The incidence of falls after first and second eye cataract surgery: a longitudinal cohort study.

OBJECTIVE: To compare fall incidence, and visual acuity and refractive status, before surgery and after first and second eye cataract surgery. DESIGN, SETTING: Prospective observational study in eight tertiary referral ophthalmology clinics in public hospitals in Sydney, Melbourne, and Perth. PARTICIPANTS: People aged 65 years or more referred for bilateral age-related cataract surgery during 2013-16, followed for maximum of 24 months after study entry or until six months after second eye surgery, whichever was shorter. MAIN OUTCOME MEASURES: Primary outcome: age- and sex-adjusted incidence of falls. SECONDARY OUTCOMES: visual acuity and refractive error. RESULTS: The mean age of the 409 included participants was 75.4 years (SD, 5.4 years); 220 were women (54%). Age- and sex-adjusted fall incidence prior to surgery was 1.17 (95% CI, 0.95-1.43) per year, 0.81 (95% CI, 0.63-1.04) per year after first eye surgery, and 0.41 (95% CI, 0.29-0.57) per year after second eye surgery. For the 118 participants who underwent second eye surgery and participated in all follow-up visits, age- and sex-adjusted incidence before (0.80 [95% CI, 0.55-1.15] falls per year) and after first eye surgery (0.81 [95% CI, 0.57-1.15] falls per year) was similar, but was lower after second eye surgery (0.32 [95% CI 0.21-0.50] falls per year). Mean habitual binocular visual acuity (logMAR) was 0.32 (SD, 0.21) before surgery, 0.15 (SD, 0.17) after first eye surgery, and 0.07 (SD, 0.15) after second eye surgery. CONCLUSIONS: First eye surgery substantially improves vision in older people with cataract, but second eye surgery is required to minimise fall incidence. Timely cataract surgery for both eyes not only optimises vision in older people with cataract, but also reduces their risk of injury from falls.

Changes in driving performance after first and second eye cataract surgery: A driving simulator study.

INTRODUCTION: This study investigated the separate impact of first eye and second eye cataract surgery on driving performance, as measured on a driving simulator. METHOD: Forty-four older drivers with bilateral cataract aged 55+ years, awaiting first eye cataract surgery participated in a prospective cohort study. They completed a questionnaire, visual tests and a driving simulator assessment at three time points: before first eye, after first eye, and after second eye cataract surgery. Generalized Estimating Equation Poisson or linear regression models were undertaken to examine the change in four driving outcomes of interest after adjusting for cataract surgery and other potential confounders. RESULTS: The rate of crashes/near crashes decreased significantly by 36% (incidence rate ratio (IRR) 0.64, 95% CI 0.47-0.88, p = 0.01) after first eye surgery and 47% (IRR 0.53, 95% CI 0.35-0.78, p < 0.001) after second eye surgery, compared to before first eye cataract surgery, after accounting for confounders. The rate of crashes/near crashes also decreased with better contrast sensitivity (IRR 0.69, 95% CI 0.48-0.90, p = 0.041). A separate model found that time spent speeding 10 kilometers per hour or more over the limit after second eye surgery was significantly less (0.14 min, p = 0.002), compared to before first eye surgery, after accounting for confounders. As contrast sensitivity improved, the duration of speeding also decreased significantly by 0.46 min (p = 0.038). There were no statistically significant changes in lane excursions or speed variation. Practical applications: The findings highlight the importance of timely first and second eye cataract surgery to ensure driver safety, especially as older drivers wait for second eye cataract surgery. It also provides further evidence that contrast sensitivity is probably a better predictor of driving ability in older drivers with cataract than visual acuity, the measure on which driver licensing requirements are currently based, and should also be used when assessing fitness to drive.

First and second eye cataract surgery and driver self-regulation among older drivers with bilateral cataract: a prospective cohort study.

