Myopia.

Increasing Prevalence of Myopia in Europe and the Impact of Education. Ophthalmology (2015) 2.19

Human PrimPol mutation associated with high myopia has a DNA replication defect. Nucleic Acids Res (2014) 2.12

Effect of providing free glasses on children's educational outcomes in China: cluster randomized controlled trial. BMJ (2014) 1.51

Childhood febrile illness and the risk of myopia in UK Biobank participants. Eye (Lond) (2016) 1.50

Orthokeratology to control myopia progression: a meta-analysis. PLoS One (2015) 1.46

Association of peripheral hyperopia with axial elongation in high myopia. Graefes Arch Clin Exp Ophthalmol (2013) 1.07

Refractive error, visual acuity and causes of vision loss in children in Shandong, China. The Shandong Children Eye Study. PLoS One (2013) 1.07

Exome sequencing reveals CCDC111 mutation associated with high myopia. Hum Genet (2013) 1.07

Histological changes of high axial myopia. Eye (Lond) (2013) 1.06

Prevalence and associated factors of myopia in high-school students in Beijing. PLoS One (2015) 1.01

Racial variations in the prevalence of refractive errors in the United States: the multi-ethnic study of atherosclerosis. Am J Ophthalmol (2013) 1.01

Effect of outdoor activity on myopia onset and progression in school-aged children in northeast China: the Sujiatun Eye Care Study. BMC Ophthalmol (2015) 1.01

Mutations in SCO2 are associated with autosomal-dominant high-grade myopia. Am J Hum Genet (2013) 0.99

Five year nationwide incidence of rhegmatogenous retinal detachment requiring surgery in Korea. PLoS One (2013) 0.98

Prevalence and risk factors for refractive errors: Korean National Health and Nutrition Examination Survey 2008-2011. PLoS One (2013) 0.96

Mutations in LRPAP1 are associated with severe myopia in humans. Am J Hum Genet (2013) 0.96

Pharmacology of myopia and potential role for intrinsic retinal circadian rhythms. Exp Eye Res (2013) 0.95

Myopic shift and outdoor activity among primary school children: one-year follow-up study in Beijing. PLoS One (2013) 0.95

Myopia stabilization and associated factors among participants in the Correction of Myopia Evaluation Trial (COMET). Invest Ophthalmol Vis Sci (2013) 0.93

Generational difference of refractive error in the baseline study of the Beijing Myopia Progression Study. Br J Ophthalmol (2013) 0.92

Myopia: the evidence for environmental factors. Environ Health Perspect (2014) 0.90

Near Work Related Parameters and Myopia in Chinese Children: the Anyang Childhood Eye Study. PLoS One (2015) 0.90

Global variations and time trends in the prevalence of childhood myopia, a systematic review and quantitative meta-analysis: implications for aetiology and early prevention. Br J Ophthalmol (2016) 0.89

Education influences the association between genetic variants and refractive error: a meta-analysis of five Singapore studies. Hum Mol Genet (2013) 0.88

[Ophthalmological aspects of the Gutenberg Health Study (GHS): an interdisciplinary prospective population-based cohort study]. Ophthalmologe (2013) 0.87

Advances in the genomics of common eye diseases. Hum Mol Genet (2013) 0.87

Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study. Am J Ophthalmol (2014) 0.87

Prevalence and causes of visual impairment and rate of wearing spectacles in schools for children of migrant workers in Shanghai, China. BMC Public Health (2014) 0.86

The relationship between anisometropia and amblyopia. Prog Retin Eye Res (2013) 0.85

The ophthalmic branch of the Gutenberg Health Study: study design, cohort profile and self-reported diseases. PLoS One (2015) 0.85

Choroidal thickness and biometric markers for the screening of lacquer cracks in patients with high myopia. PLoS One (2013) 0.84

Association between lumican gene -1554 T/C polymorphism and high myopia in Asian population: a meta-analysis. Int J Ophthalmol (2013) 0.83

Rhegmatogenous retinal detachment--an ophthalmologic emergency. Dtsch Arztebl Int (2014) 0.82

SLC39A5 mutations interfering with the BMP/TGF-β pathway in non-syndromic high myopia. J Med Genet (2014) 0.82

Exposure to sunlight reduces the risk of myopia in rhesus monkeys. PLoS One (2015) 0.81

