OVS Announces - November 2015

Coming in the November 2015 Optometry & Vision Science

Here are brief highlights.
The online and printed copy will be available early-November.
E-Publication Ahead-of-Print now available for all these articles at

Anthony J. Adams, OD, PhD, FAAO


Glaucoma Patients Successfully Adapt Their Driving Behavior

The driving performance and eye movement visual search behavior of binocular visual field deficit glaucoma patients was tested in a 40 minute simulated driving test that included hazardous city and rural situations. Half the glaucoma patients increased both head and eye movements and adapted well enough to pass the German driving test.

Novel Interferometer Customizes High Order Aberrations in PALs

Our authors provide principles, design and performance of a modified point diffraction interferometer (PDI) for evaluating the local higher order aberrations of progressive addition lenses (PALs). They suggest their device allows customized solutions for improving an individual's vision.

Multiple Zones For Center-Near Contact Lenses

Our authors found between 8 and 10 concentric zones on Center-Near contact lenses are needed to balance acceptable quality of distance, intermediate and near vision. Only 2-5 zones are needed if intermediate vision is unnecessary.

Silicone Hydrogel Daily Disposable Contact Lenses Compared

Narafilcon A, filcon II-3, and delefilcon A daily-disposable silicone-hydrogel contact lenses were studied at 8, 12 and 16 hours of wear in a cross-over design. Differences in tear break-up time over the contact lens surface were associated with corneal staining.

Publication Rates for Academy Presentations

Presentations at the 2006 Academy meeting were published at a higher rate (approximately 2X) for podium presentations than posters, with close to an overall publication rate of 20% in the 7 years following the meeting. About one third of them were published in OVS.

Myopic Shift with Hyperbaric Oxygen is Lens-Based 

Our authors have found about 0.6D transient myopic shifts during hyperbaric oxygen therapy of radiation-induced osteonecrosis, proctitis or cystitis They discovered that lens index changes--not lens curvature change- produced the myopic shift.

Calculation of Retinal Vessel Caliber

Vessel caliber is linked to systemic health, but the number of vessels included in the analysis can confound the retinal arterio-venous ratio. The authors conclude that equal numbers of arteries and veins does not alter the measurement using two different formulae.

Blurry Vision Decreases Accommodative Gain

It is unknown how the magnitude of accommodative lag is related to perceived image clarity.  In 139 participants ages 5 to 35, as the accommodative lag increased with accommodative demand, the gain of accommodation remained stable while the stimulus was perceived as clear. But then decreased significantly once the stimulus was perceived as blurry.

Aging and Demographics Related to Head-Eye Coordination

Head movements in the elderly may contribute to their dizziness and equilibrium problems. In trying to clarify the role of head movements in head-eye coordination, the authors found both eye and head movers and another group of primarily eye movers. Both groups varied with increasing age and national domicile, but not gender.

US Immigrants Utilization of Optometric Services

While it is known that US immigrants have poorer vision outcomes than US natives, our authors raise the question of whether this might be a result of poorer utilization of optometric services.

Bedside to Bench Impact: Outdoor light Exposure and Myopia

Commonly, translational research is thought to be “bench to bedside.” Contrary to this perspective long-time myopia researchers Zadnik and Mutti use the recent ascendance of time spent outdoors as a risk factor for future juvenile-onset myopia to illustrate how patient-oriented findings can translate to clinical care.

Explaining Mis- and Under-Diagnosis of Fuch's Uveitis Syndrome

Fuchs uveitis syndrome is a commonly under- and mis-diagnosed condition in clinical practice with long-term consequences (e.g. cataracts and glaucoma).  Our authors review atypical features of the condition with 3 Clinical Cases providing insight into clinical mis- and under-diagnosis and challenge traditional management concepts.

Diagnostic Dilemma in Branch Vein Occlusion

While retinal vascular occlusions are typically associated with well-defined risk factors in the elderly, our authors clinical case with a young man illustrates how systemic issues can cloud the differential diagnosis.

Post-LASIK Keratoectasia Management with Soft Contact Lenses

Contact lens management of post-LASIK keratoectasia is challenging, particularly if limited to gas permeable lens solutions. The author used KeraSoft IC)to meet a patient's vision and comfort needs for sports.

Posterior Corneal Elevation Revealed

In three clinical cases, the authors used a rotating Scheimpflug camera, combined with a Placido disc system, to illustrate that posterior polymorphous corneal dystrophy (PPCD) can cause a posterior corneal elevation, which necessitates corneal tomographic evaluation.