BACKGROUND: Driving a car is the most common form of transport among the older population. Common medical conditions such as cataract, increase with age and impact on the ability to drive. To compensate for visual decline, some cataract patients may self-regulate their driving while waiting for cataract surgery. However, little is known about the self-regulation practices of older drivers throughout the cataract surgery process. The aim of this study is to assess the impact of first and second eye cataract surgery on driver self-regulation practices, and to determine which objective measures of vision are associated with driver self-regulation. METHODS: Fifty-five older drivers with bilateral cataract aged 55+ years were assessed using the self-reported Driving Habits Questionnaire, the Mini-Mental State Examination and three objective visual measures in the month before cataract surgery, at least one to three months after first eye cataract surgery and at least one month after second eye cataract surgery. Participants' natural driving behaviour in four driving situations was also examined for one week using an in-vehicle monitoring device. Two separate Generalised Estimating Equation logistic models were undertaken to assess the impact of first and second eye cataract surgery on driver-self-regulation status and which changes in visual measures were associated with driver self-regulation status. RESULTS: The odds of being a self-regulator in at least one driving situation significantly decreased by 70% after first eye cataract surgery (OR: 0.3, 95% CI: 0.1-0.7) and by 90% after second eye surgery (OR: 0.1, 95% CI: 0.1-0.4), compared to before first eye surgery. Improvement in contrast sensitivity after cataract surgery was significantly associated with decreased odds of self-regulation (OR: 0.02, 95% CI: 0.01-0.4). CONCLUSIONS: The findings provide a strong rationale for providing timely first and second eye cataract surgery for older drivers with bilateral cataract, in order to improve their mobility and independence.

Do older drivers with bilateral cataract self-regulate their driving while waiting for first eye cataract surgery?

OBJECTIVES: To analyze the association between visual impairment and driver self-regulation among a cohort of older drivers waiting for first eye cataract surgery. METHODS: Ninety-six drivers with bilateral cataract aged 55+ years were assessed before first eye cataract surgery. Data collection consisted of a researcher-administered questionnaire, objective visual measures (visual acuity, contrast sensitivity and stereopsis), a visual attention test (the useful field of view test) and a cognitive test (the Mini-Mental State Examination). Driver self-regulation practices were collected using the Driving Habits Questionnaire and were also measured with an in-vehicle monitoring device. Characteristics of self-regulators and non-self-regulators were compared and a logistic regression model was used to examine the association between 3 objective visual measures and driver self-regulation status. RESULTS: After controlling for potential confounding factors, only binocular contrast sensitivity (p=0.01), age (p=0.03) and gender (p=0.03) were significantly associated with driver self-regulation status. The odds of participants with better contrast sensitivity scores (better vision) self-regulating their driving in at least 1 driving situation decreased (odds ratio [OR]: 0.01, 95% CI: 0.00-0.28) while those of increasing age reported an increased odds of self-regulating their driving (OR: 1.08, 95% CI: 1.01-1.15). The odds of males self-regulating their driving was decreased compared with females (OR: 0.28, 95% CI: 0.09-0.86). CONCLUSIONS: Worse binocular contrast sensitivity scores, increasing age and being female were significantly associated with driver self-regulation. The study highlighted that while self-regulation was common among cataract patients, a proportion of those with poor vision did not self-regulate. Further research should determine how cataract patients could benefit from self-regulation strategies while waiting for cataract surgery.

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

PURPOSE: To clarify the effect of first-eye cataract surgery on the incidence of falls and identify components of visual function associated with fall risk. SETTING: Eight public hospital eye clinics in Sydney, Melbourne, and Perth, Australia. DESIGN: Prospective cohort study. METHODS: The study recruited patients who had bilateral cataract, were aged 65 years or older, and were on public hospital cataract surgery waiting lists. Comprehensive assessments of vision, physical function, and exercise activity were performed before and after first-eye cataract surgery. Falls were reported prospectively for up to 2 years and associations with falls were assessed using generalized linear mixed models. RESULTS: Of the 329 patients recruited, 196 (66.6%) completed first-eye surgery within the study period. First-eye cataract surgery reduced incident falls by 33% (adjusted incidence rate ratio 0.67; 95% confidence interval [CI], 0.49-0.92; P = .01). Poorer dominant-eye visual acuity was associated with falls during the study timeline (incidence rate ratio, 2.20; 95% CI, 1.02-4.74; P = .04). Patients with larger than a spherical equivalent of ±0.75 diopter change in the spectacle lens (operated eye) had a 2-fold greater incidence of falls in the period after first-eye cataract surgery than those with less or no change in lens power (incidence rate ratio, 2.17; 95% CI, 1.23-3.85; P = .008). CONCLUSIONS: First-eye cataract surgery significantly reduced incident falls. Major changes in the dioptric power of spectacle correction of the operated eye after surgery increased the fall risk. Cautious postoperative refractive management is important to maximize the benefit of cataract surgery as a fall-prevention measure.

