust the vertical and horizontal . The limits of visual field for each fixing eye is 60 degrees superiorly and nasally, 75 degrees inferiorly and 110 degrees temporally. . 13 The pattern deviation plot should be consistent with glaucomatous damage of nerve fiber layer bundles. The temporal field on the other side of the axis is 100 degrees for a . The approximate field of view of an individual human eye is 95° away from the nose, 75° downward, 60° toward the nose, and 60° upward, allowing humans to have a slightly more than 180-degree forward-facing horizontal field of view. The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees. Definitive location varies slightly on an individual basis. This means each eye gives you a horizontal field range of 155 degrees and vertical field range of 135 degrees at a given time. Moreover, what is the normal field of view for a human? Its submitted by processing in the best field. This second test wanted degrees for each eye listed. Here are a number of highest rated Normal Field Of Vision Degrees pictures on internet. Improve this answer. The resolution (both spatial and temporal) is highly variable across the field of view, and the lateral field is wider than the vertical, but in some people this is because the face gets in . ~60 degrees above horizontal meridian. problems were identified, e.g., the statement of the visual field requirement and need for a specific color vision requirement in the current standard The visual field requirement left doubt as to what the actual specification of horizontal field extent should be for each eye (70 degrees or 140 degrees), and the color vision requirement was This was first discovered in the 1500s by Leonardo da Vinci. (including horizontal fields) must be completed. Visual acuity increases from movement discrimination in the extreme peripheral vision to better than 20/20 in the center of vision. The same holds true for binocular defects that occupy different positions in space. In this age of evidence-based standards, it is pertinent to justify the current visual acuity standards. eg "The Canon 35mm lens has an angular field of view of 54.4 degrees and a linear field of view of 103ft at 1000yds". The distribution of sectors was compatible with the projection of nerve fiber layers. Some birds have a scant 10 or 20 degrees of binocular vision. The edge of the cornea acts as a fish-eye lens. A person with two functional eyes must have a field vision of 140 degrees. [43] Subjects with very low VA, (V01, V02 and V03) were . Perimetry Basics •Visual Field Orientation •The nasal retina sees objects in the temporal field and the superior retina If we want a "normal" shot we want a "normal" field of view (say, 40 degrees horizontal) and if we want a telephoto shot, we want a narrow field of view (say 6.5 degrees horizontal). Most often used when also using the term AFOV. The visual field is measured by perimetry . Telephoto. The vertical range of the visual . The macula corresponds to the central 13 degrees of the visual field; the fovea to the central 3 degrees. Consequently, a visual field defect in one eye will still register as having normal vision when both eyes are open. The applicant shall have a horizontal visual field diameter of no less than one hundred fifty (150) degrees without the use of field expanders. The visual field is the extent of the area that a person can see with their eyes held in a fixed position, usually measured in degrees.The normal binocular (using both eyes) visual field is 135 degrees vertically and 180 degrees horizontally from the fixed point. While the normal human visual field is widest horizontally there is an important consideration for those who fly under Sport Pilot or Basic Medical Rules. For this peripheral vision test, your eye doctor will sit right across from you and ask you to cover one eye. A test that shows visual field loss means that vision in some areas is not as sensitive as normal. at 57cm from your eye (arm length), 2cm of your visual field (…. At 100 km/h our horizontal visual field is only 40° (20° to the left and right of our line of sight). The binocular field extends the horizontal extent from 160 to 200 degrees, with the central 120 degrees over lapping and providing the potential for stereopsis. Normal visual field is: 60 degrees nasally, 100 degrees temporally, 75 degrees inferiorly and 60 degrees superiorly. Visual field is the part of environment that is visible to the steadily fixing eye. We identified it from obedient source. These objects lie outside your central field of vision, in what is called your peripheral vision. Partial Quadrantanopia may be considered if the individual demonstrates an adequate field of vision in the unaffected side and the affected side retains or regains 30 degrees temporally along the horizontal line while demonstrating 15 degrees above and below the horizontal line for the full 30 degrees. A test that shows visual field loss means that vision in some areas is not as sensitive as normal. Start with a simple Confrontational Visual Field Exam. You'll be asked to stare straight ahead while they slowly bring one of their hands from one side into your peripheral vision. 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. Normal tests have no "black" areas, which are locations where vision isn't normal. Moreover, the horizontal visual field should be at least 120 degrees; the extension should be at least 50 degrees left and right and 20 degrees up and down . 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normal horizontal field of vision degrees