Cycloplegic Refraction in Myopic Children with Brown Irises: Time of Maximum Cycloplegia and Difference between Retinoscopy and Autorefraction

2021 ◽  
Vol 104 (3) ◽  
pp. 364-369

Objective: To evaluate time of maximum cycloplegia in myopic children with brown irises and to study differences between refractive error after maximum cycloplegia measured by retinoscopy and autorefraction. Materials and Methods: The present study was a prospective descriptive study included myopic children with brown irises aged 5 to 14 years. Cycloplegic refraction was performed using cyclopentolate 1%, three times, ten minutes apart. Refractive error was measured by autorefraction before and at 30, 40, 50, 60, 70, and 80 minutes after the first instillation of cyclopentolate. Finally, retinoscopy was performed by a single examiner at 80 minutes. Time of maximum cycloplegia was determined from the time point at which the 95% confidence interval of the differences between the mean spherical equivalent (SE) at each point and its final value at 80 minutes was reached and remained within the equivalence limit (±0.25 D). Difference between SE of retinoscopy and autorefraction was evaluated. Results: Sixty-eight children were recruited. The mean age was 10.5 years (SD 2.4). Thirty-seven children were male (54%). The time of maximum cycloplegia was 30 minutes after the first instillation of cyclopentolate. At 80 minutes, the degree of myopia measured by autorefraction was significantly higher compared to those measured by retinoscopy (p<0.001, mean difference 0.26 D). Conclusion: Time of maximum cycloplegia in myopic children with brown irises was 30 minutes after the first instillation of cyclopentolate. Even when the maximum cycloplegia was reached, the degree of myopia measured by autorefraction was higher than that measured by retinoscopy. Keywords: Cycloplegic refraction, Cyclopentolate, Cycloplegia, Myopia, Myopia in children, Retinoscopy, Autorefraction

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Roya Rahimi ◽  
Shirin Hasanpour ◽  
Mojgan. Mirghafourvand ◽  
Khalil Esmaeilpour

Abstract Background Considering the prevalence of infertility in the community and the consequences of failure of infertility treatments on women’s mental health, interventions that can control stress, anxiety and depression in infertile women with a history of IVF failure will be very helpful. This study aimed to determine the effects of hope-oriented group counseling on mental health (primary outcome) and quality of life (QoL) (secondary outcome) of women with failed IVF cycles. Method This randomized controlled trial was conducted on 60 women with failed IVF cycles visiting Infertility Clinic at Al-Zahra Teaching Hospital of Tabriz- Iran. Participants were allocated to the intervention group (n = 30) and control group (n = 30) based on a randomized block design. Hope-oriented group counseling was provided to the intervention group in six 45–60 min sessions (once a week). The control group only received routine care to undergo another IVF cycle. The Depression Anxiety Stress Scale-21 (DASS-21) and the SF-12 Quality of Life Scale were filled out by interviewing the participants before the intervention and one week and one month after the intervention. After intervention 26 participants in each group were included in the analysis. Results There was no significant difference between the intervention and control groups in the socio-demographic profile of participants (P > 0.05). The post-intervention mean score of stress (adjusted mean difference = − 1.7, 95% confidence interval: − 3.2 to − 0.3, P = 0.018) and depression (adjusted mean difference = − 1.3, 95% confidence interval: − 4.7 to − 1.5, P < 0.001) was significantly lower in the intervention group compared to the control. Although the mean anxiety score was lower in the intervention group compared to the control, the difference between them was not statistically significant (adjusted mean difference = − 1.1, 95% confidence interval: − 2.6 to 0.4, P = 0.153). The mean score of QoL was significantly higher in the intervention group than that of the control group (adjusted mean difference = 6.9, 95% confidence interval: 5.1 to 8.8, P < 0.001). Conclusion Hope-oriented group counseling was effective in reducing stress and depression and improving QoL in women with failed IVF cycles. It is recommended to use this counseling approach, along with other methods, to improve the mental health of women with failed IVF cycles. Trial registration TCT Registration Number: TCTR 20191017003, registered on October 17, 2019.