Retinal detachment surgery in Western Australia (2000-2013): a whole-population study.

AIMS: To determine the background incidence rate of retinal detachment (RD) in Western Australia (WA) between 2000 and 2013, identify sociodemographic features associated with increased risk of incident RD and examine trends in surgical repair technique. METHODS: A whole-population retrospective observational study of all people in WA was carried out using linked hospital inpatient records. Cases of RD were identified using a combination of International Classification of Diseases, Ninth revision, Clinical Modification (ICD-9-CM) and ICD-10-AM (Australian modification) diagnosis and procedure codes from routinely collected hospital inpatient data provided by the WA Data Linkage Branch. A Poisson regression model was used to examine the influence of age group, gender, season and year of surgery on RD incidence rates. MAIN OUTCOME MEASURES: Age-standardised and sex-standardised incidence of first-eye RD and incidence rate ratio (IRR) of first-eye RD associated with age, sex and season. Counts of RD repair according to surgical technique. RESULTS: There were 4376 first-eye RD between 2000 and 2013. Age-standardised incidence ranged between 12.78 and 16.20 cases per 1 00 000 person-years. After adjusting for age, year and season, males had a higher risk than females for incident detachment (IRR 1.82, 95% CI (CI) 1.71 to 1.93), as did those aged 60-79 years (IRR 33.26, 95% CI 27.60 to 40.08) compared with those aged less than 20 years. RD repair with vitrectomy alone increased by 59% over the study period. CONCLUSION: The incidence of first-eye RD remained stable between 2000 and 2013. The risk was higher in males and with older age.

Fear of falling and physical function in older adults with cataract: Exploring the role of vision as a moderator.

AIM: To examine fear of falling and associated factors in a cohort of older adults with cataract, and investigate the interplay of vision and physical function with respect to fear of falling. METHODS: We analyzed baseline data from a longitudinal study of adults aged ≥65 years referred for cataract surgery. Fear of falling was assessed by the Short Falls Efficacy Scale-International. Physical function was determined by the Short Physical Performance Battery. Participants underwent assessment of visual acuity, contrast sensitivity, visual disability, quality of life, depressive symptoms, exercise frequency, comorbidity and falls history. Factors associated with fear of falling were assessed using linear regression. Planned stepwise regression investigated vision as a potential moderator of the relationship between physical function and fear of falling. RESULTS: Among 322 participants, 32.9 % (n = 106) showed high fear of falling. Poorer physical function, more comorbidities and greater visual disability were independently associated with a higher fear of falling (all P < 0.001). Visual disability moderated the relationship between physical function and fear of falling (ß = -0.10, P = 0.04). The impact of physical function on fear of falling was strongest in participants with higher (+1 standard deviation above the mean) visual disability (b = -0.21, P < 0.001). CONCLUSIONS: Fear of falling in older adults with cataract is greatest in those with poorer physical function and higher levels of visual disability. Perceived visual ability has a moderating role in the relationship between physical function and fear of falling; physical function alone might not adequately predict falls concern. Geriatr Gerontol Int 2017; 17: 1551-1558.

A validation study comparing self-reported travel diaries and objective data obtained from in-vehicle monitoring devices in older drivers with bilateral cataract.

