Myopia ProgressionNCT06498947
Factors Influencing Physiological Hyperopia in Children
An observational study of Myopia Progression, run by Beijing Tongren Hospital at 1 site in China.
Trial summary
The trend of myopia in children and its low age is a major social and public health problem in China. More seriously, retinopathy associated with high myopia has become the number one cause of irreversible blinding eye disease in adults in some parts of China. Read more about this study
- Who is it for?
- Ages 6 to 9 yearsHealthy volunteers can take part
- Conditions the study is for
- Myopia Progression
- How many people
- 1,006 participants
- Where
- 1 siteChina
- Study dates
- 1 Jun 2024to 31 Dec 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 9 years
- All sexes
- Healthy volunteers accepted
- Child
Study population: The research group has already sampled 3-6 years old preschool children from 22 kindergartens in Haidian District, Beijing, and included them in the baseline cohort, which has been followed up continuously for 3 years. The research group will continue to add new samples to the existing cluster sampling cohort and reorganize the cohort of children aged 6-9 years old to conduct this study.
Who may be able to join
- Children aged 6-9 years old, male or female;
- Good cooperation in examination;
- Parents cooperate and sign the informed consent form;
Who cannot join
- Children with a history of drug allergy;
- Pediatric patients with heart disease, cranial trauma or epilepsy, Down syndrome, or glaucoma will be excluded from the cohort.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
Beijing Tongren Hospital
Beijing, Beijing Municipality, 100005
Yonghong Jiao, MD, Ph D., 13051612248, yhjiao2001@aliyun.com
About this study
Official title: Factors Influencing Physiological Hyperopia in Children: A Prospective Nested Case-control Study
The trend of myopia in children and its low age is a major social and public health problem in China. More seriously, retinopathy associated with high myopia has become the number one cause of irreversible blinding eye disease in adults in some parts of China. Physiological hyperopia has a protective effect on preventing the onset of myopia, and is one of the strongest predictors of myopia on its own, which is significant in curbing myopia from occurring at a younger age and preventing the development of high myopia before adulthood. However, it is not yet known how the physiological hyperopia changes in childhood, the stage at which the critical inflection point occurs, which key factors lead to the rapid fading of the physiological hyperopia and progression to myopia, and the strength of its effect. In the early stage of the study, the research group established a prospective cohort of preschoolers based on natural population sampling, which included a total of 2109 preschoolers aged 3-6 years from 22 kindergartens in a district in Beijing, and completed a 2-year follow-up, obtaining exploratory results on the changing pattern of physiological hyperopia and key influencing factors in younger children. The group will add new samples to the existing whole cohort sampling cohort and adopt the design scheme of prospective nested case-control study to determine the changing trend of fading trajectory of physiological hyperopia in school-age children, key inflection points and key risk factors, so as to provide new techniques for the prevention and control of childhood myopia.
- Conditions
- Myopia Progression
- Being tested
- This study was observational with no intervention.
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
This study was observational with no intervention.Other
This study was observational with no intervention.
| Study group | Role | What they receive |
|---|---|---|
| Group A | Group A is defined as those whose physiological hyperopia (sphere+1/2 cylinder) of at least - 0.5 diopters(D) in either eye. Receives: Other: This study was observational with no intervention. | |
| Group B | Group B is defined as whose physiological hyperopia exceeds 95% confidence interval for children of same age (Near Myopia). Receives: Other: This study was observational with no intervention. | |
| Group C | Group C is defined as whose physiological hyperopia exceeds 90% confidence interval for children of same age. Receives: Other: This study was observational with no intervention. |
What is being measured
The primary outcome is the main question the study is designed to answer.
myopia
Myopia in this study was defined as an equivalent spherical lens degree ( SER ) error (sphere+1/2 cylinder) of at least - 0.5 diopters(D) in either eye.
Measured: 1 year
Secondary outcomes (5)
Myopia Prevalence
Myopia is defined as a spherical equivalent refractive (SER) (sphere + 1/2 cylinder) of at least -0.5 diopter (D) in either eye.
