A site to transform Pubmed publications into these bibliographic reference formats: ADS, BibTeX, EndNote, ISI used by the Web of Knowledge, RIS, MEDLINE, Microsoft's Word 2007 XML.

Konrad Pesudovs - Top 30 Publications

Diabetic Retinopathy and Macular Edema Quality-of-Life Item Banks: Development and Initial Evaluation Using Computerized Adaptive Testing.

The purpose of this study was to assess the psychometric properties of diabetic retinopathy (DR) and diabetic macular edema (DME) quality-of-life (QoL) item banks and determine the utility of the final calibrated item banks by simulating a computerized adaptive testing (CAT) application.

Intensive Blood-Pressure Treatment and Patient-Reported Outcomes.

Patient-reported Outcomes for Assessment of Quality of Life in Refractive Error: A Systematic Review.

This review has identified the best existing patient-reported outcome (PRO) instruments in refractive error. The article highlights the limitations of the existing instruments and discusses the way forward.

Visual and refractive associations with falls after first-eye cataract surgery.

To clarify the effect of first-eye cataract surgery on the incidence of falls and identify components of visual function associated with fall risk.

Global causes of blindness and distance vision impairment 1990-2020: a systematic review and meta-analysis.

Contemporary data for causes of vision impairment and blindness form an important basis of recommendations in public health policies. Refreshment of the Global Vision Database with recently published data sources permitted modelling of cause of vision loss data from 1990 to 2015, further disaggregation by cause, and forecasts to 2020.

Uncorrected and corrected refractive error experiences of Nepalese adults: a qualitative study.

The aim of this study was to explore the impact of corrected and uncorrected refractive error (URE) on Nepalese people's quality of life (QoL), and to compare the QoL status between refractive error subgroups.

Inter-relationship between visual symptoms, activity limitation and psychological functioning in patients with diabetic retinopathy.

We explored the direct and indirect impact of restrictions in daily living activities on the relationship between perceived visual symptoms associated with diabetic retinopathy (DR) and psychological functioning.

Magnitude, temporal trends, and projections of the global prevalence of blindness and distance and near vision impairment: a systematic review and meta-analysis.

Global and regional prevalence estimates for blindness and vision impairment are important for the development of public health policies. We aimed to provide global estimates, trends, and projections of global blindness and vision impairment.

Patient-reported outcome measures in amblyopia and strabismus: a systematic review.

Many patient-reported outcome measures (PROMs) have been developed and/or used to measure the impact of amblyopia and strabismus on quality of life (QoL). Identifying the one with superior quality is important for evaluating the effectiveness of novel therapy for amblyopia and for directing improved clinical decision-making in adults considering strabismic surgery. Therefore, the aim of this review is to identify all PROMs previously developed/used to study the impact of amblyopia and/or strabismus on QoL and to appraise the quality and comprehensiveness of content of the disease-specific instruments.

Questionnaires for Measuring Refractive Surgery Outcomes.

To identify the questionnaires used to assess refractive surgery outcomes, assess the available questionnaires in regard to their psychometric properties, validity, and reliability, and evaluate the performance of the available questionnaires in measuring refractive surgery outcomes.

Impact of refractive error on quality of life: a qualitative study.

This study qualitatively explores the impact of refractive error on adults, particularly after correction.

Re: Pinto-Fraga et al.: Topical fluorometholone protects the ocular surface of dry eye patients from desiccating stress: a randomized controlled clinical trial (Ophthalmology 2016;123:141-153).

The National Eye Survey of Trinidad and Tobago (NESTT): Rationale, Objectives and Methodology.

This paper describes the rationale, study design and procedures of the National Eye Survey of Trinidad and Tobago (NESTT). The main objective of this survey is to obtain prevalence estimates of vision impairment and blindness for planning and policy development.

Assessment of patient-reported outcomes in retinal diseases: a systematic review.

Advances in the understanding of the genetic, molecular, and cellular biology of retinal diseases have led to the development of new treatments. These expanding treatment options demand appropriate outcome measures for studies of treatment benefit including patient-reported outcomes (PROs). A plethora of PRO instruments assess impacts of retinal diseases from the patients' perspectives. We review all the studies that implemented PRO assessment in retinal diseases and also discuss quality assessment of the PRO instruments. We also include qualitative studies that explored quality of life impact on people with retinal diseases. Most studies used PRO instruments not specifically developed for retinal diseases (non-disease specific), nor have they undergone comprehensive validation in this disease group. A few retina-specific PRO instruments are available, but they suffer from limited content coverage of quality of life. Finally, we discuss the need for a new comprehensive and technologically advanced PRO instrument to assess quality of life impacts in retinal diseases.

Development of a Keratoconus-Specific Questionnaire Using Rasch Analysis.

To develop and validate a keratoconus-specific quality of life (QoL) questionnaire: the Keratoconus Outcomes Research Questionnaire (KORQ).

December consultation #7.

Validation of the Spanish Catquest-9SF in patients with a monofocal or trifocal intraocular lens.

To validate the Spanish Catquest-9SF and study patient-reported visual function after implantation of a trifocal versus a monofocal intraocular lens (IOL).

Erratum. Global Estimates on the Number of People Blind or Visually Impaired by Diabetic Retinopathy: A Meta-analysis From 1990-2010. Diabetes Care 2016;39:1643-1649.

