scholarly journals Age-dependent Distribution of Astigmatism and its Component in Chinese Preschool Children

2019 ◽  
Author(s):  
Minjie Chen ◽  
Jinhui Dai ◽  
Xinghuai Sun
Keyword(s):  
Preschool Children ◽  
Axial Length ◽  
Negative Relationship ◽  
Cross Sectional Study ◽  
Corneal Astigmatism ◽  
Axial Distribution ◽  
Cross Sectional ◽  
Ocular Biometry ◽  
Age Dependent ◽  
Vector Difference

Abstract Background: There is an compensatory effect between corneal astigmatism (CA) and internal astigmatism (IA). And the refractive astigmatism (RA) decreased fast in the early 3 years. Nevertheless, little attention was paid to the change in astigmatism in preschool children. Thus, we aimed to investigate the age-dependent distribution of astigmatism and its component in Chinese preschool children from year 3 to year 6 and also, to study the relationship between ocular biometry and IA. Methods: Automated refraction, keratometry and axial length (AL) were performed in this cross-sectional study. The IA was determined as the vector difference between RA and CA. The magnitude and type (with-the-rule WTR, against-the-rule ATR, oblique) of RA, CA and IA were investigated according to the age. Spearman correlation was adopted to detect the factors that may influence IA. Results: A total of 2315 subjects (2315 right eyes) (47.38% female) with a mean age of 4.52±0.88 years (range 3-6 years) were included. The magnitude and the ratio of three kinds of CA components did not change with aging (p=0.1233 and p>0.1, respectively). Though the axial distribution of RA remained unchanged with aging, a significant reduction in RA was seen in year 6 compared to that of year 3 and year 4 (p=0.036 and 0.041, respectively). Conversely，the ATR component in IA was lower in year 6 (68.02%) than it in year 3 (81.92%) and year 4 (77.12%) (both p<0.001) accompanied by increased frequency of oblique astigmatism in year 6 than it in year 3 and year 4 (p<0.001 and p=0.012,respectively). Negative relationship was found between IA and AL. Conclusion: RA decreased from year 3 to year 6. The shift of the axis in IA from ATR to Oblique and WTR may account for the reduction in RA. Eyes with shorter AL had larger IA. Keywords: Internal astigmatism; corneal astigmatism; axial length; with-the-rule.

scholarly journals Effect Of Trabeculectomy On Ocular Biometry And Refractive Errors In Pediatric Glaucoma

2021 ◽  
Vol 17 (29) ◽  
pp. 291
Author(s):  
Nouhoum Guirou ◽  
Youssouf Dembélé ◽  
Abdoulaye Napo ◽  
Théra Japhet ◽  
Drissa Moriba Coulibaly ◽  
...  
Keyword(s):  
Axial Length ◽  
Positive Impact ◽  
Cross Sectional Study ◽  
Refractive Errors ◽  
Short Term ◽  
Cross Sectional ◽  
Pediatric Glaucoma ◽  
Ocular Biometry ◽  
The Mean ◽  
Corneal Diameter

Background: Pediatric glaucoma triggers refractive errors by modifying the biometry of the eye. This study was conducted with the objective of estimating the short-term biometric and refractive changes prior to and post trabeculectomy in pediatric glaucoma. Material and Methods: A 12-month, descriptive, cross-sectional study was carried out from January to December 2019, using patients operated on for pediatric glaucoma. Pre- and post-operative biometric and refraction measurements were noted. Visual acuity, axial length, corneal diameter and refraction were obtained. All ethical requirements (anonymity, free, informed, and continuous consent) were satisfied. Data analysis was done using SPSS 20.0. Results: In the present study, 47 eyes of 27 patients were surgically operated upon, from January 2019 to December 2019 at CHU-IOTA. The predominant sex was male (17 patients) at 63%, giving a sex ratio (M / F) of 1.7. The mean age was 5.04 ± 4.24. Preoperatively, the mean corneal diameter, and D90 were respectively 13.83 ± 1.51 and 12.55 ± 0.99. Preoperatively, the mean axial length, and D90, were 23.87 ± 1.29 and 22.28 ± 1.07, respectively. Preoperatively and at three month, the mean myopia (n = 36), were respectively -3.13 ± 1.83 and -1.59 ± 0.97. The mean preoperative astigmatism (n = 47) and D90 were respectively, -1.59 ± 0.77 and -1.23 ± 0.57. A statistically significant relationship (p <0.05) was found to exist between the preoperative and postoperative data of the axial length, corneal diameter, and refractive errors. Conclusions: Trabeculectomy significantly exerts a short-term positive impact on the biometrics and refraction by modifying the initial measurements and diopters. 

