Reclaiming the Periphery: Automated Kinetic Perimetry for Measuring Peripheral Visual Fields in Patients With Glaucoma

Mönter, Vera M.; Crabb, David P.; Artes, Paul H.

doi:10.1167/iovs.16-19868

Cited by 22 publications

(16 citation statements)

References 60 publications

(51 reference statements)

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“… 1 , 34 , 35 However, a more recent study using automated kinetic perimetry of the peripheral field has detected strikingly different defects in peripheral visual fields of patients with a similar defect in their central visual field. 36 …”

Section: Discussionmentioning

confidence: 99%

Age-related changes in the peripheral retinal nerve fiber layer thickness

Hondur

Göktaş

Al-Aswad

et al. 2018

OPTH

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PurposeThis pilot cross-sectional study aimed to determine age-related changes of the retinal nerve fiber layer (RNFL) thickness in retinal periphery by swept-source optical coherence tomography-based analysis.MethodsForty eyes of 40 healthy subjects were studied in three age groups, group 1 (20–40 years, n=15), group 2 (41–60 years, n=14), and group 3 (≥61 years, n=11). Wide-angle swept-source optical coherence tomography scans, including the optic disc and macula, were montaged with the nasal peripheral optical coherence tomography images acquired with a contralateral gaze. The peripapillary and peripheral RNFL thickness values were obtained for nasal and temporal sides. The ratio of peripheral-to-peripapillary RNFL thickness was also calculated for these sectors.ResultsWe detected a significantly thinner RNFL in older than younger subjects at a distance of 6 mm from the optic disc on nasal and temporal sides (P<0.001). An age-related reduction in peripheral-to-peripapillary RNFL thickness ratios (P<0.001 and P<0.02 for nasal and temporal sides, respectively) was also detected.ConclusionThe age-related decline should be taken into consideration when determining the glaucoma-related alterations in peripheral RNFL thickness. Continued analysis in patients with ocular hypertension and glaucoma should help determine whether RNFL in the periphery with lower nerve tissue reserve might be more susceptible to injury, whether injury to the peripheral RNFL might be easier to detect, and/or whether analysis of the peripheral RNFL thickness could improve clinical diagnosis and follow-up of glaucoma.

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Section: Discussionmentioning

confidence: 99%

Age-related changes in the peripheral retinal nerve fiber layer thickness

Hondur

Göktaş

Al-Aswad

et al. 2018

OPTH

View full text Add to dashboard Cite

show abstract

“…Since the task would be easy to grasp for untrained patients, a protocol of the present kind might be of clinical use-in monitoring changes of the visual field with age or in progressive conditions such as glaucoma [23] or in assessing the effects of prophylactic cryotherapy to prevent retinal detachments that originate from giant retinal tears in type 1 Stickler syndrome [35,36].…”

Section: Discussionmentioning

confidence: 99%

‘The last channel’: vision at the temporal margin of the field

et al. 2020

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The human visual field, on the temporal side, extends to at least 90° from the line of sight. Using a two-alternative forced-choice procedure in which observers are asked to report the direction of motion of a Gabor patch, and taking precautions to exclude unconscious eye movements in the direction of the stimulus, we show that the limiting eccentricity of image-forming vision can be established with precision. There are large, but reliable, individual differences in the limiting eccentricity. The limiting eccentricity exhibits a dependence on log contrast; but it is not reduced when the modulation visible to the rods is attenuated, a result compatible with the histological evidence that the outermost part of the retina exhibits a high density of cones. Our working hypothesis is that only one type of neural channel is present in the far periphery of the retina, a channel that responds to temporally modulated stimuli of low spatial frequency and that is directionally selective.

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“…This is possibly due to the VF impairment caused by PH10 or PH15 in our study being more severe than that of advanced glaucoma in the previous study [ 2 ]. Glaucoma patients with central visual disturbance do not necessarily exhibit peripheral VF loss [ 21 ]. In the study by Kunimatsu-Sanuki et al, the incidence of collisions with a mobility scooter approaching from the right was significantly higher for patients with advanced glaucoma than for normal control subjects (advanced glaucoma: 22.2%, normal control: 0%, P = 0.0051) [ 2 ].…”

Section: Discussionmentioning

confidence: 99%

The effect of concentric constriction of the visual field to 10 and 15 degrees on simulated motor vehicle accidents

et al. 2018

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PurposeTraffic accidents are associated with the visual function of drivers, as well as many other factors. Driving simulator systems have the advantage of controlling for traffic- and automobile-related conditions, and using pinhole glasses can control the degree of concentric concentration of the visual field. We evaluated the effect of concentric constriction of the visual field on automobile driving, using driving simulator tests.MethodsSubjects meeting criteria for normal eyesight were included in the study. Pinhole glasses with variable aperture sizes were adjusted to mimic the conditions of concentric visual field constrictions of 10° and 15°, using a CLOCK CHART®. The test contained 8 scenarios (2 oncoming right-turning cars and 6 jump-out events from the side).ResultsEighty-eight subjects were included in the study; 37 (mean age = 52.9±15.8 years) subjects were assigned to the 15° group, and 51 (mean = 48.6±15.5 years) were assigned to the 10° group. For all 8 scenarios, the number of accidents was significantly higher among pinhole wearing subjects. The average number of all types of accidents per person was significantly higher in the pinhole 10° group (4.59±1.81) than the pinhole 15° group (3.68±1.49) (P = 0.032). The number of accidents associated with jump-out scenarios, in which a vehicle approaches from the side on a straight road with a good view, was significantly higher in the pinhole 10° group than in the pinhole 15° group.ConclusionsConcentric constriction of the visual field was associated with increased number of traffic accidents. The simulation findings indicated that a visual field of 10° to 15° may be important for avoiding collisions in places where there is a straight road with a good view.

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Reclaiming the Periphery: Automated Kinetic Perimetry for Measuring Peripheral Visual Fields in Patients With Glaucoma

Cited by 22 publications

References 60 publications

Age-related changes in the peripheral retinal nerve fiber layer thickness

Age-related changes in the peripheral retinal nerve fiber layer thickness

‘The last channel’: vision at the temporal margin of the field

The effect of concentric constriction of the visual field to 10 and 15 degrees on simulated motor vehicle accidents

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