Measured: 3 year
The change in ocular axis length
The change in ocular axis length was calculated by subtracting each year's measurement from the previous year's measurement.
Measured: 3 year
The change in anterior chamber depth
Calculate the change in anterior chamber depth by subtracting each year's measurement from the previous year's measurement.
Measured: 3 year
The change in corneal curvature
Calculate the change in corneal curvature by subtracting each year's measurement from the previous year's measurement.
Measured: 3 year
The change in the ratio of axial length to corneal curvature
Calculate the change in the ratio of axial length to corneal curvature by subtracting each year's measurement from the previous year's measurement.
Measured: 3 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jul 2024
- Study start1 Jun 2024
- Primary completion1 Jan 2025 (estimated)
- Study completion31 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (17)Papers the sponsor has linked to this study.
- Other trials for Myopia ProgressionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 1,006 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Beijing Tongren Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06498947
- Sponsor's protocol ID
- YH Jiao
- Status last verified
- Jan 2024
- First submitted
- 5 Jul 2024
- Last updated
- 12 Jul 2024
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Wang J, Li Y, Musch DC, Wei N, Qi X, Ding G, Li X, Li J, Song L, Zhang Y, Ning Y, Zeng X, Hua N, Li S, Qian X. Progression of Myopia in School-Aged Children After COVID-19 Home Confinement. JAMA Ophthalmol. 2021 Mar 1;139(3):293-300. doi: 10.1001/jamaophthalmol.2020.6239.
PubMed 33443542Saxena R, Vashist P, Tandon R, Pandey RM, Bhardawaj A, Menon V, Mani K. Prevalence of myopia and its risk factors in urban school children in Delhi: the North India Myopia Study (NIM Study). PLoS One. 2015 Feb 26;10(2):e0117349. doi: 10.1371/journal.pone.0117349. eCollection 2015.
PubMed 25719391He M, Xiang F, Zeng Y, Mai J, Chen Q, Zhang J, Smith W, Rose K, Morgan IG. Effect of Time Spent Outdoors at School on the Development of Myopia Among Children in China: A Randomized Clinical Trial. JAMA. 2015 Sep 15;314(11):1142-8. doi: 10.1001/jama.2015.10803.
PubMed 26372583Saw SM, Tong L, Chua WH, Chia KS, Koh D, Tan DT, Katz J. Incidence and progression of myopia in Singaporean school children. Invest Ophthalmol Vis Sci. 2005 Jan;46(1):51-7. doi: 10.1167/iovs.04-0565.
PubMed 15623754Thomson K, Game J, Karouta C, Morgan IG, Ashby R. Correlation between small-scale methylation changes and gene expression during the development of myopia. FASEB J. 2022 Jan;36(1):e22129. doi: 10.1096/fj.202101487R.
PubMed 34958689Hysi PG, Choquet H, Khawaja AP, Wojciechowski R, Tedja MS, Yin J, Simcoe MJ, Patasova K, Mahroo OA, Thai KK, Cumberland PM, Melles RB, Verhoeven VJM, Vitart V, Segre A, Stone RA, Wareham N, Hewitt AW, Mackey DA, Klaver CCW, MacGregor S; Consortium for Refractive Error and Myopia; Khaw PT, Foster PJ; UK Eye and Vision Consortium; Guggenheim JA; 23andMe Inc.; Rahi JS, Jorgenson E, Hammond CJ. Meta-analysis of 542,934 subjects of European ancestry identifies new genes and mechanisms predisposing to refractive error and myopia. Nat Genet. 2020 Apr;52(4):401-407. doi: 10.1038/s41588-020-0599-0. Epub 2020 Mar 30.
PubMed 32231278O'Donoghue L, Kapetanankis VV, McClelland JF, Logan NS, Owen CG, Saunders KJ, Rudnicka AR. Risk Factors for Childhood Myopia: Findings From the NICER Study. Invest Ophthalmol Vis Sci. 2015 Feb 5;56(3):1524-30. doi: 10.1167/iovs.14-15549.
