Cataract, Refractive Errors
Conditions
Brief summary
To establish the baseline levels and monitor the progress of two newly introduced global eye health indicators in Xinxing County, including effective refractive error coverage (eREC) and effective cataract surgery coverage (eCSC). And to assess the prevalence and treatment status of common eye disease in Xinxing County.
Interventions
None listed
Sponsors
Zhongshan Ophthalmic Center, Sun Yat-sen University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
0 Years to 100 Years
Healthy volunteers
Yes
Inclusion criteria
* Primary and secondary school students in Xinxing County and people covered by the national basic public health service, including children aged 0-6, seniors over 65 years old and diabetic patients, etc. * Voluntarily participate in this study and provide signed informed consent
Exclusion criteria
* Unable to cooperate with research-related examinations, such as those with disabilities, communication barriers, or other reasons that prevent examinations * With serious systemic disease that may affect the examination, or participating in the research examination may endanger one's health * Other people who the researchers consider unsuitable to participate in this study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Visual acuity | through study completion, an average of 1 year | Test and record uncorrected visual acuity; if the participant wears glasses, measure the best corrected visual acuity with glasses. For participants with poor unaided or corrected visual acuity (\<4.7), perform additional pinhole visual acuity testing. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Strabismus | through study completion, an average of 1 year | Assess strabismus status and angle at both near and distance fixation. |
| Autorefraction | through study completion, an average of 1 year | Measure spherical power, cylindrical power, and axis in both eyes. Cycloplegia may be required in children, preferably using 1% tropicamide, one drop each time, three times. Before cycloplegia, check allergy history, medical history, and anterior chamber depth; inform guardians of potential risks and precautions related to cycloplegia, and ensure that guardians accompany the child throughout the procedure. |
| Questionnaire | through study completion, an average of 1 year | Questionnaires on demographics, disease histories and etc. |
| Fundus examination | through study completion, an average of 1 year | Examine the retina of both eyes and document any retinal pathology. If pupils are too small, mydriasis may be required, following the same drugs and procedures as above. |
| Anterior segment examination | through study completion, an average of 1 year | Use a slit lamp to examine eyelids, conjunctiva, cornea, anterior chamber, and lens in both eyes. Record any abnormalities. Grade lens opacities according to the LOCS III classification system. |
Contacts
Primary ContactLingyi Liang
Outcome results
None listed