BACKGROUND: Advances in technology have made it possible to examine real-world driving using naturalistic data obtained from in-vehicle monitoring devices. These devices overcome the weaknesses of self-report methods and can provide comprehensive insights into driving exposure, habits and practices of older drivers. AIM: The aim of this study is to compare self-reported and objectively measured driving exposure, habits and practices using a travel diary and an in-vehicle driver monitoring device in older drivers with bilateral cataract. METHODS: A cross-sectional study was undertaken. Forty seven participants aged 58-89 years old (mean=74.1; S.D.=7.73) were recruited from three eye clinics over a one year period. Data collection consisted of a cognitive test, a researcher-administered questionnaire, a travel diary and an in-vehicle monitoring device. Participants' driving exposure and patterns were recorded for one week using in-vehicle monitoring devices. They also completed a travel diary each time they drove a motor vehicle as the driver. Paired t-tests were used to examine differences/agreement between the two instruments under different driving circumstances. RESULTS: The data from the older drivers' travel diaries significantly underestimated the number of overall trips (p<0.001), weekend trips (p=0.002) and trips during peak hour (p=0.004). The travel diaries also significantly overestimated overall driving duration (p<0.001) and weekend driving duration (p=0.003), compared to the data obtained from the in-vehicle monitoring devices. No significant differences were found between instruments for kilometres travelled under any of the driving circumstances. CONCLUSIONS: The results of this study found that relying solely on self-reported travel diaries to assess driving outcomes may not be accurate, particularly for estimates of the number of trips made and duration of trips. The clear advantages of using in-vehicle monitoring devices over travel diaries to monitor driving habits and exposure among an older population are evident.

Endophthalmitis Prophylaxis in Cataract Surgery: Overview of Current Practice Patterns Around the World.

BACKGROUND: Acute-onset postoperative endophthalmitis after cataract surgery remains a rare but important cause of visual loss. There is no global consensus regarding the optimal strategies for prophylaxis of endophthalmitis and practices vary substantially around the world, especially with respect to the use of intracameral antibiotics. The European Society of Cataract & Refractive Surgeons in a randomized clinical trial (2007) reported an approximately 5-fold reduction in endophthalmitis rates associated with the use of intracameral cefuroxime. Despite this report, the use of intracameral antibiotics has not been universally adopted. METHODS: Various endophthalmitis prophylaxis patterns around the world (including the United States, Canada, Australia/New Zealand, Japan, China, India, Indonesia, South Africa, Argentina, Russia, Sweden and Mexico) are compared. Each contributing author was asked to provide similar information, including endophthalmitis rates based on published studies, current practice patterns, and in some cases original survey data. Various methods were used to obtain this information, including literature reviews, expert commentary, and some new survey data not previously published. RESULTS: Many different practice patterns were reported from around the world, specifically with respect to the use of intracameral antibiotics. CONCLUSION: There is no worldwide consensus regarding endophthalmitis prophylaxis with cataract surgery.

While We Waited: Incidence and Predictors of Falls in Older Adults With Cataract.

PURPOSE: Strong evidence indicates an increased fall risk associated with cataract. Although cataract surgery can restore sight, lengthy wait times are common for public patients in many high-income countries. This study reports incidence and predictors of falls in older people with cataract during their surgical wait. METHODS: Data from a prospective study of falls in adults aged ≥65 years who were awaiting cataract surgery in public hospitals in Australia were analyzed. Participants underwent assessment of vision, health status, and physical function, and recalled falls in the previous 12 months. Falls were self-reported prospectively during the surgical wait. RESULTS: Of 329 participants, mean age was 75.7 years; 55.2% were female. A total of 267 falls were reported by 101 (30.7%) participants during the surgical wait (median observation time, 176 days): an incidence of 1.2 falls per person-year (95% confidence interval [CI] 1.0-1.3). Greater walking activity (incidence rate ratio [IRR] 1.06, 95% CI 1.01-1.10; P = 0.02, per additional hour/week), poorer health-related quality of life (IRR 1.12, 95% CI 1.05-1.20; P < 0.001, per 5-unit decrease), and a fall in the prior 12 months (IRR 2.48, 95% CI 1.57-3.93; P < 0.001) were associated with incident falls. No visual measure independently predicted fall risk. More than one-half (51.7%) of falls were injurious. CONCLUSIONS: We found a substantial rate of falls and fall injury in older adults with cataract who were awaiting surgery. Within this relatively homogenous cohort, measures of visual function alone inadequately predicted fall risk. Assessment of exposure to falls through physical activity frequency may prove valuable in identifying those more likely to fall during the surgical wait.

Risk factors for recurrent injurious falls that require hospitalization for older adults with dementia: a population based study.

