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NCT Number: NCT07694505

Survey of Sensory Impairment Indicators Among Adults Aged 65 Years and Older in Xinxing County

This cross-sectional population-based survey will be conducted among residents aged 65 years and older in Xinxing County, Yunfu, Guangdong Province, China. The study will use standardized eye examinations, visual acuity and refractive assessment, anterior segment examination, hearing screening and questionnaires to estimate effective refractive error coverage, effective cataract surgical coverage, effective hearing technology coverage, common eye disease status, and dual sensory impairment among older adults. The findings are intended to provide evidence for primary-level eye and hearing health services.

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Key information

Conditions

Visual Impairment Cataract Dual Sensory Impairment Ear Diseases Eye Diseases Hearing Disorders Hearing Loss Lens Diseases Nervous System Diseases Neurologic Manifestations Otorhinolaryngologic Diseases Pathological Conditions, Signs and Symptoms Refractive Error Refractive Errors Sensation Disorders Signs and Symptoms Vision Disorders

Age range

65 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Xinxing County

Yunfu, Guangdong, China

About this study

The study addresses visual impairment, hearing impairment, and dual sensory impairment among older adults in a county-level population. Participants will be recruited from older adults aged 65 years and above covered by the national basic public health service system in Xinxing County. A probability proportional to size cluster sampling method will be used, with village or residential committees as the sampling frame. Study procedures include distance and near visual acuity testing, assessment with habitual correction where applicable, pinhole testing when visual acuity is worse than 6/12, corresponding to decimal visual acuity less than 0.5, slit-lamp examination of the anterior segment, bilateral ear examination, hearing screening using the WHOears app, and relevant questionnaires. Data will be entered and managed electronically and analyzed using descriptive and inferential statistical methods.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged 65 years or older.
  • Voluntarily participates in the study and provides signed informed consent.

Exclusion criteria

  • Unable to cooperate with study-related examinations, including because of disability, communication barriers, or other reasons.
  • Has severe systemic disease that may affect study examinations or make participation potentially hazardous to health.
  • Considered by the investigator to be unsuitable for participation in the study.

Treatment and study plan

Primary outcomes

  1. Effective Refractive Error Coverage

    Time frame: At the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Effective refractive error coverage among the surveyed population, calculated at the person level as the proportion of participants with met refractive correction need among all participants with met, under-met, or unmet refractive correction need. The primary threshold will be worse than 6/12 in the better eye, corresponding to decimal visual acuity less than 0.5, with improvement to 6/12 or better through habitual correction, pinhole, or refraction used to classify met, under-met, and unmet need.

  2. Effective Cataract Surgical Coverage

    Time frame: At the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Effective cataract surgical coverage among the surveyed population, calculated at the person level as the proportion of participants with operated cataract and a good visual outcome among all participants with operated or operable cataract. Good visual outcome is defined as presenting visual acuity of 6/12 or better; the final operable cataract threshold should be confirmed before release.

  3. Effective Hearing Technology Coverage

    Time frame: At the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Effective hearing technology coverage among the surveyed population, calculated as the proportion of participants with moderate or greater hearing loss who regularly use hearing technology and report perceived benefit from its use. Hearing loss classification will be based on WHOears app screening and study questionnaire data.

Secondary outcomes

  1. Prevalence and Correction Status of Common Eye Diseases

    Time frame: At the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Prevalence and correction or treatment status of common eye diseases, including refractive error and cataract, based on standardized eye examinations and questionnaire data.

  2. Prevalence of Dual Sensory Impairment

    Time frame: At the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Prevalence of dual sensory impairment, defined as the proportion of participants who meet both the study visual impairment criterion and the study hearing impairment criterion. The visual impairment criterion will use worse than 6/12 in the better eye, corresponding to decimal visual acuity less than 0.5; the hearing impairment criterion will be based on WHOears app screening and study questionnaire data.

  3. Feasibility and Satisfaction of the SENSIIS System for Primary-Level Vision and Hearing Screening

    Time frame: At or after the cross-sectional survey visit during the 2026-06 to 2026-12 data collection period.

    Feasibility and satisfaction of the SENSIIS system for primary-level vision and hearing screening, assessed through questionnaires and interviews.

Study contacts

Contact information is provided by the study sponsor or research team.

Xiaotong Han

CONTACT

[email protected]

086-15999975559

Sponsors and collaborators

Lead sponsor

Zhongshan Ophthalmic Center, Sun Yat-sen University

Other

Registry information

Official study title

A Cross-Sectional Survey of Global Priority Sensory Impairment Indicators Among People Aged 65 Years and Older in Xinxing County

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Jul 10, 2026
Registry last updated
Jul 10, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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