Author(s):  
Feride Tuncer Orhan ◽  
Haluk Huseyin Gürsoy

Aim To evaluate consecutive measurements of the biometric parameters, age, and refraction error in a Turkish population at primary school age. Materials and Methods A total of 197 children aged between 7-12 years were included. The data of three consecutive measurements of children, who were examined at least once a year for three years using both cycloplegic auto-refractometry and optical biometry, were used in this retrospective study. Spherical equivalent <-0.50D was considered to be myopic; >+0.75D was considered to be hypermetropic. Age, gender, body mass index, spherical equivalent, axial length, anterior chamber depth, central corneal thickness, keratometry, and lens thickness were analyzed. The onset data obtained in 2013 whereas, the final data were from 2015. Logistic and Cox regression analyses were performed (p<0.05). Results The mean of the onset and the final spherical equivalents were 0.19D (0.56), and 0.08D (0.80), respectively. The myopia prevalence was increased among refractive errors in observation periods (univariable analysis p=0.029; multivariable analysis p=0.017). The onset axial length (HR:4.55, 95%CI:2.87-7.24, p<0.001), keratometry (HR:2.04, 95%CI:1.55-2.67, p<0.001) and age (HR:0.73, 95%CI: 0.57-0.92, p=0.009) correlated myopia progression. To calculate the estimated spherical equivalent, the onset data were included in the logistic regression model. The onset data of spherical equivalent (β=0.916, p<0.001), axial length (β=-0.451, p<0.001), anterior chamber depth (β=0.430, p=0.005) and keratometry (β=-0.172, p<0.001) were found to be significantly associated with the mean SE at the final data. Conclusions To calculate the estimated spherical equivalent following three years, an equation was proposed. The estimated refractive error of children can be calculated by using the proposed equation with the associated onset optical parameters.


2020 ◽  
pp. bjophthalmol-2020-316499
Author(s):  
Paul McCann ◽  
Ruth Hogg ◽  
David M Wright ◽  
Usha Chakravarthy ◽  
Tunde Peto ◽  
...  

AimsTo describe the distributions of and associations with intraocular pressure (IOP) and circumpapillary retinal nerve fibre layer (cRNFL) thickness in a population-based study.MethodsNorthern Ireland Cohort for the Longitudinal Study of Ageing participants underwent a computer-assisted personal interview, a self-completion questionnaire and a health assessment (HA). At the HA, participants underwent IOP measurement using Ocular Response Analyser and spectral-domain optical coherence tomography with Heidelberg Spectralis. Participants also underwent a range of anthropometric, ophthalmic, cardiovascular, cognition and blood tests. Participants who attended the HA and had a vertical cup-to-disc ratio (VCDR) measurement in at least one eye were eligible for the study. Participants without any IOP or cRNFL measurements were excluded from the respective analyses.ResultsThere were 3221 participants eligible for this study (5753 eyes included in the IOP analysis and 5461 eyes included in the cRNFL analysis). The mean (SD) Goldmann correlated IOP (IOPg) was 15.39 mm Hg (3.55 mm Hg). The mean (SD) average global cRNFL thickness was 94.39 µm (11.18 µm). Increased IOPg was associated with increased age, male sex, hypertension, refractive error (myopic decrease in spherical equivalent) and increased corneal resistance factor, while beta-blocker drug use was associated with lower IOPg in the fully adjusted multivariate analysis. Thinner average global cRNFL was associated with Alzheimer’s disease in the age-adjusted and sex-adjusted model. In the fully adjusted multivariate analysis, increased age, male sex, left eyes, hypertension, increased VCDR, refractive error (myopic decrease in spherical equivalent) and increased IOPg were associated with thinner average global cRNFL, while Parkinson’s disease and current (vs never) smoking status were associated with thicker average global cRNFL.ConclusionsIncreased IOP and reduced cRNFL were associated with increased age, myopic refractive error, male sex and hypertension. Alzheimer’s disease was associated with thinner average global cRNFL, while Parkinson’s disease was associated with thicker average global cRNFL.


