Publications by authors named "Pyda Giridhar"
Purpose: To assess the changing trends in barriers towards accessing eye care in a rural population cohort from Southern India.
Methods: This is a population-based longitudinal cohort of participants (the Andhra Pradesh Eye Disease study [APEDS]) from three rural regions of Telangana and Andhra Pradesh who were evaluated at baseline (APEDS I; 1996-2000), along with follow-ups at 10 years (APEDS II; 2009-10) and 15 years (APEDS III; 2012-2016). At follow-up, all participants 30 years and above were administered a structured questionnaire on barriers to uptake of eye care services.
Aim: To investigate the barriers to the uptake of referral services from secondary care centers (SC) to a higher-level tertiary care center (TC) in Southern India.
Methods: A cross-sectional study was conducted in the Mahabubnagar district of Telangana, India, between February 1, 2018 to January 31, 2019 and all those referred from SC to TC between January 1, 2013 to December 30, 2016 were identified for interview. Based on inclusion criteria, of the 960 participants identified, 681 (70.
Background: To report 15-year incidence rate of primary open angle glaucoma (POAG) in the Andhra Pradesh Eye Disease Study (APEDS).
Methods: A population-based longitudinal study was carried out at three rural study sites. Phakic participants aged ≥40 years who participated at baseline (APEDS I) and the mean 15-year follow-up visit (APEDS III) were included.
Purpose: To assess the incidence, visual impairment, and blindness due to retinitis pigmentosa (RP) in a rural southern Indian cohort.
Methods: This is a population-based longitudinal cohort study of participants with RP from the Andhra Pradesh Eye Disease Study (APEDS) cohorts I and III, respectively. The study included participants with RP of APEDS I who were followed until APEDS III.
Background: To report the 15-year incidence rate of pseudo-exfoliation (PXF), PXF glaucoma and regional variation among rural participants in the Andhra Pradesh Eye Disease Study (APEDS) III.
Methods: This population-based longitudinal study was carried out at three rural study sites. Individuals of all ages who participated at baseline with a mean 15-year follow-up visit were included.
Purpose: To report on the 15-year incidence of primary angle closure disease (PACD) among participants aged ≥40 years in rural southern India DESIGN: Population-based longitudinal incidence rate study METHODS: Setting: 3 rural study centres.
Study Population: Phakic participants aged ≥40 years who participated in both examination time points.
Observation Procedures: All participants at the baseline and at the mean 15-year follow-up visit underwent a detailed interview, anthropometry, blood pressure measurement, and comprehensive eye examination.
Purpose: To report 15-year incidence rate of visual loss (blindness and visual impairment [VI]), causes, and risk factors for participants in Andhra Pradesh Eye Disease Study III (APEDS III).
Design: Population-based cohort study.
Methods: From 2012 to 2016, all rural participants were interviewed and underwent a comprehensive eye examination, including dilated fundus examination and imaging.
Purpose: To report 15-year incidence rate and associated risk factors of pterygium among people aged 30 years and above at baseline in the rural clusters of longitudinal Andhra Pradesh Eye Disease Study (APEDS III).
Methods: The baseline APEDS I included 7771 participants of which 6447 (83%) were traced and 5395 (83.7%) were re-examined in APEDS III.
Aim: To evaluate glaucoma-associated mortality in a rural cohort in India.
Methods: The study cohort comprised individuals aged 40 years and above who took part in the Andhra Pradesh Eye Disease Study (APEDS1) during 1996-2000. All participants underwent detailed comprehensive eye examination.
Objective: To examine barriers to the uptake of referral services from secondary care centres to higher level tertiary care centres.
Design: Cross-sectional study.
Setting: Secondary care hospital in Khammam District in the Telangana state of India.
Aim: To report on the utilization of eye care services and its associated factors among those with unilateral visual impairment (VI) in a rural South Indian population.
Methods: A population based cross-sectional study was conducted in three districts (Adilabad, Mahbubnagar and West Godavari) in the state of Andhra Pradesh, India. A detailed interview and a comprehensive eye examination were conducted.
Background: The rationale, objectives, study design and procedures for the longitudinal Andhra Pradesh Eye Disease Study are described.
Design: A longitudinal cohort study was carried out.
Participants: Participants include surviving cohort from the rural component of Andhra Pradesh Eye Disease Study.
Background: A large-scale prevalence survey of blindness and visual impairment (The Andhra Pradesh Eye Diseases Study [APEDS1]) was conducted between 1996-2000 on 10,293 individuals of all ages in three rural and one urban clusters in Andhra Pradesh, Southern India. More than a decade later (June 2009-March 2010), APEDS1 participants in rural clusters were traced (termed APEDS2) to determine ocular risk factors for mortality in this longitudinal cohort.
Methods And Findings: Mortality hazard ratio (HR) analysis was performed for those aged >30 years at APEDS1, using Cox proportional hazard regression models to identify associations between ocular exposures and risk of mortality.
Context : Globally, limited data are available on changing trends of blindness from a single region. Aims : To report the changing trends in the prevalence of blindness, visual impairment (VI), and visual outcomes of cataract surgery in a rural district of Andhra Pradesh, India, over period of one decade. Settings and Design : Rural setting; cross-sectional study.
View Article and Find Full Text PDFObjective: To assess the prevalence and causes of low vision in a population in southern India for planning low vision services.
Design: Population-based, cross-sectional study.
Participants: A total of 10,293 persons of all ages from 94 clusters representative of the population of the Indian state of Andhra Pradesh.
This study assessed the fear of being affected by illness and disability including blindness, and perceptions of the population towards blind people in the Indian state of Andhra Pradesh. A total of 11,786 subjects of all ages were sampled from 94 clusters in one urban and three rural study areas of Andhra Pradesh using stratified, random, cluster, systematic sampling to represent the population of this state. A total of 10,293 subjects of all ages underwent a detailed interview and dilated ocular evaluation.
View Article and Find Full Text PDFThis study assessed the use of spectacles and its demographic associations in a sample representative of the population of the Indian state of Andhra Pradesh. A total of 11,786 subjects of all ages were sampled from 94 clusters in one urban and three rural study areas of Andhra Pradesh using stratified, random, cluster, systematic sampling. The eligible subjects underwent detailed interview and eye examination including dilated examination of the posterior segment.
View Article and Find Full Text PDFPurpose: To assess the prevalence, distribution, and demographic associations of refractive error in the population of the southern Indian state of Andhra Pradesh.
Methods: From 94 clusters in one urban and three rural areas of Andhra Pradesh, 11 786 persons of all ages were sampled using a stratified, random, cluster, systematic sampling strategy in the Andhra Pradesh Eye Disease Study, a population-based cross-sectional study. A total of 10 293 people underwent an interview and detailed dilated eye examination.