Epidemiological Research

The epidemiological research projects that are currently being implemented by the GPR ICARE team at LVPEI are:-

Assessing the trends in prevalence and causes of visual impairment in the south Indian state of Telangana LVPEI Trends Project

Supported by : Lions Clubs International Foundation (LCIF)

The rapid assessment survey using Rapid Assessment of Visual Impairment (RAVI) was conducted in Warangal and Khammam districts in Telangana during 2011-2012. After this study, LVPEI has established a network of one secondary centre and ten vision centres in Khammam district. No intervention was done in Warangal district. The study is being repeated in same geographical locations using the same protocols to understands the trends in prevalence of visual impairment over time.

Primary Objectives

  1. To determine the in prevalence and causes of visual impairment in two districts in Telangana.
  2. To compare the prevalence estimates with survey conducted during 2011-2012 in geographical locations.

Secondary Objectives

  1. To assess visual outcomes after cataract surgery among those who had cataract surgery in the past.
  2. To assess the trends in barriers for uptake of eye care service in the two districts in Telangana.



Impact of intervention for avoidable visual impairment among the Elderly Population in Residential Care in and around Hyderabad, India : Hyderabad Ocular Morbidity in Elderly Study (HOMES)

(Wellcome Trust / DBT India Alliance - Early Career Fellowship project)

Visual impairment is more common among elderly people living in residential care when compared to those living in non-institutionalized environments. A significant proportion has impairment that can be corrected by simple interventions such as the use of spectacles and cataract surgery. This research aims to investigate the prevalence and causes of visual impairment and assess the impact of an intervention including the provision of cataract surgery and spectacles on the visual functions of elderly individuals living in residential care in India. A sample of over 1500 participants from 'home for the aged' institutions will be recruited for this study which scheduled to be launched in mid-2017.

Specific Aims

  1. To determine the prevalence and causes of visual impairment among the elderly in residential care in Hyderabad, India.
  2. To assess the impact of visual acuity loss (visual impairment) on self-reported visual functions (VFQ) and performance based measures (PBM).
  3. To assess the impact of interventions for visual impairment on self-reported visual functions (VFQ) and performance based measures (PBM)



Publications:

1. Publications @ Andhra Pradesh Eye Disease Study III:
Khanna RC, Murthy GV, Marmamula S, Mettla AL, Giridhar P, Banerjee S, Shekhar K, Chakrabarti S, Gilbert C, Rao GN; Andhra Pradesh Eye Disease Study Group. Longitudinal Andhra Pradesh Eye Disease Study: rationale, study design and research methodology. Clin Exp Ophthalmol. 2016 Mar;44(2):95-105. doi: 10.1111/ceo.12633. Epub 2015 Nov 8. PubMed PMID: 26283446.

2. Publications @ Prevalence, Causes and Risk Factors for Blindness and Low Vision in Children in Krishna District of Andhra Pradesh, India
Marmamula S, Khanna RC, Mettla AL, Pehere NK, Keeffe JE, Yameneni DK, Rao GN. Agreement and diagnostic accuracy of vision screening in children by teachers, community eye-health workers and vision technicians. Clin Exp Optom. 2017 Jun 28. doi: 10.1111/cxo.12559. [Epub ahead of print] PubMed PMID: 28657122.



Prevalence, Causes and Risk Factors for Blindness and Low Vision in Children in Krishna District of Andhra Pradesh, India

Supported by Lions Clubs International Foundation (LCIF)

The aim of the study is to provide the estimates of the prevalence, causes and risk factors for childhood related diseases. The project is ongoing in Krishna District, Andhra Pradesh (AP), India where L V Prasad Eye Institute (LVPEI) has existing Vision Centres (VC) which are connected to its tertiary eye hospital in that district. 80,000 Children will be covered for screening and referral services under this project. The project started on June 2015 and data collection is ongoing. Lions Clubs International Foundation (LCIF) - Sight first grant is supporting LVPEI to implement this project.

Primary Objective

  1. To estimate prevalence, causes and risk factors for blindness (BL) and low vision (VL) in children

Secondary Objectives

  1. To assess Knowledge, Attitude and Practices (KAP) of parents for the uptake of eye care services in children
  2. To understand barriers in accessing eye care services including low vision and rehabilitation services


Completed Projects details - PDF document

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