2018 ◽  
Vol 29 (2) ◽  
pp. 223-228 ◽  
Author(s):  
Jing Liang

Introduction: Retinopathy of prematurity is a leading cause of potentially avertable childhood blindness around the world. And laser photocoagulation is currently performed as a gold standard for retinopathy of prematurity treatment, but it may contribute to elevated myopia and decreased visual field. Therefore, the objective of this meta-analysis is to explore the negative impact of laser photocoagulation for retinopathy of prematurity in terms of anatomic outcomes and structural outcomes. Methods: Studies were retrieved through literature searches in PubMed and EMBASE from 1990 to 2017 in English. Case-control studies that reported anatomic and structural changes or significant complications after laser coagulation or cryotherapy for retinopathy of prematurity were eligible. Results: This meta-analysis included eight original studies related to laser treatment for retinopathy of prematurity at any stages. A total of 1422 infants were participated, of which 1156 documented subthreshold or threshold retinopathy of prematurity without laser treatment were selected as comparison group and the rest treated with diode or argon laser coagulation were chosen for experiment group. Taking all included studies into account, spherical equivalent (mean difference −2.53, 95% confidence interval: –5.23 to 0.18, I2 = 96%, P < 0.00001), anterior chamber depth (mean difference −0.52, 95% confidence interval: −0.76 to −0.28, I2 = 55%, P = 0.11), astigmatism (odds ratio 3.19, 95% confidence interval: 1.61 to 6.32, I2 = 0%, P = 0.54), and myopia (odds ratio 8.08, 95% confidence interval: 3.79 to 17.23, I2 = 37%, P = 0.21) were associated with laser treatment for retinopathy of prematurity. Axial length (mean difference −0.01, 95% confidence interval: –0.28 to 0.27, I2 = 0%, P = 0.62) and anisometropia (odds ratio 4.21, 95% confidence interval: 0.54 to 33.17, I2 = 1%, P = 0.31) had no statistical significance on laser coagulation for retinopathy of prematurity. Conclusion: This meta-analysis showed that spherical equivalent, anterior chamber depth, astigmatism, and myopia were associated with the negative outcomes of laser coagulation, while axial length and anisometropia had no statistical importance on the defects of laser coagulation. Therefore, patients treated with laser coagulation should follow periodic cycloplegic refraction and receive early optical correction.


2019 ◽  
Vol 4 (1) ◽  
pp. e000242 ◽  
Author(s):  
Chung Shen Chean ◽  
Boon Kang Aw Yong ◽  
Samuel Comely ◽  
Deena Maleedy ◽  
Stephen Kaye ◽  
...  

ObjectivePrediction errors are increased among patients presenting for cataract surgery post laser vision correction (LVC) as biometric relationships are altered. We investigated the prediction errors of five formulae among these patients.Methods and analysisThe intended refractive error was calculated as a sphero-cylinder and as a spherical equivalent for analysis. For determining the difference between the intended and postoperative refractive error, data were transformed into components of Long's formalism, before changing into sphero-cylinder notation. These differences in refractive errors were compared between the five formulae and to that of a control group using a Kruskal-Wallis test. An F-test was used to compare the variances of the difference distributions.Results22 eyes post LVC and 19 control eyes were included for analysis. Comparing both groups, there were significant differences in the postoperative refractive error (p=0.038). The differences between the intended and postoperative refractive error were greater in post LVC eyes than control eyes (p=0.012), irrespective of the calculation method for the intended refractive error (p<0.01). The mean difference between the intended and postoperative refractive error was relatively small, but its variance was significantly greater among post LVC eyes than control eyes (p<0.01). Among post LVC eyes, there were no significant differences between the mean intended target refraction and between the intended and postoperative refractive error using five biometry formulae (p=0.76).ConclusionBiometry calculations were less precise for patients who had LVC than patients without LVC. No particular biometry formula appears to be superior among patients post LVC.


2018 ◽  
Vol 19 (5) ◽  
pp. 436-440
Author(s):  
Gianluca Villa ◽  
Cosimo Chelazzi ◽  
Rosa Giua ◽  
Laura Lavacchini ◽  
Lorenzo Tofani ◽  
...  

Background: During ultrasound-guided cannulation, venous filling is required for venipuncture. Tourniquet with an elastic tube at the axilla is the most common method to induce venous stasis for cannulation of the deep veins of the arm. Although effective, this method might be associated with short- and long-term complications. Valsalva manoeuvre has been used to produce venous filling in other extrathoracic veins. The aim of this observational study is to demonstrate the effect of Valsalva manoeuvre in respect of the elastic tourniquet on venous distention during echography-guided cannulation of the deep veins of the arm. Method: Sixty-nine patients scheduled for cannulation of basilic or brachial vein were prospectively observed. Vein diameters were recorded at rest and after 10 s of Valsalva or tourniquet placement. Results: The mean difference between basilic vein diameters during tourniquet and Valsalva manoeuvre was 0.006 mm (95% confidence interval = −inf, 0.09) with a standard deviation of 0.5 mm (95% confidence interval = 0.5, 0.7; p > 0.01). The mean difference between brachial vein diameters during tourniquet and Valsalva manoeuvre was 0.04 mm (95% confidence interval = −0.23, 0.15) with a standard deviation of 0.8 mm (95% confidence interval = 0.7, 0.9; p > 0.01). Discussion: This increase in cross-sectional basilic and brachial vein diameters was not different to that obtained with the elastic tube tourniquet.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Farideh Golshani ◽  
Shirin Hasanpour ◽  
Mojgan Mirghafourvand ◽  
Khalil Esmaeilpour