scholarly journals Refraction and Ocular Biometry of Preschool Children in Shanghai, China

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Luoli Zhang ◽  
Xiangui He ◽  
Xiaomei Qu ◽  
Xiaofang You ◽  
Bingjie Wang ◽  
...  
Keyword(s):  
Preschool Children ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Ocular Biometry ◽  
School Based ◽  
Biometric Measurements ◽  
The Mean ◽  
Low Prevalence ◽  
Spearman’S Correlation

Purpose. To investigate the refraction and ocular biometry characteristics and to examine the prevalence of refractive errors in preschool children aged 3 to 6 years in Shanghai, China. Methods. A school-based cross-sectional study was conducted in Jiading and Xuhui District, Shanghai, in 2013. We randomly selected 7 kindergartens in Jiading District and 10 kindergartens in Xuhui District, with a probability proportionate to size. The children underwent comprehensive eye examinations, including cycloplegic refraction and biometric measurements. Myopia, hyperopia, astigmatism were defined as spherical equivalent (SE) ≤ −0.50 D, SE ≥ +2.00 D, and cylindrical diopters ≤ −1.00 D. Results. The mean SE for 3- to 6-year-old children was +1.20 D (standard deviation [SD] 1.05), and the mean axial length (AL) was 22.29 mm (SD 0.73). The overall prevalence of myopia and astigmatism was 3.7% and 18.3%, respectively. No difference in prevalence of astigmatism was found across age groups. There was a statistically significant association between lower cylindrical diopters and higher spherical diopters (Spearman’s correlation: −0.21, P<0.001). Conclusion. Chinese children aged 3 to 6 years in the Shanghai area were mostly mildly hyperopic, with a low prevalence of myopia. Refractive astigmatism for children may be relatively stable throughout the preschool stage. Astigmatism was significantly associated with refractive error.

scholarly journals Refraction in Preschool Children in Kazanlak, Bulgaria

Folia Medica ◽  
2020 ◽  
Vol 62 (2) ◽  
pp. 345-351
Author(s):  
Kiril Slaveykov ◽  
Kalina Trifonova
Keyword(s):  
Preschool Children ◽  
Refractive Error ◽  
Axial Length ◽  
Cross Sectional Study ◽  
Spherical Equivalent ◽  
Sectional Study ◽  
Cross Sectional ◽  
Refractive State ◽  
Myopic Shift ◽  
The City

Introduction: The refractive state of the eye changes as the eye&rsquo;s axial length increases and the cornea and lens flatten. In general, eyes are hyperopic at birth, become slightly more hyperopic until the age of 7, which at this point we see a myopic shift toward plano until the eyes reach their adult dimensions, usually by about the age 16. Aim: To determine the prevalence of refractive error in preschool children aged 3 - 6 in the city of Kazanlak, Bulgaria. Materials and methods: A cross-sectional study was conducted in a kindergarten based school within the city of Kazanlak, Bul&shy;garia. Out of 15 kindergarten schools, 10 chose to participate in the study. The children underwent non-mydriatic refraction screening using a Plus-Optix S12&#1089; mobile camera. Myopia, hyperopia and astigmatism were defined as being a spherical equivalent (SE) &le; &minus;0.50 D, SE &ge; +2.00 D and cylindrical diopters &le; &minus;1.00 D. Results: A total of 596 children were screened. Out of these 596 children; 526 were with ametropia (470 hypermetropia, 46 myopia) and 50 had astigmatism. Strabismus was found in 12 children, with a further 8 children suffering from amblyopia and finally 8 children were also found to be diagnosed with anisometropia. In 8 cases there were no results due to opacities or due to the small size of the pupil. Conclusion: The prevalence of refractive error in preschool children is similar to that found in other research in the field. While most cases fall into the category of emmetropia or mild hypermetropia, most of the children had never been to an ophthalmologist. A manda&shy;tory checkup should be issued for all children below the age of seven.

