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Outcomes include within normal limits, outside normal limits, borderline, general reduction of sensitivity, and abnormally high sensitivity. VFI reports the patients visual field status as a percent of normal population age-matched visual field. MD is the average of all the deviations across the entire field compared to normative age-
The normal field of vision extends to approximately 60° nasally, 90° temporally, 60° superiorly and 70° inferiorly. 3. The blind spot indicates the location of the optic nerve head—an area with no photoreceptors in the temporal part of. —.
In normal individuals, the superior field extends 55° to 60° from fixation, the nasal field extends 60° to 65° from fixation, the inferior field extends 70° to 75° from fixation, and the temporal field extends 90° to 95° from fixation. A template that’s more representative of reality is shown below:
The dB (decibel) numbers are a measure of the patient’s ability to see dim stimuli. Range from 0 to 50. 30 is fairly normal 0-20 indicates low sensitivity and significant field loss. >40 indicates “hypersensitivity” and that the patient may be “trigger happy”—usually indicating an unreliable test.
SAMPLE CASE 1: 39-year-old patient with normal visual fi eld. SAMPLE CASE 2: 78-year-old patient with probable glaucomatous fi eld, showing indications of a cataract, and an arcuate scotoma.
Comprehensive Adult Eye and Vision Examination. GOALS OF THE COMPREHENSIVE ADULT EYE AND VISION EXAMINATION. Evaluate the functional status of the eyes and visual system. Assess ocular health and related systemic health conditions. Establish a diagnosis and formulate a treatment and management plan.
The ability to map the depth, extent and change of visual field defects should be considered in clinical management decisions. Some common types of visual field defects and their more common differentials are outlined below.