Risk Factors of Myopic Shift among Primary School Children in Beijing, China: A Prospective Study. Int J Med Sci (2015) 0.81

Correlation of discoloration and biomechanical properties in porcine sclera induced by genipin. Int J Ophthalmol (2014) 0.81

Refractive errors in 3-6 year-old Chinese children: a very low prevalence of myopia? PLoS One (2013) 0.81

Prevalence of myopia and its risk factors in urban school children in Delhi: the North India Myopia Study (NIM Study). PLoS One (2015) 0.81

The efficacy and safety of modified Snyder-Thompson posterior scleral reinforcement in extensive high myopia of Chinese children. Graefes Arch Clin Exp Ophthalmol (2013) 0.81

RPE and Choroid Mechanisms Underlying Ocular Growth and Myopia. Prog Mol Biol Transl Sci (2015) 0.80

Form-deprivation myopia induces decreased expression of bone morphogenetic protein-2, 5 in guinea pig sclera. Int J Ophthalmol (2015) 0.80

Prevalence of vision impairment and refractive error in school children in Ba Ria - Vung Tau province, Vietnam. Clin Experiment Ophthalmol (2014) 0.80

Muscarinic cholinergic receptor (M2) plays a crucial role in the development of myopia in mice. Dis Model Mech (2013) 0.80

Scleral and choroidal volume in relation to axial length in infants with retinoblastoma versus adults with malignant melanomas or end-stage glaucoma. Graefes Arch Clin Exp Ophthalmol (2016) 0.80

Assumption-free estimation of the genetic contribution to refractive error across childhood. Mol Vis (2015) 0.79

Effects of imposed defocus of opposite sign on temporal gene expression patterns of BMP4 and BMP7 in chick RPE. Exp Eye Res (2013) 0.79

Efficacy of Chinese eye exercises on reducing accommodative lag in school-aged children: a randomized controlled trial. PLoS One (2015) 0.79

Birth order and myopia: what are the messages to readers? Ophthalmic Epidemiol (2013) 0.79

Axial length/corneal radius ratio: association with refractive state and role on myopia detection combined with visual acuity in Chinese schoolchildren. PLoS One (2015) 0.79

Prevalence and associated factors of myopia among primary and middle school-aged students: a school-based study in Guangzhou. Eye (Lond) (2016) 0.79

The association of TGFB1 genetic polymorphisms with high myopia: a systematic review and meta-analysis. Int J Clin Exp Med (2015) 0.79

Effect of pupil size on higher-order aberrations in high-myopic pseudophakic eyes with posterior staphyloma. Eye (Lond) (2014) 0.79

Serum 25-hydroxyvitamin D level is associated with myopia in the Korea national health and nutrition examination survey. Medicine (Baltimore) (2016) 0.78

Five-Year Progression of Refractive Errors and Incidence of Myopia in School-Aged Children in Western China. J Epidemiol (2016) 0.78

Corneal thickness, epithelial thickness and axial length differences in normal and high myopia. BMC Ophthalmol (2015) 0.78

The relationship of season of birth with refractive error in very young children in eastern China. PLoS One (2014) 0.78

Posterior scleral reinforcement for the treatment of pathological myopia. Int J Ophthalmol (2016) 0.78

Disordered sleep and myopia risk among Chinese children. PLoS One (2015) 0.78

Scleral cross section area and volume and axial length. PLoS One (2014) 0.78

Glaucomatous-Type Optic Discs in High Myopia. PLoS One (2015) 0.78

Effect of pathological myopia on biomechanical properties: a study by ocular response analyzer. Int J Ophthalmol (2015) 0.78

Meta-analysis of gene-environment-wide association scans accounting for education level identifies additional loci for refractive error. Nat Commun (2016) 0.78

Is myopia a public health problem in India? Indian J Community Med (2013) 0.78

Amphiregulin Antibody and Reduction of Axial Elongation in Experimental Myopia. EBioMedicine (2017) 0.78

Pre- and Postcycloplegic Refractions in Children and Adolescents. PLoS One (2016) 0.78

Prevalence of Myopia in France: A Cross-Sectional Analysis. Medicine (Baltimore) (2015) 0.77

Frequency and Distribution of Refractive Error in Adult Life: Methodology and Findings of the UK Biobank Study. PLoS One (2015) 0.77