Malocclusion traits and sucking habits in preschool children: a cross-sectional study

2018 ◽  
Vol 3 (3) ◽  
pp. 67-74
Author(s):  
Carla MASSIGNAN ◽  
Júlia Gonçalves Dos SANTOS ◽  
Marcos XIMENES ◽  
Mariane CARDOSO ◽  
Michele BOLAN
Keyword(s):  
Preschool Children ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional

scholarly journals Association between socioeconomic status and dental caries among Chinese preschool children: a cross-sectional national study

BMJ Open ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. e042908
Author(s):  
Tingting Zhang ◽  
Jialan Hong ◽  
Xueting Yu ◽  
Qiulin Liu ◽  
Andi Li ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Preschool Children ◽  
Oral Health ◽  
Dental Caries ◽  
Household Income ◽  
Parental Education ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Index Of Inequality

ObjectivesSocioeconomic inequalities in oral health are often neglected in oral health promotion. This cross-sectional study assessed the association between dental caries and socioeconomic status (SES) among preschool children in China.DesignCross-sectional study.SettingData from the Fourth National Oral Health Survey of China (2015), comprising of 40 360 children aged 3–5 years was used.MethodsDental caries indicators including prevalence of dental caries, dental pain experience and number of decayed, missing and filling teeth (dmft). SES indicators included parental education and household income. The associations between SES and dental caries were analysed by using negative binomial regression or Poisson regression models according to data distribution. Relative and absolute inequalities in dental caries were quantified by using the Relative Index of Inequality (RII) and Slope Index of Inequality (SII), respectively.ResultsThere were significant associations between SES and prevalence of dental caries and dmft (p<0.001). Children from lower educated (RII 1.36, 95% CI 1.3 to 1.43; SII 0.97, 95% CI 0.81 to 1.13) and lower household income (RII 1.17, 95% CI 1.11 to 1.24; SII 0.55, 95% CI 0.35 to 0.75) families had higher dmft than those from well-educated and most affluent families. Relative and absolute inequalities in dental caries were larger in urban areas by household income, and in rural areas by parental education.ConclusionsAssociation between dental caries and SES was demonstrated and socioeconomic inequalities in dental caries existed among Chinese preschool children.

Sonographic Assessment of Renal Volume in Normotensive Pregnant Women and Women With Pregnancy-Induced Hypertension in Enugu Metropolis

2021 ◽  
pp. 875647932110210
Author(s):  
Idigo Felicitas Ugochinyere ◽  
Nwankwo Sylvia Chiamaka ◽  
Abonyi Everistus Obinna ◽  
Anakwue Angel-Mary Chukwunyelu ◽  
Agbo Julius Amechi
Keyword(s):  
Reference Range ◽  
Interobserver Variability ◽  
Correct Diagnosis ◽  
Negative Relationship ◽  
Tertiary Hospital ◽  
Cross Sectional Study ◽  
Renal Volume ◽  
Cross Sectional ◽  
Significant Difference ◽  
Induced Hypertension

Objective: Renal volume (RV) assessment during obstetric sonography is rarely considered in our locality. Understanding the changes in RV in both normotensive pregnant (NP) and pregnancy-induced hypertensive (PIH) women is important in making correct diagnosis regarding pregnancy outcome. This study is aimed at determining the RV in NP and PIH women and correlating RV with fetal gestational age (FGA), body mass index (BMI), and parity in NP women. Materials and Methods: This cross-sectional study involved 450 patients recruited at a Tertiary Hospital. A pilot study was done to determine the interobserver variability in RV measurement. RV was calculated using the following formula: L × W × AP × 0.523. Parity, BMI, and blood pressure were documented, while FGA was calculated as an average of FGAs obtained from the measurements of fetal biometric parameters. Results: Mean RV of PIH women was significantly higher than that of NP women ( P < .05). RV shows a positive significant relationship with BMI and FGA, while it shows a negative relationship with parity in NP ( P < .05). Conclusion: Reference range values of RV were generated for clinical use in our locality, while there is statistically significant difference between RV in NP and PIH women.

