Intraoperative Intraocular Lens Waste: Incidence, Cost and Reasons.

Purpose: To evaluate the incidence and cost of intraocular lens(IOL) waste during IOL implantation, as well as the reasons for it.

Methods: A retrospective analysis was conducted on the data of 485 patients from the IOL waste registers of a single tertiary eye hospital in China during 2016-2020. The primary outcomes were the incidence, cost, and reasons for different IOL properties.

Sight impairment registration in Trinidad: trend in causes and population coverage in comparison to the National Eye Survey of Trinidad and Tobago.

Background: Little was known about the population coverage and causes of sight impairment (SI) registration within the Caribbean, or the extent to which register studies offer insights into population eye health.

Methods: We compared causes of SI registration in the Trinidad and Tobago Blind Welfare Association (TTBWA) register with findings from the 2014 National Eye Survey of Trinidad and Tobago (NESTT), and estimated registration coverage. Cross-sectional validation studies of registered clients included interviews, visual function and cause ascertainment in July 2013, and interviews and visual function in July 2016.

Aspirin intake is not associated with diabetic retinopathy and diabetic macular edema: A report from the Fushun diabetic retinopathy cohort study.

Purpose: We aimed to study the effects of aspirin intake for diabetic retinopathy (DR) and diabetic macular edema (DME) in a cohort from northeastern China.

Methods: Participants in the Fushun Diabetic Retinopathy Cohort Study were enrolled between July 2012 and May 2013. Fundus photographs of six fields were graded according to the modified Airlie House Classification system.

The societal economic impact of vision impairment in adults 40 years and above: findings from the National Eye Survey of Trinidad and Tobago.

Background: Understanding and mitigating the societal economic impact of vision impairment (VI) is important for achieving the Sustainable Development Goals.

Aim: To estimate the prevalent societal economic impact of presenting VI in Trinidad and Tobago using bottom-up cost and utilisation data from the 2014 National Eye Survey of Trinidad and Tobago.

Methods: We took a societal perspective to combine comprehensive, individual-level cost and utilisation data, with population-based prevalence estimates for VI, and additional data from a contemporaneous national eyecare system survey.

Inner limiting membrane peeling prevents secondary epiretinal membrane after vitrectomy for proliferative diabetic retinopathy.

Aim: To evaluate the role of internal limiting membrane (ILM) peeling in preventing secondary epiretinal membrane (ERM) formation in pars plana vitrectomy (PPV) for proliferative diabetic retinopathy (PDR).

Methods: This retrospective study analyzed the medical records of patients who underwent PPV for PDR and were followed up for minimum 3mo. ILM peeling was performed based on the intraoperative surgeons' judgments.

Incidence, progression and regression of diabetic retinopathy in a northeastern Chinese population.

Aim: To determine the incidence, progression and regression of diabetic retinopathy (DR), with corresponding risk factors, in a northeastern Chinese population of patients with type 2 diabetes.

Methods: Among 2006 patients who completed baseline examinations in 2012-2013 and underwent re-examination after a mean interval of 21.2 months, 1392 patients with gradable fundus photographs for both baseline and follow-up examinations were included.

Refractive Error in a Chinese Population with Type 2 Diabetes: A Report from the Fushun Diabetic Retinopathy Cohort Study.

Purpose: To describe the prevalence and risk factors for refractive errors in a northeastern Chinese population with type 2 diabetes.

Methods: Subjects (age ≥30 years) from a community-based study, the Fushun Diabetic Retinopathy Cohort Study, were enrolled. All subjects underwent comprehensive ocular examinations, including autorefraction.

Identification of key genes and pathways in scleral extracellular matrix remodeling in glaucoma: Potential therapeutic agents discovered using bioinformatics analysis.

Glaucoma is a leading cause of irreversible blindness. Remodeling of the scleral extracellular matrix (ECM) plays an important role in the development of glaucoma. The aim of this study was to identify the key genes and pathways for the ECM remodeling of sclera in glaucoma by bioinformatics analysis and to explore potential therapeutic agents for glaucoma management.

Interocular Asymmetry of Visual Field Loss, Intraocular Pressure, and Corneal Parameters in Primary Open-Angle Glaucoma.

Objectives: This study aimed to assess the association between the corneal biomechanical parameters and visual field (VF) loss in patients with asymmetric primary open-angle glaucoma (POAG).

Methods: A total of 89 POAG patients (50 males, 56.2%) with asymmetric VF loss, aged 65.

Pars plana vitrectomy relieves the depression in patients with symptomatic vitreous floaters.

Aim: To investigate the depressive state among the patients with symptomatic vitreous floaters (SVF), as well as its change after SVF removal vitrectomy surgery.

Methods: Twenty-eight eyes of 28 patients who underwent 27-gauge pars plana vitrectomy (PPV) for SVF were included. Thirty-nine eyes of 39 age- and gender-matched healthy volunteers without SVF were also recruited as a healthy control.

National Eye Survey of Trinidad and Tobago (NESTT): prevalence, causes and risk factors for presenting vision impairment in adults over 40 years.

Aim: To estimate the prevalence, causes and risk factors for presenting distance and near vision impairment (VI) in Trinidad and Tobago.

Methods: This is a national, population-based survey using multistage, cluster random sampling in 120 clusters with probability-proportionate-to-size methods. Stage 1 included standardised, community-based measurement of visual acuity.

A comparison between topical and retrobulbar anesthesia in 27-gauge vitrectomy for vitreous floaters: a randomized controlled trial.

Background: To compare the safety and efficacy of topical anesthesia versus retrobulbar anesthesia in 27-gauge pars plana vitrectomy (PPV) for vitreous floaters.

Methods: 30 patients with vitreous floaters were randomized into Group T (topical anesthesia, proparacaine eye drop) and Group R (retrobulbar anesthesia), and underwent 27-gauge PPV. A 5-point visual analogue pain scale (VAPS) was used to assess patients' pain experience of anesthesia and surgery procedure (during surgery, 2 h and 1 day after surgery).

Health system dynamics analysis of eyecare services in Trinidad and Tobago and progress towards Vision 2020 Goals.

Avoidable blindness is an important global public health concern. This study aimed to assess Trinidad and Tobago's progress towards achieving the Pan American Health Organization, 'Strategic Framework for Vision 2020: The Right to Sight-Caribbean Region,' indicators through comprehensive review of the eyecare system, in order to facilitate health system priority setting. We administered structured surveys to six stakeholder groups, including eyecare providers, patients and older adult participants in the National Eye Survey of Trinidad and Tobago.

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

Purpose: 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.

Methods: A population-based, cross-sectional survey was undertaken using random multistage cluster sampling, with probability-proportionate-to-size methods.

Surgically induced astigmatism. A comparison of different cataract incisions and closures.

A single center, single surgeon, nonrandomized, prospective clinical trial was performed comparing the keratometric induced astigmatism by different types of incisions and closures, one day, one week, one month and three months after 255 cataract surgeries. After phacoemulsification, or in rare cases after extracapsular cataract extraction, through a scleral pocket or limbal incision, patients received either a 5 x 6 mm, 5.5 mm, or 6 mm diameter polymethylmethacrylate optic posterior chamber intraocular lens.