Turpin Andrew

A Comparison between the Compass Fundus Perimeter and the Humphrey Field Analyzer.

Relative diagnostic precision of the 2 devices is equivalent. Test-retest variability of MS for CMP was better than for HFA.

Improving Spatial Resolution and Test Times of Visual Field Testing Using ARREST.

Spending time trying to accurately measure visual field locations that have high variability is not productive.

Orientation of the Temporal Nerve Fiber Raphe in Healthy and in Glaucomatous Eyes.

There is substantial natural variation in temporal nerve fiber raphe orientation, which cannot be predicted from age, axial length, relative geometry of the disc and fovea, or the contralateral eye.

The Proportion of Individuals Likely to Benefit from Customized Optic Nerve Head Structure-Function Mapping.

Anatomically customized mapping shifts the map markedly in approximately 12% of the general population in the nasal step region, where visual field locations can map to the opposite pole of the ONH than conventionally considered.

Geometry of the Retinal Nerve Fibers From Emmetropia Through to High Myopia at Both the Temporal Raphe and Optic Nerve.

High density OCT scans enabled visualization of marked interindividual variation in temporal raphe geometry; however, these variations were not well predicted by degree of myopia as represented by axial length.

Increasing the Spatial Resolution of Visual Field Tests Without Increasing Test Duration: An Evaluation of ARREST.

This study provides empirical evidence to support conclusions from previous computer simulations that ARREST can be used to increase spatial sampling in regions of interest without increasing test time.

Effects of Criterion Bias on Perimetric Sensitivity and Response Variability in Glaucoma.

Perimetric sensitivity estimates are demonstrably altered by observer response criterion but the effect varies widely and unpredictably, even within a single test.

Improving Personalized Structure to Function Mapping From Optic Nerve Head to Visual Field.

Anatomic parameters required for individualized structure-function mapping are readily measured with OCT and can provide improved concordance for some eyes.

Sampling the Visual Field Based on Individual Retinal Nerve Fiber Layer Thickness Profile.

Using structural information to choose locations to test in a VF for individual patients identifies more abnormal locations than using existing grid patterns and uniform sampling based on structure.

Temporal Wedge Defects in Glaucoma: Structure/Function Correlation With Threshold Automated Perimetry of the Full Visual Field.

About half of our glaucoma cohort have defects in the far peripheral inferotemporal visual field that correlate well with related damage to the superior nasal optic disc.

Validation of the Iowa Head-Mounted Open-Source Perimeter.

The Iowa Virtual Reality HMD Open-Source Perimeter is as repeatable as the Octopus 900 perimeter and is a more portable and less expensive alternative than traditional perimeters.

Recurrent Optic Disc Hemorrhage and Its Association with Visual Field Deterioration in Glaucoma.

High-frequency ODH within optic disc sectors, equivalent to detecting ODH in 45% of 3 monthly eye examination visits, was associated with significantly worse VF progression than sectors with moderate or only 1 observed ODH.

Patients' Views of Visual Field Testing and Priorities for Research Development and Translation into Practice.

Our study confirms, in a different population and health care system, previous research reporting patient perspectives on visual field assessment.

Do Additional Testing Locations Improve the Detection of Macular Perimetric Defects in Glaucoma?

Visual field examinations with additional macular locations can improve the detection of macular defects in GON modestly without loss of specificity when appropriate criteria are selected.

Suprathreshold Approaches to Mapping the Visual Field in Advanced Glaucoma.

STAMP accurately and repeatably maps the spatial extent of advanced visual field defects in as few as 50% of conventional perimetric test presentations.

Visual Field Progression in Glaucoma: Comparison Between PoPLR and ANSWERS.

Despite being simpler and less computationally demanding, PoPLR was at least as sensitive to deterioration as ANSWERS once the specificities were equated.

Increased Depth, Reduced Extent, and Sharpened Edges of Visual Field Defects Measured by Compass Fundus Perimeter Compared to Humphrey Field Analyzer.

Glaucomatous visual fields measured by CMP displayed characteristics consistent with expected effects of using real-time eye movement compensation technology compared to the widely used HFA.

A Method for Reducing the Number of Presentations in Perimetric Test Procedures.

ARBON can be added to a perimetry test procedure to speed up the test while largely preserving the distribution of returned sensitivities, thus producing normative data similar to the data for the original, underlying perimetric…

Do Intense Perimetric Stimuli Saturate the Healthy Visual System?

Observers can reliably discriminate between two different, but both very intense, perimetric stimuli, indicating that responses of the human visual system are not saturated by such stimuli.

A Depth-Dependent Integrated VF Simulation for Analysis and Visualization of Glaucomatous VF Defects.

Our DD-IVF program revealed binocular functional visual defects associated with glaucomatous archetypes of the 24-2 pattern and is designed to do the same for empirically measured VFs.

Threshold Automated Perimetry of the Full Visual Field in Patients With Glaucoma With Mild Visual Loss.

Patients with glaucoma demonstrate a systematic decrease in sensitivity with eccentricity across the full visual field. Goldmann size V stimuli better detected visual loss in patients with glaucoma with mild loss than size III.

A Structure-Function Dataset With Known Rates of Glaucomatous Progression.

This open dataset contains longitudinal, linked structural and functional data with known progression rates.

Association between Vision-Related Difficulties in Low Light Levels and Visual Fields in Glaucoma.

Self-reported difficulties at low light levels were partially explained by binocularly IVF status in people with glaucoma.

Personalizing the Transition From 24-2 to 10-2 Visual Field Testing Using ARREST - A Simulation Study.

The A10 approach allows automated incorporation of 10-2 locations into the 24-2 pattern that are customized to individuals without increasing test times.

Developing a Screening Tool for Areas of Abnormal Central Vision Using Visual Stimuli With Natural Scene Statistics.

Our prototype test demonstrated effective and efficient screening of abnormal areas in central vision.

Author Response: Effect of Depth-Dependent Integrated Visual Field on Vision-Related Quality of Life in Glaucoma.

Individual Differences in Foveal Shape: Feasibility of Individual Maps Between Structure and Function Within the Macular Region.

In our study, we demonstrated that the foveal shape is different for different subjects, but predictable superiorly and inferiorly within an individual.

Development of Visual Field Screening Procedures: A Case Study of the Octopus Perimeter.

Our method gives a principled approach to choosing between the many parameters of a visual field screening procedure.

Incorporating Spatial Models in Visual Field Test Procedures.

SWeLZ has the potential to reduce VF test times in people with normal VFs, without detriment to output precision and accuracy in glaucomatous VFs.

Customizing Structure-Function Displacements in the Macula for Individual Differences.

Individualizing macular displacement measurements based on OCT data for an individual can result in large spatial shifts in the retinal area corresponding to 10-2 locations, which may be important for clinical structure-function analysis when performed…

Choosing two points to add to the 24-2 pattern to better describe macular visual field damage due to glaucoma.

Adding a pair of locations to the superior macular region of the Humphrey Visual Field 24-2 pattern increases the number of abnormal locations identified in individuals with glaucoma.

Enhancing Structure-Function Correlations in Glaucoma with Customized Spatial Mapping.

Using more precise visual field and OCT measurements did not improve structure-function correlation in our cohort, but customizing the ONH sector and its associated visual field points substantially improved correlation.