Research

And, now, Dr. EYEnstein’s home turf:  Research!

We have published and continue to research and work to publish in areas of binocularity.  Dr. Hussey has gone past 30 papers published, almost entirely in peer-reviewed journals.  PDFs of those papers are here for reading and downloading.  Always remember that the papers are aimed at a professional audience, so they may not be written in the most reader-friendly way. 

Also in this area are some videos either from our research with Eyetronix, or some videos Dr. Hussey made to explain problems with binocular vision in a more friendly video format.  In addition, one of the major instrument manufacturers asked Dr. Hussey to provide case studies using the hand-held retina photo device we use.  That was a nice diversion.

Dr. Hussey has consulted with or is consulting with Eyetronix, PinpointEyes (Hyperion Labs), and Luminopia, but is not a paid consultant.

Research Articles

A Flicker Therapy for the Treatment of Amblyopia

Standard clinical treatment methods for amblyopia penalize the non- amblyopic eye, with subsequent compliance problems, and do not address the associated binocular vision abnormality.

An Idealized Experiment on The Effect of Decreasing Magnocellular Signal on Visual Sensation

Idealized or “thought” experiments can be used to investigate theoretical principles. The present idealized experiment uses a neurological rheostat to decrease magnocellular signal in an otherwise visu- ally normal subject to probe for possible consequences of the magnocellular impairment that is often linked to reading problems (dyslexia).

Binocular Visual Sensation in Reading A Unified Theory

Current visual sensory theory focuses on the dual pathway nature of the visual sys- tem. Two pathways carry information from the eye to the brain, the parvocellular (detail and color) and magnocellular (motion) pathways. The magnocellular pathway has been implicated as a cause of dyslexia. Clinically, intermittent central suppression has been shown to be associated with reading problems.

Binocular Visual Sensation In Reading II: Implication of a Unified Theory

Both magnocellular pathway defects and intermittent central suppression show links to dyslexia. The prior paper suggested a theory of intermittent central suppression based on a magnocellular pathway defect. This paper expands on that theory and suggests some further implications particularly for reading, amblyopia and the need for further research.

Correcting Intermittent Central Suppression Improves Binocular Marksmanship

Do two eyes have any intrinsic advantage over one eye for combat marksmanship? Intuitively, having two eyes work together (binocularity) seems beneficial.

Development of Stereopsis Using Eyetronix Flicker GlassTM to Treat Amblyopia in Congenital Unilateral Post-Cataract-Surgery Aphake

Early or congenital cataract is typically treated with early surgery, commonly without pseudophakic implants. Surgery is o9en followed with patching and optical correction, including extended wear contact lenses. Some level of amblyopia is expected to persist depending on how early surgery is performed and what post- surgical therapies are accomplished.

Improved Compliance with a Novel Eyetronix Flicker Glass Therapy for the Treatment of Amblyopia

To evaluate compliance and quality of life with a novel technique for amblyopia treatment (Eyetronix Flicker Glass, EFG) in a group of children who had been previously and unsuccessfully treated by patching.

Increases in Binocularity Periods with Treatment of Intermittent Central Suppression Contradict Suppression as Solely Inhibitory

Intermittent central suppression (ICS), an intermittent loss of central visual sensation, has been associated with reading problems.

Initial Evaluation of the Eyetronix Flicker Glass

Amblyopia is a neurological development disorder that presents with deficits in spatiotemporal vision processing resulting from an active suppression process.

Intermittent Central Suppression caused by Cervical Trauma Whiplash

Whiplash cervical trauma has been shown to cause visual changes. Intermittent central suppression (ICS) has been shown to be associated with reading problems.

Intermittent Central Suppression Suffered After a Rough Landing on a Bicycle

Seth, a 16-year-old male student-athlete, suffered a concussion during trail riding in 2014 when his bike came apart during a jump. The patient’s occupational therapist referred him for a vision examination and therapy following vestibular therapy. Unresolved post-concussion symptoms included headaches, problems seeing the ball in sports, and reading problems reminiscent of “dyslexia.”

Intermittent Central Suppression: A missing link in reading problems?

Much work has been done searching for a link between vision problems and reading problems. Certainly, a strong case can be made that ocular motor malfunctions can affect reading efficiency.

Is Anti-Suppression the Quest for Visibility?

Vision science defines the fundamental action of the vision system to be the generation of visible percepts. Intermittent central suppression (ICS) is an intermittent, usually alternating, loss of visual sensation, a repetitive loss of that visual percept.

Job Corps Student Sees New Future

Imagine going to school for eleven years not being able to read;

My new iPhone 7

Problems with cell phone signals getting to my new iPhone 7 provide an analogy for one of the primary sensory defects vision therapy can deal with, suppression and intermittent central suppression in particular.