scholarly journals Pre-schoolers’ tooth brushing behaviour and association with their oral health: a cross sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Iqra Muhammad Khan ◽  
Shani Ann Mani ◽  
Jennifer Geraldine Doss ◽  
Mahmoud Danaee ◽  
Lydia Yi Li Kong
Keyword(s):  
Preschool Children ◽  
Oral Health ◽  
Dental Caries ◽  
Parental Involvement ◽  
Cross Sectional Study ◽  
Parental Supervision ◽  
Gingival Index ◽  
Sectional Study ◽  
Cross Sectional ◽  
Plaque Score

Abstract Background Toothbrushing is an important yet neglected behaviour that affects the oral health of preschool children. Little is reported on parental supervision, an essential aspect of routine effective toothbrushing in this age group. The aim of this study was to evaluate pre-schoolers’ toothbrushing behaviour including parental involvement and its association with their oral health. Methods This was a cross-sectional study. A total of 92 preschool children (4–6 years) were invited to participate with their parents/guardians. Nine parameters of toothbrushing behaviour were assessed from parental responses (questionnaire) and observation of child and parents/guardians (video recording). Oral examination included recording plaque, gingival and dental caries indices. BORIS software was used to assess toothbrushing parameters and Smart PLS was used to perform association with a second-generation multivariate analysis to create models with and without confounding factors. Results Girls were slightly more (53%) than boys (47%). Children aged 4 years were slightly more in number (38%), followed by 6-year-olds and 5-year-olds. Nearly, 90% parents had tertiary education and 46% had more than 2 children. Differences were recorded in the reported and observed behaviour. Thirty-five percent parents/guardians reported using pea-size toothpaste amount but only 28% were observed. Forty percent reported to brush for 30 s–1 min, however 51% were observed to brush for 1–2 min. Half the children were observed to use fluoridated toothpaste (F < 1000 ppm) under parental supervision (11%). The mean (SD) plaque score reduction after toothbrushing was 10.80 (2.46), mean pre-brushing plaque score was 90.3 (10.2), mean gingival index was 0.89 (0.65) and mean dental caries status (ICDAS(1–6)) was 18.87 (12.39). Toothbrushing behaviour in terms of toothbrushing technique, duration, pattern and frequency, toothbrush type and grip type, toothpaste type and amount, post-brushing mouth rinsing and parental involvement contributed significantly to plaque score change (86%), dental caries status (73%), gingival index (66%) and pre-brushing plaque score (31%). The significant confounding variables had a small influence on oral health of preschool children. Conclusions Preschool children’s toothbrushing behaviour was inadequate while their oral health was poor, with a significant association between the two parameters.

scholarly journals Prevalence of Thinness among Santal Preschool Children Using New Body Mass Index Cut-Off Points

2011 ◽  
Vol 2011 ◽  
pp. 1-4
Author(s):  
Subal Das ◽  
Kaushik Bose
Keyword(s):  
Body Mass Index ◽  
Preschool Children ◽  
Nutritional Status ◽  
Body Mass ◽  
Cross Sectional Study ◽  
High Rate ◽  
Tribal Community ◽  
Community Based ◽  
Cross Sectional ◽  
Purulia District

A community-based cross-sectional study was undertaken to determine the prevalence of undernutrition using body mass index (BMI) among 2–6-year Santal preschool children of Purulia District, West Bengal, India. A total of 251 (116 boys and 135 girls) children from 12 villages were measured. Commonly used indicators, that is, weight, height, and BMI, were used to evaluate the nutritional status. More boys (59.5%) than girls (53.3%), based on BMI, were undernourished. Significant age differences in weight (F=44.29∗∗∗; df=3), height (F=58.48∗∗∗; df=3), and BMI (F=3.52∗∗∗; df=3) among boys were observed. Similarly, significant differences between ages in mean weight (F=56.27∗∗∗; df=3), height (F=64.76∗∗∗; df=3), and BMI (F=2.62∗∗∗; df=3) were observed among the girls. The present study revealed that the nutritional status of the preschool children of Santal tribal community of these villages was poor with very high rate of thinness in boys and girls (59.5% and 53.3%, resp.).

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