Properties of high-pass resolution perimetry targets
| Autor: | F. Nikolajeff, Lars Frisén |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Physics Fourier Analysis business.industry media_common.quotation_subject Resolution (electron density) Visual Acuity General Medicine Middle Aged Ophthalmology Optics Sensory Thresholds Humans Visual Field Tests High-pass resolution perimetry Contrast (vision) Female Visual Fields business media_common |
| Zdroj: | Acta Ophthalmologica. 71:320-326 |
| ISSN: | 1755-375X |
| Popis: | Relationships between high-pass resolution perimetry ring targets and conventional perimetry and acuity targets were explored by optical analytical techniques and by comparative measurements in normal humans. High-pass resolution and acuity targets produced closely proportional resolution measurements, showing that the critical ring detail is the width of the bright core. High-pass resolution and conventional perimetry thresholds were not equally well correlated. From a purely optical point of view, high-pass resolution targets appeared to lose somewhat more contrast on defocusing. On the other hand, high-pass resolution appears to show less variability in practical, clinical use. |
| Databáze: | OpenAIRE |
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