BACKGROUND: Older adults with dementia are at an increased risk of falls, however, little is known about risk factors for recurrent injurious falls (a subsequent fall after the first fall has occurred) among this group. This study aimed to identify risk factors for recurrent injurious falls requiring hospitalization among adults aged 60+ years with dementia. METHODS: This retrospective, whole-population cohort study was conducted using the Western Australian Hospital Morbidity Data System and Western Australian Death Registrations from 2001 to 2013. Survival analysis using a stratified conditional Cox model (type 1) was undertaken to identify risk factors for recurrent injurious falls requiring hospitalization. RESULTS: There were 32,519 participants with an index hospital admission with dementia during the study period. Over 27 % (n = 8970) of the cohort experienced a total of 11,073 injurious falls requiring hospitalization during follow up with 7297 individuals experiencing a single fall, 1330 experiencing two falls and 343 experiencing three or more falls. The median follow-up time for each individual was 2.49 years. Females were at a significantly increased risk of 7 % for recurrent injurious falls resulting in hospitalization (adjusted hazard ratio 1.07, 95 % CI 1.01-1.12), compared to males. Increasing age, living in rural areas, and having an injurious fall in the year prior to the index hospital admission with dementia also increased the risk of recurrent injurious falls resulting in hospitalization. CONCLUSIONS: Screening those with dementia for injurious falls history could help to identify those most at risk of recurrent injurious falls. Improvement of heath care and falls prevention services for those with dementia who live in rural areas may also reduce recurrent injurious falls.

Depressive symptoms in older adults awaiting cataract surgery.

BACKGROUND: To assess the prevalence and predictors of depressive symptoms in a cohort of older adults awaiting cataract surgery and establish threshold vision at which depressive symptoms may emerge. DESIGN: Analysis of cross-sectional baseline data from a longitudinal cohort study of patients aged ≥65 years on Australian public hospital cataract surgery waiting lists. PARTICIPANTS: We included 329 participants enrolled October 2013-August 2015. METHODS: Participants completed assessment of depressive symptoms, visual disability, quality of life, social participation and exercise frequency at least one month prior to cataract surgery. High and low contrast habitual vision was examined and systemic comorbidities noted. MAIN OUTCOME MEASURE: Depressive symptoms prior to first eye cataract surgery. RESULTS: The prevalence of depressive symptoms was 28.6% (94/329). Univariate analysis identified that participants with poorer high contrast vision, reduced quality of life, greater patient-reported visual disability, higher comorbidity score and who were taking more medications were more likely to exhibit signs of depression. Greater patient-reported visual disability (P = 0.02), reduced quality of life (P = 0.003) and a higher comorbidity score (P = 0.02) remained significantly associated with depressive symptoms in the multivariable model. Depressive symptoms emerged at a visual acuity of 6/12. CONCLUSIONS: These findings demonstrate a high prevalence of depressive symptoms in older persons with cataract, emerging at modest levels of vision loss. Efficient referral processes, timely surgical management, and improved screening and coordinated treatment of depressive symptoms during the surgical wait may minimize the negative psychological effects of cataract in this already vulnerable population.

Bilateral cataract, crash risk, driving performance, and self-regulation practices among older drivers.

UNLABELLED: This comprehensive literature review summarizes published studies examining cataract and cataract surgery and driving outcomes to identify gaps in the literature that require further research. Six electronic databases were searched for articles published up to and including March 2015. Articles were reviewed if they included older drivers with cataract or drivers who had cataract surgery and at least 1 of the following driving outcomes: crash risk, driving self-regulation practices, and driving performance. There was consistent evidence that cataract negatively affects driving and that cataract surgery is beneficial to driving outcomes. Future research should examine the separate effects of first- and second-eye cataract surgery on crash risk, driving self-regulation, and driving performance. It should also determine how visual measures relate to driving performance among cataract patients so those most at risk for driving difficulties can be identified, advised, and possibly prioritized for surgery. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.

Motor Vehicle Crashes and Dementia: A Population-Based Study.

