Suppression Behavior Analyzed as a Function of Monovision Addition Power
| Autor: | Catherine Hines, David A. Heath, Faye Schwartz |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Adult
Optics and Photonics Visual acuity genetic structures Central suppression Visual Acuity Binocular function Functional Laterality Optics medicine Humans Physics Monocular business.industry Distance Perception Presbyopia Function (mathematics) medicine.disease Power (physics) Stereoscopic acuity Ophthalmology Eyeglasses medicine.symptom business Optometry |
| Zdroj: | Optometry and Vision Science. 63:198-201 |
| ISSN: | 1040-5488 |
| Popis: | Monovision, the use of a monocular addition for near viewing, is a clinical technique sometimes used to correct presbyopia. This technique attempts to maintain binocular function while requiring a degree of central suppression. We examined suppression behavior in spectacle monovision as a function of addition power. Suppression behavior was determined by measuring the length and frequency of periods of suppression for a range of monocular addition powers. Testing was conducted at viewing distances of 6 m and 40 cm. The most striking result is the existence of a near/distance differential: the monocular addition power required to stabilize suppression at near is greater than at distance. It was also found that suppression behavior may be stable even in the presence of a relatively high level of stereoscopic acuity. The relation between the contradictory needs for suppression and binocular functioning under monovision conditions is discussed. |
| Databáze: | OpenAIRE |
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