Abstract Background Given the prevalence of infertility and consequences of stress, anxiety, and depression during pregnancy and after childbirth, this study aimed to determine the effect of group cognitive behavioral therapy (CBT)-based counseling on perceived stress (primary outcome), anxiety, depression, and quality of life (QoL) of pregnant women with a history of primary infertility. Method This controlled randomized clinical trial was conducted on 56 pregnant women with a history of primary infertility referred to Infertility Clinic of Al-Zahra Teaching Hospital of Tabriz. The participants were divided into the intervention (n = 28) and control (n = 28) groups using block randomization. The intervention group received group CBT-based counseling after the 14th week of the pregnancy: six in-person sessions and two telephone sessions once per week. The control group received routine care. The Perceived Stress Scale (PSS), Edinburgh Postnatal Depression Scale (EPDS), Van den Bergh’s Pregnancy-Related Anxiety Questionnaire (PRAQ), and Quality of Life in Pregnancy (Gravidarum) (QOL-GRAV) were completed through interviews before and 4 weeks after the intervention by the researcher. Results There was not any between-group difference in socio-demographic characteristics, except the gestational age and husband educational level (p > 0.05). Both of these variables were adjusted in ANCOVA. After the intervention, the mean scores of perceived stress (mean difference: − 7.3; confidence interval: 95%, from − 0.9 to − 5.6; p < 0.001) and anxiety (mean difference:-14.7; confidence interval: 95%. from − 20.6 to - 8.8; p < 0.001) were significantly lower in the intervention group. The mean depression score in the intervention group was lower than the control; however, this between-group difference was not significant (mean difference: − 1.95; confidence interval: 95% from − 3.9 to 0.2; p = 0.052). The mean score of quality of life in pregnancy was significantly higher in the intervention group than the control (mean difference: − 5.4; confidence interval: 95% from 3.4 to 7.4; p < 0.001). Conclusion CBT counseling can affect the perceived stress, anxiety, and quality of life of pregnant women with a history of primary infertility. As a result, this counseling approach is recommended along with other counseling approaches to improve the mental health of pregnant women with a history of infertility. Trial registration IRCT Registration Number: IRCT20111219008459N12, registered on 10/11/ 2018.


PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256087
Author(s):  
Marc B. Muijzer ◽  
Janneau L. J. Claessens ◽  
Francesco Cassano ◽  
Daniel A. Godefrooij ◽  
Yves F. D. M. Prevoo ◽  
...  

Purpose To evaluate the outcome of a web-based digital assessment of visual acuity and refractive error, compared to a conventional supervised assessment, in keratoconus patients with complex refractive errors. Material and methods Keratoconus patients, aged 18 to 40, with a refractive error between -6 and +4 diopters were considered eligible. An uncorrected visual acuity and an assessment of refractive error was taken web-based (index test) and by manifest refraction (reference test) by an optometrist. Corrected visual acuity was assessed with the prescription derived from both the web-based tool and the manifest refraction. Non-inferiority was defined as the 95% limits-of-agreement (95%LoA) of the differences in spherical equivalent between the index and reference test not exceeding +/- 0.5 diopters. Agreement was assessed by a Bland-Altman analyses. Results A total of 100 eyes of 50 patients were examined. The overall mean difference of the uncorrected visual acuity measured -0.01 LogMAR (95%LoA:-0.63–0.60). The variability of the differences decreased in the better uncorrected visual acuity subgroup (95%LoA:-0.25–0.55). The overall mean difference in spherical equivalent between the index and reference test exceeded the non-inferiority margin: -0.58D (95%LoA:-4.49–3.33, P = 0.008). The mean differences for myopic and hyperopic subjects were 0.09 diopters (P = 0.675) and -2.06 diopters (P<0.001), respectively. The corrected visual acuities attained with the web-based derived prescription underachieved significantly (0.22±0.32 logMAR vs. -0.01±0.13 LogMAR, P <0.001). Conclusions Regarding visual acuity, the web-based tool shows promising results for remotely assessing visual acuity in keratoconus patients, particularly for subjects within a better visual acuity range. This could provide physicians with a quantifiable outcome to enhance teleconsultations, especially relevant when access to health care is limited. Regarding the assessment of the refractive error, the web-based tool was found to be inferior to the manifest refraction in keratoconus patients. This study underlines the importance of validating digital tools and could serve to increase overall safety of the web-based assessments by better identification of outlier cases.


