Correlation between Hertel exophthalmometric value and refraction in young Cameroonian adults aged 20 to 40 years

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

Purpose

To study the relationship between exophthalmometric value (EV) and refractive error in Cameroonian young adults.

Patients and methods

A prospective descriptive study was carried out in the ophthalmic unit of the Yaoundé Central Hospital from March to May 2015. Consenting patients aged 20–40 years with no intraocular pathology who were seen for refractive errors were included. Ocular protrusion was measured using the Hertel exophthalmometer. Automatic refraction was done following cycloplegia with cyclopentolate and tropicamide.

Results

A total of 200 patients were included (68% females and 32% males). The mean age was 27.2±6 years. Hyperopia was the most common refractive error (51%), followed by hyperopic astigmatism (19.3%). EV varied between 9 mm and 23 mm, with a mean of 14.8±2.5 mm in the right eye and 15.0±2.5 mm in the left eye. The mean EVs were 17.10±2.80 mm in myopia, 14.24±1.92 mm in hyperopia, 16.72±2.58 mm in myopic astigmatism, 14.07±2.19 mm in hyperopic astigmatism, and 14.77±2.40 mm in mixed astigmatism. The spherical value had a negative correlation with EV ( P=0.0000).

Conclusion

The mean EV of this Cameroonian population is smaller than that of other populations and is consistent with the known characteristic hyperopic status of the population. A study on a larger sample will determine the normative data of absolute and relative EV in our setting.

Related collections

Most cited references 21

Record: found
Abstract: found
Article: not found

Refractive error in children in a rural population in India.

Lalit Dandona, Shyam M. Srinivas, Saggam Narsaiah … (2002)

To assess the prevalence of refractive error and related visual impairment in school-aged children in the rural population of the Mahabubnagar district in the southern Indian state of Andhra Pradesh. Random selection of village-based clusters was used to identify a sample of children 7 to 15 years of age. From April 2000 through February 2001, children in the 25 selected clusters were enumerated in a door-to-door survey and examined at a rural eye center in the district. The examination included visual acuity measurements, ocular motility evaluation, retinoscopy and autorefraction under cycloplegia, and examination of the anterior segment, media, and fundus. Myopia was defined as spherical equivalent refractive error of at least -0.50 D and hyperopia as +2.00 D or more. Children with reduced vision and a sample of those with normal vision underwent independent replicate examinations for quality assurance in seven clusters. A total of 4414 children from 4876 households was enumerated, and 4074 (92.3%) were examined. The prevalence of uncorrected, baseline (presenting), and best corrected visual acuity of 20/40 or worse in the better eye was 2.7%, 2.6%, and 0.78%, respectively. Refractive error was the cause in 61% of eyes with vision impairment, amblyopia in 12%, other causes in 15%, and unexplained causes in the remaining 13%. A gradual shift toward less-positive values of refractive error occurred with increasing age in both boys and girls. Myopia in one or both eyes was present in 4.1% of the children. Myopia risk was associated with female gender and having a father with a higher level of schooling. Higher risk of myopia in children of older age was of borderline statistical significance (P = 0.069). Hyperopia in at least one eye was present in 0.8% of children, with no significant predictors. Refractive error was the main cause of visual impairment in children aged between 7 and 15 years in rural India. There was a benefit of spectacles in 70% of those who had visual acuity of 20/40 or worse in the better eye at baseline examination. Because visual impairment can have a significant impact on a child's life in terms of education and development, it is important that effective strategies be developed to eliminate this easily treated cause of visual impairment.

0 comments Cited 124 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Refractive error and ethnicity in children.

S. Kwon, N. Friedman, J. Yu … (2003)

To report the baseline prevalence of refractive error in the study population. A multicenter, longitudinal, observational study of refractive error and ocular development in children from 4 ethnic groups. The study population included 2523 children (534 African American, 491 Asian, 463 Hispanic, and 1035 white) in grades 1 to 8 (age, 5-17 years). Myopia was defined as -0.75 diopters (D) or more and hyperopia as +1.25 D or more in each principal meridian, and astigmatism was defined as at least a 1.00-D difference between the 2 principal meridians (cycloplegic autorefraction). Overall, 9.2% of the children were myopic, 12.8% were hyperopic, and 28.4% were astigmatic. There were significant differences in the refractive error prevalences as a function of ethnicity (chi2, P<.001), even after controlling for age and sex (polychotomous logistic regression, P<.001). For myopia, Asians had the highest prevalence (18.5%), followed by Hispanics (13.2%). Whites had the lowest prevalence of myopia (4.4%), which was not significantly different from African Americans (6.6%). For hyperopia, whites had the highest prevalence (19.3%), followed by Hispanics (12.7%). Asians had the lowest prevalence of hyperopia (6.3%) and were not significantly different from African Americans (6.4%). For astigmatism, Asians and Hispanics had the highest prevalences (33.6% and 36.9%, respectively) and did not differ from each other (P =.17). African Americans had the lowest prevalence of astigmatism (20.0%), followed by whites (26.4%). There were significant differences in the prevalence of refractive errors among ethnic groups, even after controlling for age and sex (P<.001).

0 comments Cited 79 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Juvenile eye growth, when completed? An evaluation based on IOL-Master axial length data, cross-sectional and longitudinal.

Hans Fledelius, Anders Christensen, Christian Fledelius (2014)

To test Sorsby's classical statement of axial eye growth as completed at the age of 13 years, with a view also to differentiating between basic eye growth and juvenile elongation associated with eventual refractive change towards myopia.

0 comments Cited 26 times – based on 0 reviews      Review now

Bookmark

All references

Author and article information

Journal

Journal ID (nlm-ta): Clin Ophthalmol

Journal ID (iso-abbrev): Clin Ophthalmol

Journal ID (publisher-id): Clinical Ophthalmology

Title: Clinical Ophthalmology (Auckland, N.Z.)

Publisher: Dove Medical Press

ISSN (Print): 1177-5467

ISSN (Electronic): 1177-5483

Publication date Collection: 2016

Publication date (Electronic): 29 July 2016

Volume: 10

Pages: 1447-1451

Affiliations

Department of Ophthalmology, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon

Author notes

Correspondence: Viola A Dohvoma, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, PO Box 3851 Messa, Yaoundé, Cameroon, Tel +237 6 9973 5506, Email andinv@ 123456gmail.com

Article

Publisher ID: opth-10-1447

DOI: 10.2147/OPTH.S111915

PMC ID: 4975139

PubMed ID: 27536057

SO-VID: 0553244b-2e00-4619-b659-630a781b596f

License:

The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

Correlation between Hertel exophthalmometric value and refraction in young Cameroonian adults aged 20 to 40 years

Read this article at

Abstract

Purpose

Patients and methods

Results

Conclusion

Related collections

Karger: Ophthalmology

Most cited references 21

Refractive error in children in a rural population in India.

Refractive error and ethnicity in children.

Juvenile eye growth, when completed? An evaluation based on IOL-Master axial length data, cross-sectional and longitudinal.

Author and article information

Journal

Affiliations

Author notes

Article

History

Categories

Comments

Comment on this article

Similar content 237

Cited by 2

Most referenced authors 203