OBJECTIVES: To compare the frequency of motor vehicle crashes of drivers aged 50 and older with a diagnosis of dementia with that of a group without dementia in the 3 years before and 3 years after an index hospital admission using the Western Australian Data Linkage System (WADLS). DESIGN: Retrospective population-based study. SETTING: De-identified data were obtained from Western Australian Hospital Morbidity Data System and the Western Australian Death Registrations using the WADLS from 2004 to 2010. The Integrated Road Information System was used to identify individuals involved in a crash as the driver from 2001 to 2013. PARTICIPANTS: Individuals with dementia with an index hospital admission (n = 1,666, 34%) and individuals without dementia (n = 3,636, 66%) who had been involved in at least one motor vehicle crash as the driver from 2001 to 2013. MEASUREMENTS: Involvement in a police-reported crash as the driver. RESULTS: The occurrence of one or more crashes as the driver in the dementia group (43% had a crash as the driver) was higher in the 3 years before the index hospitalization than in the comparison group (30% had a crash as the driver). The risk of a crash was 93% less for those with dementia in the 3 years after an index hospital admission with dementia than for those without dementia (incidence rate ratio = 0.07, 95% confidence interval = 0.06-0.09) compared to the previous 3 years, after adjusting for relevant confounders. CONCLUSION: Although older drivers may give up driving after a diagnosis of dementia, they may be at greater risk of crashing before diagnosis or in the early stages of dementia. Better methods are needed to identify at-risk drivers with early dementia and prevent crashes.

Big data and ophthalmic research.

Large population-based health administrative databases, clinical registries, and data linkage systems are a rapidly expanding resource for health research. Ophthalmic research has benefited from the use of these databases in expanding the breadth of knowledge in areas such as disease surveillance, disease etiology, health services utilization, and health outcomes. Furthermore, the quantity of data available for research has increased exponentially in recent times, particularly as e-health initiatives come online in health systems across the globe. We review some big data concepts, the databases and data linkage systems used in eye research-including their advantages and limitations, the types of studies previously undertaken, and the future direction for big data in eye research.

A genetic algorithm enabled ensemble for unsupervised medical term extraction from clinical letters.

Despite the rapid global movement towards electronic health records, clinical letters written in unstructured natural languages are still the preferred form of inter-practitioner communication about patients. These letters, when archived over a long period of time, provide invaluable longitudinal clinical details on individual and populations of patients. In this paper we present three unsupervised approaches, sequential pattern mining (PrefixSpan); frequency linguistic based C-Value; and keyphrase extraction from co-occurrence graphs (TextRank), to automatically extract single and multi-word medical terms without domain-specific knowledge. Because each of the three approaches focuses on different aspects of the language feature space, we propose a genetic algorithm to learn the best parameters of linearly integrating the three extractors for optimal performance against domain expert annotations. Around 30,000 clinical letters sent over the past decade from ophthalmology specialists to general practitioners at an eye clinic are anonymised as the corpus to evaluate the effectiveness of the ensemble against individual extractors. With minimal annotation, the ensemble achieves an average F-measure of 65.65 % when considering only complex medical terms, and a F-measure of 72.47 % if we take single word terms (i.e. unigrams) into consideration, markedly better than the three term extraction techniques when used alone.

The Cataract Extraction and Driving Ability Research Study Protocol: characterisation of deficits in driving performance and self-regulation among older drivers with bilateral cataract.

PURPOSE: Cataract is one of the leading causes of visual impairment in Australia. As more older adults are driving, the number of people with cataract on the roads will increase. A greater understanding of the effects of cataract and cataract surgery on driving performance and driver self-regulation is essential to improve road safety. This proposed study will examine the effects of bilateral cataract surgery on driving outcomes including driving performance and driver self-regulation. METHODS: A 3-year prospective study will be undertaken in Western Australia (WA) and New South Wales (NSW). Three hundred participants (n=150 from WA and n=150 from NSW) aged >60 years with bilateral cataract will be assessed at three time points: the month before first-eye cataract surgery, 1-3 months after first-eye cataract surgery and 3 months after second-eye cataract surgery. Driving performance will be assessed using a driving simulator and driver self-regulation patterns measured using in-vehicle driver-monitoring devices. Objective visual measures, quality of life and self-reported driving difficulties will also be collected at the three assessments. CONCLUSIONS: The study results may impact on ophthalmology, optometry and general medical practices in terms of the driving advice provided to patients with bilateral cataract and those undergoing cataract surgery. The information gained from this study will allow these professionals to advise patients about specific driving difficulties they may face at different stages of cataract surgery and appropriate self-regulation practices. The results will be of use to licensing authorities in the assessment of 'fitness to drive'.