Effect of low-addition soft contact lenses with decentered optical design on myopia progression in children: a pilot study. Clin Ophthalmol (2014) 0.77

Childhood gene-environment interactions and age-dependent effects of genetic variants associated with refractive error and myopia: The CREAM Consortium. Sci Rep (2016) 0.77

Effect of undercorrection on myopia progression in 12-year-old children. Graefes Arch Clin Exp Ophthalmol (2015) 0.77

The sonic hedgehog signaling pathway induces myopic development by activating matrix metalloproteinase (MMP)-2 in Guinea pigs. PLoS One (2014) 0.77

Static characteristics and dynamic functionality of retinal vessels in longer eyes with or without pathologic myopia. Graefes Arch Clin Exp Ophthalmol (2015) 0.77

[Secondary diseases in high myopia]. Ophthalmologe (2016) 0.77

Quantification of the efficacy of collagen cross-linking agents to induce stiffening of rat sclera. J R Soc Interface (2017) 0.76

Education-Related Parameters in High Myopia: Adults versus School Children. PLoS One (2016) 0.76

Iris color and associated pathological ocular complications: a review of epidemiologic studies. Int J Ophthalmol (2014) 0.76

Severe anisometropic myopia in identical twins. Middle East Afr J Ophthalmol (2014) 0.76

Gene expression changes under cyclic mechanical stretching in rat retinal glial (Müller) cells. PLoS One (2013) 0.76

Citicoline retards myopia progression following form deprivation in guinea pigs. Exp Biol Med (Maywood) (2016) 0.76

Role of Chronic Inflammation in Myopia Progression: Clinical Evidence and Experimental Validation. EBioMedicine (2016) 0.75

Multimodal imaging including spectral-domain optical coherence tomography and confocal near-infrared reflectance for characterization of lacquer cracks in highly myopic eyes. Eye (Lond) (2014) 0.75

Role of Educational Exposure in the Association Between Myopia and Birth Order. JAMA Ophthalmol (2015) 0.75

Accuracy of Intraocular Lens Power Formulas Involving 148 Eyes with Long Axial Lengths: A Retrospective Chart-Review Study. J Ophthalmol (2015) 0.75

Progression of lower and higher-order aberrations: a longitudinal study. BMC Ophthalmol (2015) 0.75

Controversial opinion: evaluation of EGR1 and LAMA2 loci for high myopia in Chinese populations. J Zhejiang Univ Sci B (2016) 0.75

Acupuncture for adolescents with mild-to-moderate myopia: study protocol for a randomized controlled trial. Trials (2014) 0.75

Bidirectional Expression of Metabolic, Structural, and Immune Pathways in Early Myopia and Hyperopia. Front Neurosci (2016) 0.75

Decreased sleep quality in high myopia children. Sci Rep (2016) 0.75

Seasonal variations in the progression of myopia in children enrolled in the correction of myopia evaluation trial. Invest Ophthalmol Vis Sci (2014) 0.75

Patterns in longitudinal growth of refraction in Southern Chinese children: cluster and principal component analysis. Sci Rep (2016) 0.75

Macular Thickness Assessed with Optical Coherence Tomography in Young Chinese Myopic Patients. J Ophthalmol (2015) 0.75

A Head-Mounted Spectacle Frame for the Study of Mouse Lens-Induced Myopia. J Ophthalmol (2016) 0.75

The effect of the Chinese Cultural Revolution and Great Leap Forward on the prevalence of myopia. Eur J Epidemiol (2013) 0.75

Hyperopic shift in refraction in adults with aging. Graefes Arch Clin Exp Ophthalmol (2013) 0.75

Polymorphism in the RASGRF1 gene with high myopia: A meta-analysis. Mol Vis (2015) 0.75

Opposing effects of atropine and timolol on the color and luminance emmetropization mechanisms in chicks. Vision Res (2016) 0.75

A systematic review and meta-analysis comparing intravitreal ranibizumab with bevacizumab for the treatment of myopic choroidal neovascularisation. Saudi J Ophthalmol (2014) 0.75

Housing type and myopia: the mediating role of parental myopia. BMC Ophthalmol (2016) 0.75

Ganglion Cell-Inner Plexiform Layer, Peripapillary Retinal Nerve Fiber Layer, and Macular Thickness in Eyes with Myopic β-Zone Parapapillary Atrophy. J Ophthalmol (2016) 0.75