Author(s):  
Marc B Muijzer ◽  
Janneau L J Claessens ◽  
Francesco Cassano ◽  
Daniel A Godefrooij ◽  
Yves F D M Prevoo ◽  
...  

AbstractPurposeTo evaluate the outcome of a web‐based digital assessment of visual acuity and refractive error, compared to a manifest refraction assessment, in keratoconus patients with complex refractive errors.Material and methodsKeratoconus patients, aged 18 to 40, with a refractive error between ‐6 and +4 diopters were eligible. Each participant subsequently underwent an uncorrected visual acuity and a refractive assessment. Refractive error was assessed with the web‐based tool (index test), an autorefractor, and a manifest refraction (reference test) by an optometrist. Corrected visual acuity was assessed with the web‐based and manifest refractive prescription. Non‐inferiority was defined as the 95% limits‐of‐agreement (95%LoA) of the differences in spherical equivalent between the index and reference test not exceeding +/‐ 0.5 diopters. Agreement was assessed by an intraclass correlation coefficient and Bland‐Altman analyses.ResultsA total of 100 eyes of 50 patients were examined. The overall mean difference of the uncorrected visual acuity measured ‐0.01 LogMAR (95%LoA:‐0.63–0.60). The variability decreased in the high uncorrected visual acuity subgroup (mean difference: 0.15 LogMAR, 95%LoA:‐0.25–0.55). The intraclass correlation coefficient of the three refractive assessments was 0.32. The overall mean difference in spherical equivalent between the index and reference test measured ‐0.58 diopters (95%LoA:‐4.49 – 3.33, P=0.008). The mean differences for myopic and hyperopic subjects were 0.09 diopters (P=0.675) and ‐2.06 diopters (P<0.001), respectively.ConclusionsOur results show promising results in the ability of the web‐based tool to remotely assess visual acuity in keratoconus patients. The agreement is better in higher visual acuity ranges and could provide physicians with an objective measurement to enhance teleconsultations, especially relevant when access to health care is limited. The assessment of the refractive error using the web‐based tool was found to be inferior to the manifest refraction and deserves further training of the tools algorithm.


2021 ◽  
Author(s):  
Roya Rahimi ◽  
Mojgan Mirghafourvand ◽  
Khalil Esmaeilpour ◽  
Shirin Hasanpour

Abstract Background Considering the prevalence of infertility in the community and the consequences of failure of infertility treatments on women's mental health, interventions that can control stress, anxiety and depression in infertile women with a history of IVF failure will be very helpful. This study aimed to determine the effects of hope-oriented group counseling on mental health (primary outcome) and quality of life (QoL) (secondary outcome) of women with failed IVF cycles.Method This randomized controlled trial was conducted on 60 women with failed IVF cycles visiting Infertility Clinic at Al-Zahra Teaching Hospital of Tabriz- Iran. Participants were allocated to the intervention group (n = 30) and control group (n = 30) based on a randomized block design. Hope-oriented group counseling was provided to the intervention group in six 45–60 minute sessions (once a week). The control group only received routine care to undergo another IVF cycle. The author filled out the Depression Anxiety Stress Scale-21 (DASS-21) and the SF-12 Quality of Life Scale by interviewing the participants before the intervention and one week and one month after the intervention.Results There was no significant difference between the intervention and control groups in the socio-demographic profile of participants (P > 0.05). The post-intervention mean score of stress (modified mean difference=-1.7, 95% confidence interval: -3.2 to 0.3, P = 0.018) and depression (modified mean difference=-1.3, 95% confidence interval: -4.7 to -1.5, P < 0.001) was significantly lower in the intervention group compared to the control. Although the mean anxiety score was lower in the intervention group compared to the control, the difference between them was not statistically significant (modified mean difference= -1.1, 95% confidence interval: -2.6 to 0.4, P = 0.153). The mean score of QoL was significantly higher in the intervention group than that of the control group (modified mean difference= -1.1, 95% confidence interval: 5.1 to 8.8, P < 0.001).Conclusion Hope-oriented group counseling was effective in reducing stress and depression and improving QoL in women with failed IVF cycles. It is recommended to use this counseling approach, along with other methods, to improve the mental health of women with failed IVF cycles.Trial Registration TCT Registration Number: TCTR 20191017003, registered on October 17, 2019 (http://www.clinicaltrials.in.th/index.php?tp=regtrials&menu=trialsearch&smenu=fulltext&task=search&task2=view1&id=5369)


Sign in / Sign up

Export Citation Format

Share Document