PubMed 25655799Flitcroft DI, He M, Jonas JB, Jong M, Naidoo K, Ohno-Matsui K, Rahi J, Resnikoff S, Vitale S, Yannuzzi L. IMI - Defining and Classifying Myopia: A Proposed Set of Standards for Clinical and Epidemiologic Studies. Invest Ophthalmol Vis Sci. 2019 Feb 28;60(3):M20-M30. doi: 10.1167/iovs.18-25957.
PubMed 30817826Zadnik K, Sinnott LT, Cotter SA, Jones-Jordan LA, Kleinstein RN, Manny RE, Twelker JD, Mutti DO; Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study Group. Prediction of Juvenile-Onset Myopia. JAMA Ophthalmol. 2015 Jun;133(6):683-9. doi: 10.1001/jamaophthalmol.2015.0471.
PubMed 25837970Matsumura H, Hirai H. Prevalence of myopia and refractive changes in students from 3 to 17 years of age. Surv Ophthalmol. 1999 Oct;44 Suppl 1:S109-115. doi: 10.1016/s0039-6257(99)00094-6.
PubMed 10548123French AN, Morgan IG, Mitchell P, Rose KA. Risk factors for incident myopia in Australian schoolchildren: the Sydney adolescent vascular and eye study. Ophthalmology. 2013 Oct;120(10):2100-8. doi: 10.1016/j.ophtha.2013.02.035. Epub 2013 May 11.
PubMed 23672971Morgan IG, French AN, Ashby RS, Guo X, Ding X, He M, Rose KA. The epidemics of myopia: Aetiology and prevention. Prog Retin Eye Res. 2018 Jan;62:134-149. doi: 10.1016/j.preteyeres.2017.09.004. Epub 2017 Sep 23.
PubMed 28951126Cui Y, Zhang L, Zhang M, Yang X, Zhang L, Kuang J, Zhang G, Liu Q, Guo H, Meng Q. Prevalence and causes of low vision and blindness in a Chinese population with type 2 diabetes: the Dongguan Eye Study. Sci Rep. 2017 Sep 11;7(1):11195. doi: 10.1038/s41598-017-11365-z.
PubMed 28894238Iwase A, Araie M, Tomidokoro A, Yamamoto T, Shimizu H, Kitazawa Y; Tajimi Study Group. Prevalence and causes of low vision and blindness in a Japanese adult population: the Tajimi Study. Ophthalmology. 2006 Aug;113(8):1354-62. doi: 10.1016/j.ophtha.2006.04.022.
PubMed 16877074Wong TY, Ferreira A, Hughes R, Carter G, Mitchell P. Epidemiology and disease burden of pathologic myopia and myopic choroidal neovascularization: an evidence-based systematic review. Am J Ophthalmol. 2014 Jan;157(1):9-25.e12. doi: 10.1016/j.ajo.2013.08.010. Epub 2013 Oct 5.