Meta-analysis identifies common variants associated with body mass index in east Asians. Nat Genet (2012) 2.70

Worldwide prevalence and risk factors for myopia. Ophthalmic Physiol Opt (2012) 2.47

Prevalence and characteristics of foveal retinal detachment without macular hole in high myopia. Am J Ophthalmol (2003) 2.47

Genome-wide meta-analyses of multiancestry cohorts identify multiple new susceptibility loci for refractive error and myopia. Nat Genet (2013) 2.36

Changes of axial length measured by IOL master during 2 years in eyes of adults with pathologic myopia. Graefes Arch Clin Exp Ophthalmol (2012) 2.08

Role of near work in myopia: findings in a sample of Australian school children. Invest Ophthalmol Vis Sci (2008) 2.04

An outbreak of Fusarium keratitis associated with contact lens wear in Singapore. JAMA (2006) 1.98

New loci associated with birth weight identify genetic links between intrauterine growth and adult height and metabolism. Nat Genet (2012) 1.90

Myopic choroidal neovascularization: a 10-year follow-up. Ophthalmology (2003) 1.78

Comparative analyses of seven algorithms for copy number variant identification from single nucleotide polymorphism arrays. Nucleic Acids Res (2010) 1.77

Myopia, lifestyle, and schooling in students of Chinese ethnicity in Singapore and Sydney. Arch Ophthalmol (2008) 1.68

Myopia-related optic disc and retinal changes in adolescent children from singapore. Ophthalmology (2011) 1.68

Rationale and methodology for a population-based study of eye diseases in Malay people: The Singapore Malay eye study (SiMES). Ophthalmic Epidemiol (2007) 1.68

Testability of vision and refraction in preschoolers: the strabismus, amblyopia, and refractive error study in singaporean children. Am J Ophthalmol (2009) 1.65

Prevalence of and racial differences in pterygium: a multiethnic population study in Asians. Ophthalmology (2012) 1.63

Distribution and determinants of ocular biometric parameters in an Asian population: the Singapore Malay eye study. Invest Ophthalmol Vis Sci (2009) 1.62

The potential role of amyloid beta in the pathogenesis of age-related macular degeneration. J Clin Invest (2005) 1.56

A cluster randomized controlled trial of an incentive-based outdoor physical activity program. J Pediatr (2013) 1.56

Collagen-related genes influence the glaucoma risk factor, central corneal thickness. Hum Mol Genet (2010) 1.52

Long-term pattern of progression of myopic maculopathy: a natural history study. Ophthalmology (2010) 1.51

Prevalence of refractive error in Singaporean Chinese children: the strabismus, amblyopia, and refractive error in young Singaporean Children (STARS) study. Invest Ophthalmol Vis Sci (2009) 1.48

Genome-wide association studies reveal genetic variants in CTNND2 for high myopia in Singapore Chinese. Ophthalmology (2010) 1.44

Analgesic effect of supplemental intracameral lidocaine during phacoemulsification under topical anaesthesia: a randomised controlled trial. Br J Ophthalmol (2010) 1.44

COMT haplotypes modulate associations of antenatal maternal anxiety and neonatal cortical morphology. Am J Psychiatry (2014) 1.43

A genome-wide association analysis identified a novel susceptible locus for pathological myopia at 11q24.1. PLoS Genet (2009) 1.43

Peripheral artery disease and glaucoma: the singapore malay eye study. Arch Ophthalmol (2009) 1.42

Prevalence of amblyopia and strabismus in young singaporean chinese children. Invest Ophthalmol Vis Sci (2010) 1.42

Natural course of macular retinoschisis in highly myopic eyes without macular hole or retinal detachment. Am J Ophthalmol (2006) 1.38

Characteristics of peripapillary detachment in pathologic myopia. Arch Ophthalmol (2006) 1.34

Evaluation of peripapillary intrachoroidal cavitation with swept source and enhanced depth imaging optical coherence tomography. Retina (2012) 1.32

Comparison of central corneal thickness measurements by visante anterior segment optical coherence tomography with ultrasound pachymetry. Am J Ophthalmol (2007) 1.31

Clinical characteristics of posterior staphyloma in eyes with pathologic myopia. Am J Ophthalmol (2008) 1.30

