OVS Announces - March 2016


Coming in the March 2016 Optometry & Vision Science

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

Anthony J. Adams, OD, PhD, FAAO
Associate Editor


Global Visual Impairment From Uncorrected Refractive Error


A systematic review of about 15,000 manuscripts from 1990-2010 yielded 210 high-quality population-based cross-sectional studies which informed a meta-analysis of trends by region. Uncorrected refractive error continued is the leading cause of vision impairment and the second leading cause of blindness worldwide, affecting 108 million people.

Spectacle Choices in South Africa

This study looked at perceptions and key decision making factors in the purchase of spectacles and compared this across different social settings.

Refractive Error in Durban Area of South Africa

Few population-based studies of refractive error have been conducted in South Africa. This study found the prevalence of refractive error (greater than 0.5D) in adults (35 years or older) in the INK area of KwaZulu-Natal, South Africa being 11.4%, 37.7%, 25.7%, for myopia, hyperopia and astigmatism, respectively.

Vision of Indigenous Australian Children

Indigenous children have less refractive error and strabismus than their non-Indigenous peers. However, convergence insufficiency and reduced visual motor integration were more prevalent. The implications for vision screening of binocular motor aspects are important.

Comparison of Two Optical Biometers for IOL Power Calculations

The authors find that a new Biometer (Galilei G6) provides highly repeatable lens IOL calculations but the measures were not interchangeable with the more established optical biometer (Lenstar LS 900) measures.

Complications of Cataract Surgery in Iran

The authors determine the prevalence and types of intraoperative complications of cataract surgery and examine potential risk factors throughout the Province of Tehran as part of the 2011 Iranian Cataract Surgery Survey.  While they reported what they considered to be a relatively high prevalence of intraoperative complications (4.15%); it had decreased from the 2006 to 2010 period.

Retest Variability for Medmont M700 Automated Perimeter

Our authors provide test retest variability data in 24 glaucoma patients using the Medmont M700 perimeter, which has a different stimulus array from other automated perimeters. They find with the M700 pattern defect indices, but not overall defect indices, correlate well with the degree of field loss.

Moderate Exercise Briefly Lowers IOP

Our authors find a significant IOP lowering that persists for 10 minutes after 30 minutes of exercise in healthy young adults. The IOP reduction was greater the higher the initial IOP, raising study questions about suspect IOP populations.

New Software for RGP Keratoconus Lenses

Our authors proposed an improved software program for reliably assessing the back optic zone radius in rigid gas permeable scleral lenses for keratoconus, and arriving at the final lens.

Resolving Controversy With Scleral Contact Lens Hypoxia

Our authors find modern high Dk miniscleral contact lenses do not induce clinically significant corneal edema following 8 hours of lens wear in young healthy eyes. Only a low level of corneal edema was observed (1.70%) and posterior corneal topography remained stable.

Judging Corneo-Scleral Lens Clearance

Do neophytes have trouble making the difficult judgement of corneo-scleral lens clearance? Our authors find 34 student interns in the final semester of their fourth year of optometric training tend to significantly overestimate the amount of central corneal clearance in a normal subject wearing corneo-scleral lenses in both eyes.

Treating Influenza Creates a Rare Myopic Shift

Influenza viruses circulate worldwide every year. Anti-influenza medication such as Relenza and Tamiflu, both neuraminidase inhibitors, are used commonly and effectively. The authors report an extremely rare and temporary acute myopia shift associated with Relenza treatment.

Presentation of Bilateral Vitreomacular Traction

Spectral-Domain Optical Coherence Tomography has provided new insight into vitreomacular traction by allowing better visualization of the vitreo-retinal interface. In their 8 cases, our authors highlight the variability in presentation, symptomatology, and clinical outcome between and within eyes of patients with bilateral vitreomacular traction.