Binocular Measurements in a Nonselected Group of Non-strabismic Patients 8-35 Years Old, in Sweden.
Background: To investigate binocular findings in a nonselected group of patients examined in optometric practice, and in this group to analyze the frequency of meeting the criteria for convergence and accommodative insufficiency. Methods: In this national multi center study, 159 patients that volunt...
| Publicado en: | Optometry & Visual Performance Vol. 6; no. 1; pp. 31 - 38 |
|---|---|
| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Optometric Extension Program
Feb2018
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=128404931&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 128404931 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 23253479 HOOW jtl: Optometry & Visual Performance issn: 23253479 maglogo: N pubinfo: dt: Feb2018 vid: 6 iid: 1 pid: 46881 pub: Optometric Extension Program place: Lutherville Timonium, Maryland artinfo: ui: 128404931 128404931 128404931 128404931 ppf: 31 ppct: 7 formats: tig: atl: Binocular Measurements in a Nonselected Group of Non-strabismic Patients 8-35 Years Old, in Sweden. aug: au: Skjöld, Göran Skjöld, Alexandra Brinkby, Gustav Yuanji Cheng affil: Optometrist, MSc Clinical Optometry, Malmö, Sweden sug: subj: Body Weights and Measures Diagnosis, Eye Ocular Motility Disorders Diagnosis Human Child Adolescence Adult Sweden Multicenter Studies Descriptive Statistics Questionnaires Refraction, Ocular Optometry P-Value Optometrists Male Female Clinical Assessment Tools Analysis of Variance Data Analysis Software Chi Square Test Post Hoc Analysis Child: 6-12 years Adolescent: 13-18 years Adult: 19-44 years Male Female ab: Background: To investigate binocular findings in a nonselected group of patients examined in optometric practice, and in this group to analyze the frequency of meeting the criteria for convergence and accommodative insufficiency. Methods: In this national multi center study, 159 patients that voluntarily made appointments for visual examination and were found to meet the inclusion criteria, were examined following a specified protocol that included answering a questionnaire, a series of tests with the habitual correction, followed by refraction and specified sequence of binocular measurements. Results: Mean values and standard deviation for all measurements were compared with expected values according to commonly used optometric norms. The binocular findings closely followed Morgans norms of expected values. The frequency of meeting the criteria for convergence insufficiency and accommodative insufficiency was analyzed for the total group and for three age groups. For convergence insufficiency the frequency was 9.4% for the total group (n=159), 11.9% for 8-15 years of age (n=42), 6.6% for 16-25 years of age (n=61) and 10.0% for 26-35 years of age (n=56). For accommodative insufficiency the frequency was 17.6% in the total group (n=159), 50.0% for 8-15 years of age (n=42), 9.0% for 16-25 years of age (n=61) and 2.0% for 26-35 years of age (n=56). Conclusion: The frequency of meeting the criteria for primary convergence insufficiency and accommodative insufficiency was found to be high in the examined population, compared to other studies. For patients 8-15 years of age, positive relative convergence for near (40cm), negative relative accommodation and accommodative amplitude were below expected values and the criteria for accommodative insufficiency was significantly more met in the group (p<0.001). pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|