Genome-wide association studies in Asians confirm the involvement of ATOH7 and TGFBR3, and further identify CARD10 as a novel locus influencing optic disc area. Hum Mol Genet (2011) 1.29

Long-term visual prognosis of choroidal neovascularization in high myopia: a comparison between age groups. Ophthalmology (2002) 1.29

Prevalence and causes of visual impairment and blindness in an urban Indian population: the Singapore Indian Eye Study. Ophthalmology (2011) 1.27

Evidence of retinal vascular narrowing in glaucomatous eyes in an Asian population. Invest Ophthalmol Vis Sci (2008) 1.27

Determinants of ganglion cell-inner plexiform layer thickness measured by high-definition optical coherence tomography. Invest Ophthalmol Vis Sci (2012) 1.26

Cornea biomechanical characteristics and their correlates with refractive error in Singaporean children. Invest Ophthalmol Vis Sci (2008) 1.25

The age of menopause and the menopause transition in a multiracial population: a nation-wide Singapore study. Maturitas (2005) 1.23

Candidate gene association study for diabetic retinopathy in persons with type 2 diabetes: the Candidate gene Association Resource (CARe). Invest Ophthalmol Vis Sci (2011) 1.22

Peripapillary changes detected by optical coherence tomography in eyes with high myopia. Ophthalmology (2007) 1.21

Detection of paravascular lamellar holes and other paravascular abnormalities by optical coherence tomography in eyes with high myopia. Ophthalmology (2007) 1.21

Prevalence and risk factors for refractive errors in Indians: the Singapore Indian Eye Study (SINDI). Invest Ophthalmol Vis Sci (2011) 1.20

Family history, near work, outdoor activity, and myopia in Singapore Chinese preschool children. Br J Ophthalmol (2010) 1.19

Refractive error, axial dimensions, and primary open-angle glaucoma: the Singapore Malay Eye Study. Arch Ophthalmol (2010) 1.19

Natural course of myopic traction maculopathy and factors associated with progression or resolution. Am J Ophthalmol (2013) 1.18

Genetic variants on chromosome 1q41 influence ocular axial length and high myopia. PLoS Genet (2012) 1.17

Visual experience during phacoemulsification under topical versus retrobulbar anesthesia: results of a prospective, randomized, controlled trial. Am J Ophthalmol (2004) 1.17

The prevalence and types of glaucoma in malay people: the Singapore Malay eye study. Invest Ophthalmol Vis Sci (2008) 1.15

Prevalence of refractive errors in a multiethnic Asian population: the Singapore epidemiology of eye disease study. Invest Ophthalmol Vis Sci (2013) 1.14

Corneal thickness determination and correlates in Singaporean schoolchildren. Invest Ophthalmol Vis Sci (2004) 1.14

Prevalence and causes of low vision and blindness in an urban malay population: the Singapore Malay Eye Study. Arch Ophthalmol (2008) 1.13

Diabetes, hyperglycemia, and central corneal thickness: the Singapore Malay Eye Study. Ophthalmology (2007) 1.13

Long-term changes in axial length in adult eyes with pathologic myopia. Am J Ophthalmol (2010) 1.12

Application of advanced statistics in ophthalmology. Invest Ophthalmol Vis Sci (2011) 1.11

Determinants of corneal biomechanical properties in an adult Chinese population. Ophthalmology (2011) 1.10

Choroidal neovascularization in pathological myopia. Prog Retin Eye Res (2012) 1.10

Prevalence rates and epidemiological risk factors for astigmatism in Singapore school children. Optom Vis Sci (2002) 1.10

Large scale international replication and meta-analysis study confirms association of the 15q14 locus with myopia. The CREAM consortium. Hum Genet (2012) 1.09

Fundus characteristics of high myopia in children. Jpn J Ophthalmol (2005) 1.08

Visual impairment and its impact on health-related quality of life in adolescents. Am J Ophthalmol (2008) 1.06

Nine loci for ocular axial length identified through genome-wide association studies, including shared loci with refractive error. Am J Hum Genet (2013) 1.06

Topographic analyses of shape of eyes with pathologic myopia by high-resolution three-dimensional magnetic resonance imaging. Ophthalmology (2011) 1.06

Smoking, cardiovascular risk factors, and age-related macular degeneration in Asians: the Singapore Malay Eye Study. Am J Ophthalmol (2008) 1.05

