Relationship Between Critical Flicker Frequency and Age in Flicker Perimetry

Meridional differences in temporal response characteristics

“…The results showed similar trends between horizontal and vertical retinal meridians; for stimulus sizes less than two degrees the C F F decreased rapidly with increasing eccentricity from a maximum at the fovea. The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). Skrandies (1985) used a Grass PS2 stimulator, emitting whitelight in a spike waveform between 450 and 650 nm to measure the CFF centrally and at 5 and 10 degrees eccentricity along the vertical and horizontal meridians.…”

Meridional differences in temporal response characteristics

“…The results showed similar trends between horizontal and vertical retinal meridians; for stimulus sizes less than two degrees the C F F decreased rapidly with increasing eccentricity from a maximum at the fovea. The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). Skrandies (1985) used a Grass PS2 stimulator, emitting whitelight in a spike waveform between 450 and 650 nm to measure the CFF centrally and at 5 and 10 degrees eccentricity along the vertical and horizontal meridians.…”

Meridional differences in temporal response characteristics

“…Those reporting a maximum CFF at the fovea (Creed and Ruch, 1932;Ross, 1936;Fukuda, 1979) and those reporting a maximum C F F at some extra-foveal locus (Phillips, 1933;Ridell, 1936;Hylkema, 1942;Miles, 1950;Haycock, 1954;Lovekin and Chandler, 1959;Campbell and Ritter, 1959;Hartmann, Lachenmayr and Brettell, 1979). The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). (1985) concluded that the outcome depends on the stimulus and background parameters, a statement supported by studies of rod cone interaction and their effects on temporal sensitivity (Frumkes et al, 1973;Goldberg, Frumker and Nygaard, 1983;Alexander and Fishman, 1984).…”

Depth Perception as a Function of Age

“…The level of dark adaptation exhibits a clearly noticeable alteration in individuals above 60 years (McFarland & Fisher, 1955). Responses to flicker in individuals age 60 and over show a decline in critical flicker frequencies at all points of the visual field (Wolf & Schraffa, 1964). The extent of the visual field as measured by dynamic perimetry decreased with age, showing an accelerated shrinkage above age 60 years (Wolf, 1967).…”

Meridional differences in temporal response characteristics

“…The results showed similar trends between horizontal and vertical retinal meridians; for stimulus sizes less than two degrees the C F F decreased rapidly with increasing eccentricity from a maximum at the fovea. The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). Skrandies (1985) used a Grass PS2 stimulator, emitting whitelight in a spike waveform between 450 and 650 nm to measure the CFF centrally and at 5 and 10 degrees eccentricity along the vertical and horizontal meridians.…”

Meridional differences in temporal response characteristics

“…Those reporting a maximum CFF at the fovea (Creed and Ruch, 1932;Ross, 1936;Fukuda, 1979) and those reporting a maximum C F F at some extra-foveal locus (Phillips, 1933;Ridell, 1936;Hylkema, 1942;Miles, 1950;Haycock, 1954;Lovekin and Chandler, 1959;Campbell and Ritter, 1959;Hartmann, Lachenmayr and Brettell, 1979). The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). (1985) concluded that the outcome depends on the stimulus and background parameters, a statement supported by studies of rod cone interaction and their effects on temporal sensitivity (Frumkes et al, 1973;Goldberg, Frumker and Nygaard, 1983;Alexander and Fishman, 1984).…”

Depth Perception as a Function of Age

“…The level of dark adaptation exhibits a clearly noticeable alteration in individuals above 60 years (McFarland & Fisher, 1955). Responses to flicker in individuals age 60 and over show a decline in critical flicker frequencies at all points of the visual field (Wolf & Schraffa, 1964). The extent of the visual field as measured by dynamic perimetry decreased with age, showing an accelerated shrinkage above age 60 years (Wolf, 1967).…”

Meridional differences in temporal response characteristics

“…The results showed similar trends between horizontal and vertical retinal meridians; for stimulus sizes less than two degrees the C F F decreased rapidly with increasing eccentricity from a maximum at the fovea. The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). Skrandies (1985) used a Grass PS2 stimulator, emitting whitelight in a spike waveform between 450 and 650 nm to measure the CFF centrally and at 5 and 10 degrees eccentricity along the vertical and horizontal meridians.…”

Meridional differences in temporal response characteristics

“…Those reporting a maximum CFF at the fovea (Creed and Ruch, 1932;Ross, 1936;Fukuda, 1979) and those reporting a maximum C F F at some extra-foveal locus (Phillips, 1933;Ridell, 1936;Hylkema, 1942;Miles, 1950;Haycock, 1954;Lovekin and Chandler, 1959;Campbell and Ritter, 1959;Hartmann, Lachenmayr and Brettell, 1979). The C F F also appeared to decrease more rapidly in the temporal than the nasal retina thus supporting the work of Wolf and Vincent (1963), Wolf and McGowan ( I963), and Wolf and Schraffa (1964). (1985) concluded that the outcome depends on the stimulus and background parameters, a statement supported by studies of rod cone interaction and their effects on temporal sensitivity (Frumkes et al, 1973;Goldberg, Frumker and Nygaard, 1983;Alexander and Fishman, 1984).…”

Depth Perception as a Function of Age

“…The level of dark adaptation exhibits a clearly noticeable alteration in individuals above 60 years (McFarland & Fisher, 1955). Responses to flicker in individuals age 60 and over show a decline in critical flicker frequencies at all points of the visual field (Wolf & Schraffa, 1964). The extent of the visual field as measured by dynamic perimetry decreased with age, showing an accelerated shrinkage above age 60 years (Wolf, 1967).…”