scholarly journals Driving with Homonymous Visual Field Defects: Driving Performance and Compensatory Gaze Movements

2015 ◽  
Vol 8 (5) ◽  
Author(s):  
Thomas C. Kübler ◽  
Enkelejda Kasneci ◽  
Wolfgang Rosenstiel ◽  
Kathrin Aehling ◽  
Martin Heister ◽  
...  
Keyword(s):  
Visual Field ◽  
Safety Margin ◽  
Driving Performance ◽  
Head Movements ◽  
Visual Field Defects ◽  
Control Group ◽  
Safe Driving ◽  
Lane Position ◽  
Control Group Subject ◽  
Field Defects

Aim of this pilot study was to assess the driving performance and its relationship to the visual search behavior, i.e., eye and head movements, of patients with homonymous visual field defects (HVFDs) in comparison to healthy-sighted subjects during a simulated driving test. Eight HVFD patients and six healthy-sighted age- and gender-matched control subjects underwent a 40-minute driving test with nine hazardous situations. Eye and head movements were recorded during the drive. Four out of eight patients passed the driving test and showed a driving performance similar to that of the control group. One control group subject failed the test. Patients who passed the test showed an increased number of head and eye movements. Patients who failed the test showed a rightwards-bias in average lane position, probably in an attempt to maximize the safety margin to oncoming traffic. Our study supports the hypothesis that a considerable subgroup of subjects with HVFDs show a safe driving behavior, because they adapt their viewing behavior by increased visual scanning.

scholarly journals Comparison between the Correlations of Retinal Nerve Fiber Layer Thickness Measured by Spectral Domain Optical Coherence Tomography and Visual Field Defects in Standard Automated White-on-White Perimetry versus Pulsar Perimetry

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Maged Alnawaiseh ◽  
Lisann Hömberg ◽  
Nicole Eter ◽  
Verena Prokosch
Keyword(s):  
Visual Field ◽  
Structure Function ◽  
Nerve Fiber ◽  
Visual Field Defects ◽  
Control Group ◽  
Fiber Layer ◽  
Nerve Fiber Layer Thickness ◽  
Significant Difference ◽  
Field Defects ◽  
Glaucoma Group

Purpose.To compare the structure-function relationships between retinal nerve fiber layer thickness (RNFLT) and visual field defects measured either by standard automated perimetry (SAP) or by Pulsar perimetry (PP).Materials and Methods.263 eyes of 143 patients were prospectively included. Depending on the RNFLT, patients were assigned to the glaucoma group (group A: RNFL score 3–6) or the control group (group B: RNFL score 0–2). Structure-function relationships between RNFLT and mean sensitivity (MS) measured by SAP and PP were analyzed.Results.Throughout the entire group, the MS assessed by PP and SAP correlated significantly with RNFLT in all sectors. In the glaucoma group, there was no significant difference between the correlations RNFL-SAP and RNFL-PP, whereas a significant difference was found in the control group.Conclusions.In the control group, the correlation between structure and function based on the PP data was significantly stronger than that based on SAP.

scholarly journals Efficacy and Feasibility of Home-Based Training for Individuals With Homonymous Visual Field Defects

2013 ◽  
Vol 28 (3) ◽  
pp. 207-218 ◽  
Author(s):  
Lina Aimola ◽  
Alison R. Lane ◽  
Daniel T. Smith ◽  
Georg Kerkhoff ◽  
Gary A. Ford ◽  
...  
Keyword(s):  
Visual Field ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Intervention Group ◽  
Computer Training ◽  
Visual Field Defects ◽  
Control Group ◽  
Home Based ◽  
Response Task ◽  
Field Defects

Background. Homonymous visual field defects (HVFDs) are one of the most common consequences of stroke. Compensatory training encourages affected individuals to develop more efficient eye movements to improve function. However, training is typically supervised, which can be time consuming and costly. Objective. To develop and evaluate the efficacy and feasibility of an unsupervised reading and exploration computer training for individuals with HVFDs. Methods. Seventy individuals with chronic HVFDs were randomly assigned to 1 of 2 groups: intervention or control. The former received 35 hours of reading and exploration training, and the latter received 35 hours of control training. Visual and attentional abilities were assessed before and after training using perimetry, visual search, reading, activities of daily living, the Test of Everyday Attention, and a Sustained Attention to Response task. Results. Eighteen individuals failed to complete the training; analyses were conducted on the remaining 28 intervention and 24 control group participants. Individuals in the intervention group demonstrated significant improvements in the primary outcomes of exploration (12.87%, 95% confidence interval [CI] = 8.44% to 17.30%) and reading (18.45%, 95% CI = 9.93% to 26.97%), which were significantly greater than those observed following the control intervention (exploration = 4.80%, 95% CI = 0.09% to 9.51%; reading = 1.95%, 95% CI = −4.78% to 8.68%). Participants in the intervention group also reported secondary subjective improvements, although these were not matched by objective gains in tasks simulating activities of daily living. Conclusions. Home-based compensatory training is an inexpensive accessible rehabilitation option for individuals with HVFDs, which can result in objective benefits in searching and reading, as well as improving quality of life.

Comparison of Different Nutritional and Lifestyle Factors between Glaucoma Patients and an Age-Matched Normal Population

2021 ◽  
Author(s):  
Sören Waibel ◽  
Gregor Thomaschewski ◽  
Robert Herber ◽  
Lutz E. Pillunat ◽  
Karin R. Pillunat
Keyword(s):  
Physical Activity ◽  
Visual Field ◽  
Protein Intake ◽  
Lifestyle Factors ◽  
High Protein ◽  
Visual Field Defects ◽  
Control Group ◽  
High Protein Intake ◽  
Field Defects ◽  
Glaucoma Group

Abstract Purpose To compare nutritional and lifestyle factors between glaucoma patients and an age-matched control group. Methods One hundred and ninety (190) glaucoma patients were enrolled in this study. The control group comprised 97 age-matched participants. Data on physical activity, nicotine smoking, and several nutritional habits like coffee and alcohol consumption as well as high-salt and high-protein intake were collected using a standardised questionnaire. Results Age and gender were not statistically significantly different between the groups. There was a tendency for higher physical activity in the glaucoma group in comparison to the control group (47.3 vs. 35.4%; p = 0.056). Statistically significantly more glaucoma patients were nonsmokers (n = 169; 89.4%) compared to the control group (n = 64; 66.7%; p = 0.001). Glaucoma patients were also more often teetotal compared to the control group (21.6% compared to 14.4%; p < 0.001). Similarly, more glaucoma patients drank larger amounts of coffee in comparison to the control group (p = 0.001). One hundred and seventy-six (96.7%) glaucoma patients and 88 (90.7%) control subjects had high-protein intake (p = 0.035). High-salt intake was significantly lower in the glaucoma group (69.3 vs. 73.2%; p = 0.018). Of the 190 glaucoma patients, 81 had early visual field impairments (MD > − 6 dB) and 109 patients had moderate (MD between − 6 dB and − 12 dB) to severe (MD < − 12 dB) visual field defects. The severity of visual field defects, whether early, moderate, or severe, had no statistically significant impact on lifestyle parameters. Conclusion Contrary to our original hypothesis that glaucoma patients would tend to follow an unhealthier lifestyle than the control group, the opposite was seen. Presumably, the cause of this healthier lifestyle is the desire to contribute positively through the course of the disease.

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