Long-term trends and outcomes of anterior vitrectomy in Western Australia.

PURPOSE: To describe trends, risk factors and outcomes of anterior vitrectomy during cataract and intraocular lens (IOL) surgery. METHODS: All patients 16 years and older undergoing cataract and IOL surgery in Western Australia (WA) from January 1980 to December 2001 (n = 115 815) were included. Hospital administrative data were used to identify all cataract and IOL procedures and subsequent admissions for retinal detachment, IOL dislocation, endophthalmitis and pseudophakic corneal oedema. Data were validated with chart review and analysed to identify trends and risk factors for anterior vitrectomy and the risk of subsequent complications. RESULTS: In total, 1390 (1.2%) anterior vitrectomies were performed. The rate increased with change in surgical technique. Significant risk factors for anterior vitrectomy were age <50 years (OR 1.31), male sex (OR 1.23), IOL procedure (OR 11.45) and operations in public hospitals (OR 1.99) or rural/remote (OR 1.40) areas. Anterior vitrectomy was strongly associated with increased risk of retinal detachment (RD) (RR 18.5), endophthalmitis (RR 3.6), IOL dislocation (RR 21.1) and pseudophakic corneal oedema (RR 17.3). Retinal detachments and IOL dislocations occur earlier after anterior vitrectomy. CONCLUSION: Anterior vitrectomy rates have remained stable since the introduction of phacoemulsification. Anterior vitrectomy is a major risk factor for serious complications compared with uncomplicated surgery, particularly RD and IOL dislocation. We identified an increasing trend in anterior vitrectomy being performed during extracapsular and IOL surgery.

Falls in Older people with Cataract, a longitudinal evalUation of impact and riSk: the FOCUS study protocol.

BACKGROUND: Falls result in >$1 billion in treatment, disability, lost output and mortality each year in Australia and people with cataract are at increased risk. Previous research is inconclusive; one large Australian study using linked hospital data found no protective effect of cataract surgery. We aim to examine the impact of cataract-related vision impairment on falls risk and the additional effects of delays in access to surgery, refractive management (type of spectacles and changes to spectacle prescription) and the resulting level of function, particularly binocular function which can impact balance. METHOD/DESIGN: A prospective, 24-month cohort study is planned involving over 700 patients aged 70 years or older with bilateral cataract presenting for surgery at five public hospital eye clinics in Sydney, Melbourne and Perth, Australia. The primary outcomes will be self-reported falls and falls requiring medical care, assessed objectively using administrative data sets. Secondary outcomes include community participation, quality of life, mood and depressive symptoms. McNemar's test will be used to evaluate differences in falls rate before, after first eye and after second eye cataract surgery. Generalised Estimating Equations linear regression analysis will be undertaken to examine factors associated with falls risk and the secondary outcomes. DISCUSSION: With limited resources to further shorten public waiting lists, there is a need to better understand an individuals' risk of fall injury or other negative consequences while waiting for surgery. The findings of this project will inform the development of strategies to reduce falls risk in the many older people with cataract.

Impact of a national system for waitlist prioritization: the experience with NIKE and cataract surgery in Sweden.

PURPOSE: To evaluate waiting times for first-eye cataract surgery in Sweden following widespread adoption of the Nationell Indikationsmodell for Kataraktextraktion (NIKE) tool for prioritizing patients for cataract surgery. METHODS: Waiting times for all first-eye cataract surgeries in Sweden in 2009-2011 were identified from the Swedish National Cataract Register. Waiting times were compared according to demographic, clinical and NIKE indication group for surgery. Multivariate logistic regression modelling was used to determine factors associated with waiting times less than the 3-month Government guarantee period. RESULTS: There were 141,070 first-eye cataract surgeries in 2009 to 2011; an annual increase of around 6%. Over the study period, mean waiting times decreased across all NIKE groups. The proportion waiting <3 months for surgery also increased across all NIKE groups. Surgery within 3 months of waitlisting was more likely for patients with a NIKE 1 indication classification (most need for surgery), in later years, male patients, younger patients and patients with a preoperative visual acuity in the better eye worse than 6/24. CONCLUSIONS: Prioritizing patients for cataract surgery using NIKE reduces waiting times for those with the greatest need.