Contact lenses can cause the reverse Pulfrich effect and anti-Pulfrich monovision corrections can eliminate it

BioRxiv : the Preprint Server for Biology
Victor Rodriguez-LopezJohannes Burge


Interocular differences in image blur can cause dramatic misperceptions of the distance and three-dimensional direction of moving objects. This new illusion--the reverse Pulfrich effect--is caused by the optical conditions induced by monovision, a common correction for presbyopia. Fortunately, anti-Pulfrich monovision corrections, in which the blurring lens is slightly darkened, can eliminate the illusion for a wide range of viewing conditions. However, the reverse Pulfrich effect and the efficacy of anti-Pulfrich corrections have previously been demonstrated only with trial lenses. This situation should be addressed, for both clinical and scientific reasons. First, monovision is most commonly prescribed with contact lenses. It is important to replicate these effects in the most common monovision delivery system. Second, trial lenses of different powers, unlike contacts, cause large magnification differences between the eyes. To confidently attribute the reverse Pulfrich effect to differences in optical blur between the eyes, and to ensure that the reported effect sizes are reliable, one must control for magnification. Here, in a within observer study with five separate experiments, we demonstrate i) that contact lenses induce ...Continue Reading

Related Concepts

Drug Response
Pharmacologic Substance
Tumor Cells, Malignant
Clinical Trials
High-Throughput RNA Sequencing

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.

Related Papers

BioRxiv : the Preprint Server for Biology
Johannes BurgeCarlos Dorronsoro
The British Journal of Physiological Optics
G S Wilson
Scandinavian Journal of Psychology
S Krekling
Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde
Journal of the Optical Society of America
© 2020 Meta ULC. All rights reserved