Does blindness count? Disability weights for vision loss.

Number of People Blind or Visually Impaired by Glaucoma Worldwide and in World Regions 1990 - 2010: A Meta-Analysis.

To assess the number of individuals visually impaired or blind due to glaucoma and to examine regional differences and temporal changes in this parameter for the period from 1990 to 2012.

Assessment of Cataract Surgery Outcome Using the Modified Catquest Short-Form Instrument in China.

To assess cataract surgery outcome using the Rasch scaled Chinese version of the Catquest short-form.

Methods to Develop the Eye-tem Bank to Measure Ophthalmic Quality of Life.

There is an increasing demand for high-standard, comprehensive, and reliable patient-reported outcome (PRO) instruments in all the disciplines of health care including in ophthalmology and optometry. Over the past two decades, a plethora of PRO instruments have been developed to assess the impact of eye diseases and their treatments. Despite this large number of instruments, significant shortcomings exist for the measurement of ophthalmic quality of life (QoL). Most PRO instruments are short-form instruments designed for clinical use, but this limits their content coverage often poorly targeting any study population other than that which they were developed for. Also, existing instruments are static paper and pencil based and unable to be updated easily leading to outdated and irrelevant item content. Scores obtained from different PRO instruments may not be directly comparable. These shortcomings can be addressed using item banking implemented with computer-adaptive testing (CAT). Therefore, we designed a multicenter project (The Eye-tem Bank project) to develop and validate such PROs to enable comprehensive measurement of ophthalmic QoL in eye diseases.

Global Estimates on the Number of People Blind or Visually Impaired by Diabetic Retinopathy: A Meta-analysis From 1990 to 2010.

To estimate global and regional trends from 1990 to 2010 of the prevalence and number of persons visually impaired specifically by diabetic retinopathy (DR), as a complication of the precipitous trends in global diabetes, is fundamental for health planning purposes.

Item Banking Enables Stand-Alone Measurement of Driving Ability.

To explore whether large item sets, as used in item banking, enable important latent traits, such as driving, to form stand-alone measures.

Validation of an instrument to assess visual ability in children with visual impairment in China.

To validate a visual ability instrument for school-aged children with visual impairment in China by translating, culturally adopting and Rasch scaling the Cardiff Visual Ability Questionnaire for Children (CVAQC).

Vision and driving status of older Australians with cataract: an investigation of public hospital waiting lists.

Although cataract surgery can restore sight, lengthy waiting times are common in public hospitals in Australia. We investigated the driving status of older people during their surgical waiting period.

Global Vision Impairment and Blindness Due to Uncorrected Refractive Error, 1990-2010.

The purpose of this systematic review was to estimate worldwide the number of people with moderate and severe visual impairment (MSVI; presenting visual acuity <6/18, ≥3/60) or blindness (presenting visual acuity <3/60) due to uncorrected refractive error (URE), to estimate trends in prevalence from 1990 to 2010, and to analyze regional differences. The review focuses on uncorrected refractive error which is now the most common cause of avoidable visual impairment globally. : The systematic review of 14,908 relevant manuscripts from 1990 to 2010 using Medline, Embase, and WHOLIS yielded 243 high-quality, population-based cross-sectional studies which informed a meta-analysis of trends by region. The results showed that in 2010, 6.8 million (95% confidence interval [CI]: 4.7-8.8 million) people were blind (7.9% increase from 1990) and 101.2 million (95% CI: 87.88-125.5 million) vision impaired due to URE (15% increase since 1990), while the global population increased by 30% (1990-2010). The all-age age-standardized prevalence of URE blindness decreased 33% from 0.2% (95% CI: 0.1-0.2%) in 1990 to 0.1% (95% CI: 0.1-0.1%) in 2010, whereas the prevalence of URE MSVI decreased 25% from 2.1% (95% CI: 1.6-2.4%) in 1990 to 1.5% (95% CI: 1.3-1.9%) in 2010. In 2010, URE contributed 20.9% (95% CI: 15.2-25.9%) of all blindness and 52.9% (95% CI: 47.2-57.3%) of all MSVI worldwide. The contribution of URE to all MSVI ranged from 44.2 to 48.1% in all regions except in South Asia which was at 65.4% (95% CI: 62-72%). : We conclude that in 2010, uncorrected refractive error continues as the leading cause of vision impairment and the second leading cause of blindness worldwide, affecting a total of 108 million people or 1 in 90 persons.

Precision (repeatability and reproducibility) studies and sample-size calculation.

Number of People Blind or Visually Impaired by Cataract Worldwide and in World Regions, 1990 to 2010.

To estimate prevalence and number of people visually impaired or blind due to cataract.

Global, regional, and national comparative risk assessment of 79 behavioural, environmental and occupational, and metabolic risks or clusters of risks in 188 countries, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013.

The Global Burden of Disease, Injuries, and Risk Factor study 2013 (GBD 2013) is the first of a series of annual updates of the GBD. Risk factor quantification, particularly of modifiable risk factors, can help to identify emerging threats to population health and opportunities for prevention. The GBD 2013 provides a timely opportunity to update the comparative risk assessment with new data for exposure, relative risks, and evidence on the appropriate counterfactual risk distribution.