PubMed 24099276
Study at a glance
From the registry record, last updated by the sponsor on 12 Jul 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Factors Influencing Physiological Hyperopia in Children: A Prospective Nested Case-control Study
- ClinicalTrials.gov ID
- NCT06498947
- Acronym / sponsor ID
- YH Jiao
- Conditions
- Myopia Progression
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 1,006 participants (estimated)
- Lead sponsor
- Beijing Tongren HospitalUniversity, hospital or other
- Study start
- 1 Jun 2024 (actual)
- Primary completion
- 1 Jan 2025 (estimated)
- Study completion
- 31 Dec 2026 (estimated)
- First posted
- 12 Jul 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The trend of myopia in children and its low age is a major social and public health problem in China. More seriously, retinopathy associated with high myopia has become the number one cause of irreversible blinding eye disease in adults in some parts of China. Physiological hyperopia has a protective effect on preventing the onset of myopia, and is one of the strongest predictors of myopia on its own, which is significant in curbing myopia from occurring at a younger age and preventing the development of high myopia before adulthood. However, it is not yet known how the physiological hyperopia changes in childhood, the stage at which the critical inflection point occurs, which key factors lead to the rapid fading of the physiological hyperopia and progression to myopia, and the strength of its effect. In the early stage of the study, the research group established a prospective cohort of preschoolers based on natural population sampling, which included a total of 2109 preschoolers aged 3-6 years from 22 kindergartens in a district in Beijing, and completed a 2-year follow-up, obtaining exploratory results on the changing pattern of physiological hyperopia and key influencing factors in younger children. The group will add new samples to the existing whole cohort sampling cohort and adopt the design scheme of prospective nested case-control study to determine the changing trend of fading trajectory of physiological hyperopia in school-age children, key inflection points and key risk factors, so as to provide new techniques for the prevention and control of childhood myopia.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Group A | – | Other: This study was observational with no intervention.Group A is defined as those whose physiological hyperopia (sphere+1/2 cylinder) of at least - 0.5 diopters(D) in either eye. |
| Group B | – | Other: This study was observational with no intervention.Group B is defined as whose physiological hyperopia exceeds 95% confidence interval for children of same age (Near Myopia). |
| Group C | – | Other: This study was observational with no intervention.Group C is defined as whose physiological hyperopia exceeds 90% confidence interval for children of same age. |
Who may qualify
- Ages
- 6 to 9 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- The research group has already sampled 3-6 years old preschool children from 22 kindergartens in Haidian District, Beijing, and included them in the baseline cohort, which has been followed up continuously for 3 years. The research group will continue to add new samples to the existing cluster sampling cohort and reorganize the cohort of children aged 6-9 years old to conduct this study.
Key inclusion criteria (3 listed)
- Children aged 6-9 years old, male or female;
- Good cooperation in examination;
- Parents cooperate and sign the informed consent form;
Key exclusion criteria (2 listed)
- Children with a history of drug allergy;
- Pediatric patients with heart disease, cranial trauma or epilepsy, Down syndrome, or glaucoma will be excluded from the cohort.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| This study was observational with no intervention.This study was observational with no intervention. | Other | Group A, Group B, Group C |
Primary outcome
myopia
Time frame: 1 year
Myopia in this study was defined as an equivalent spherical lens degree ( SER ) error (sphere+1/2 cylinder) of at least - 0.5 diopters(D) in either eye.
5 secondary outcomes
Myopia Prevalence
Time frame: 3 year
The change in ocular axis length
Time frame: 3 year
The change in anterior chamber depth
Time frame: 3 year
The change in corneal curvature
Time frame: 3 year
The change in the ratio of axial length to corneal curvature
Time frame: 3 year
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jul 2024.
- Results publication: PubMed 33443542Wang J, Li Y, Musch DC, Wei N, Qi X, Ding G, Li X, Li J, Song L, Zhang Y, Ning Y, Zeng X, Hua N, Li S, Qian X. Progression of Myopia in School-Aged Children After COVID-19 Home Confinement. JAMA Ophthalmol. 2021 Mar 1;139(3):293-300. doi: 10.1001/jamaophthalmol.2020.6239.
- Results publication: PubMed 25719391Saxena R, Vashist P, Tandon R, Pandey RM, Bhardawaj A, Menon V, Mani K. Prevalence of myopia and its risk factors in urban school children in Delhi: the North India Myopia Study (NIM Study). PLoS One. 2015 Feb 26;10(2):e0117349. doi: 10.1371/journal.pone.0117349. eCollection 2015.
- Results publication: PubMed 26372583He M, Xiang F, Zeng Y, Mai J, Chen Q, Zhang J, Smith W, Rose K, Morgan IG. Effect of Time Spent Outdoors at School on the Development of Myopia Among Children in China: A Randomized Clinical Trial. JAMA. 2015 Sep 15;314(11):1142-8. doi: 10.1001/jama.2015.10803.