Prevalence of age-related macular degeneration in a Malay population: the Singapore Malay Eye Study. Ophthalmology (2008) 1.04

Comparisons of the handheld autorefractor, table-mounted autorefractor, and subjective refraction in Singapore adults. Optom Vis Sci (2005) 1.04

Sensitivity and specificity of visual acuity screening for refractive errors in school children. Optom Vis Sci (2002) 1.04

Repeatability of IOLMaster biometry in children. Optom Vis Sci (2004) 1.04

Characteristics of patients with a favorable natural course of myopic choroidal neovascularization. Graefes Arch Clin Exp Ophthalmol (2004) 1.04

The impact of corrected and uncorrected refractive error on visual functioning: the Singapore Malay Eye Study. Invest Ophthalmol Vis Sci (2009) 1.03

Prevalence of refractive errors in teenage high school students in Singapore. Ophthalmic Physiol Opt (2004) 1.02

Fundus autofluorescence patterns in eyes with primary intraocular lymphoma. Retina (2010) 1.02

Myopia-related fundus changes in Singapore adults with high myopia. Am J Ophthalmol (2013) 1.02

Racial variations in the prevalence of refractive errors in the United States: the multi-ethnic study of atherosclerosis. Am J Ophthalmol (2013) 1.01

Retromode retinal imaging of macular retinoschisis in highly myopic eyes. Am J Ophthalmol (2010) 1.01

Comparison of visual outcome and regression pattern of myopic choroidal neovascularization after intravitreal bevacizumab or after photodynamic therapy. Am J Ophthalmol (2009) 1.00

Fovea-sparing internal limiting membrane peeling for myopic traction maculopathy. Am J Ophthalmol (2012) 1.00

Amyloid-beta up-regulates complement factor B in retinal pigment epithelial cells through cytokines released from recruited macrophages/microglia: Another mechanism of complement activation in age-related macular degeneration. J Cell Physiol (2009) 0.99

Mutations in SCO2 are associated with autosomal-dominant high-grade myopia. Am J Hum Genet (2013) 0.99

Myopia, axial length, and OCT characteristics of the macula in Singaporean children. Invest Ophthalmol Vis Sci (2006) 0.99

Absence of association between COL1A1 polymorphisms and high myopia in the Japanese population. Invest Ophthalmol Vis Sci (2008) 0.99

Comparison of nylon monofilament suture and polytetrafluoroethylene sheet for frontalis suspension surgery in eyes with congenital ptosis. Am J Ophthalmol (2013) 0.98

Ocular component growth curves among Singaporean children with different refractive error status. Invest Ophthalmol Vis Sci (2009) 0.98

Two-year outcomes of intravitreal bevacizumab for choroidal neovascularization in Japanese patients with pathologic myopia. Retina (2012) 0.97

The influence of birth size on intelligence in healthy children. Pediatrics (2009) 0.97

Spectral-domain optical coherence tomography findings in pediatric tilted disc syndrome. Graefes Arch Clin Exp Ophthalmol (2014) 0.97

Central corneal thickness and its associations with ocular and systemic factors: the Singapore Malay Eye Study. Am J Ophthalmol (2009) 0.96

Identification of four novel variants that influence central corneal thickness in multi-ethnic Asian populations. Hum Mol Genet (2011) 0.96

Reduction of retinal blood flow in high myopia. Graefes Arch Clin Exp Ophthalmol (2004) 0.96

Visual acuity and mortality in a chinese population. The Tanjong Pagar Study. Ophthalmology (2007) 0.96

Autofluorescence of metastatic choroidal tumor. Int Ophthalmol (2008) 0.95

Association of 15q14 and 15q25 with high myopia in Japanese. Invest Ophthalmol Vis Sci (2011) 0.95

Association between breastfeeding and likelihood of myopia in children. JAMA (2005) 0.95

Impact of diabetic retinopathy on vision-specific function. Ophthalmology (2010) 0.95

Photodynamic therapy with verteporfin for choroidal neovascularization of pathologic myopia in Japanese patients: comparison with nontreated controls. Am J Ophthalmol (2008) 0.95

A cluster randomised controlled trial evaluating an incentive-based outdoor physical activity programme to increase outdoor time and prevent myopia in children. Ophthalmic Physiol Opt (2014) 0.94