- Results publication: PubMed 15623754Saw SM, Tong L, Chua WH, Chia KS, Koh D, Tan DT, Katz J. Incidence and progression of myopia in Singaporean school children. Invest Ophthalmol Vis Sci. 2005 Jan;46(1):51-7. doi: 10.1167/iovs.04-0565.
- Results publication: PubMed 34958689Thomson K, Game J, Karouta C, Morgan IG, Ashby R. Correlation between small-scale methylation changes and gene expression during the development of myopia. FASEB J. 2022 Jan;36(1):e22129. doi: 10.1096/fj.202101487R.
- Results publication: PubMed 32231278Hysi PG, Choquet H, Khawaja AP, Wojciechowski R, Tedja MS, Yin J, Simcoe MJ, Patasova K, Mahroo OA, Thai KK, Cumberland PM, Melles RB, Verhoeven VJM, Vitart V, Segre A, Stone RA, Wareham N, Hewitt AW, Mackey DA, Klaver CCW, MacGregor S; Consortium for Refractive Error and Myopia; Khaw PT, Foster PJ; UK Eye and Vision Consortium; Guggenheim JA; 23andMe Inc.; Rahi JS, Jorgenson E, Hammond CJ. Meta-analysis of 542,934 subjects of European ancestry identifies new genes and mechanisms predisposing to refractive error and myopia. Nat Genet. 2020 Apr;52(4):401-407. doi: 10.1038/s41588-020-0599-0. Epub 2020 Mar 30.
- Results publication: PubMed 25655799O'Donoghue L, Kapetanankis VV, McClelland JF, Logan NS, Owen CG, Saunders KJ, Rudnicka AR. Risk Factors for Childhood Myopia: Findings From the NICER Study. Invest Ophthalmol Vis Sci. 2015 Feb 5;56(3):1524-30. doi: 10.1167/iovs.14-15549.
- Results publication: PubMed 30817826Flitcroft DI, He M, Jonas JB, Jong M, Naidoo K, Ohno-Matsui K, Rahi J, Resnikoff S, Vitale S, Yannuzzi L. IMI - Defining and Classifying Myopia: A Proposed Set of Standards for Clinical and Epidemiologic Studies. Invest Ophthalmol Vis Sci. 2019 Feb 28;60(3):M20-M30. doi: 10.1167/iovs.18-25957.
- Results publication: PubMed 25837970Zadnik K, Sinnott LT, Cotter SA, Jones-Jordan LA, Kleinstein RN, Manny RE, Twelker JD, Mutti DO; Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study Group. Prediction of Juvenile-Onset Myopia. JAMA Ophthalmol. 2015 Jun;133(6):683-9. doi: 10.1001/jamaophthalmol.2015.0471.
- Results publication: PubMed 10548123Matsumura H, Hirai H. Prevalence of myopia and refractive changes in students from 3 to 17 years of age. Surv Ophthalmol. 1999 Oct;44 Suppl 1:S109-115. doi: 10.1016/s0039-6257(99)00094-6.
- Results publication: PubMed 23672971French AN, Morgan IG, Mitchell P, Rose KA. Risk factors for incident myopia in Australian schoolchildren: the Sydney adolescent vascular and eye study. Ophthalmology. 2013 Oct;120(10):2100-8. doi: 10.1016/j.ophtha.2013.02.035. Epub 2013 May 11.
- Results publication: PubMed 28951126Morgan IG, French AN, Ashby RS, Guo X, Ding X, He M, Rose KA. The epidemics of myopia: Aetiology and prevention. Prog Retin Eye Res. 2018 Jan;62:134-149. doi: 10.1016/j.preteyeres.2017.09.004. Epub 2017 Sep 23.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Myopia Progression, run by Beijing Tongren Hospital at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 12 Jul 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Huaying Xu, MD (18813072901, xuhuaying99@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
myopia (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06498947, which also lists 17 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jul 2024.