title: [Incidence of intra-individual lateral differences in interference fringe acuity and entoptic functions and their prognostic value with reference to lateral differences in optotypic acuity].
abstract: No adequate research results are available on the frequency and medical significance of intraindividual side differences in the entoptic functions and interference fringe acuity. We have collected data on these topics from examinations of 312 people with no eye defects; the subjects in this group were aged between 6 and 85 years and were divided into ten age-groups of approximately the same size. We were trying to find out to what extent a real side difference in the distant or near visual acuity can be deduced from an intraindividual side difference in the entoptic function test and/or laser interferometry as in healthy people. To allow grading of macular chagrin patches for the first time we defined the "microsymptoms of macular chagrin" patches. Moreover, we described the changes in interference fringe acuity and in entoptic function with advancing age. By using already established research approaches, we have evaluated the following parameters of examination: distant visual acuity with optotypes, near visual acuity (Nieden), entoptic functions (vessel figure of Purkinje and macular chagrin patches), laser interferometry (Retinometer) and ophthalmological findings. We found that of macular chagrin varied in appearance with the age of the patient. Patients with no eye defects seldom have an intraindividual side difference in the distant or near visual acuity, and any present is only marginal. This is why there seems to be too narrow a correlation with the results of the laser interferometry and of the entoptic function test. The negative predictive value is between 89% and 95%. This means that patients who have no side difference in interference fringe acuity or in the entoptic function test also have no intraindividual side difference in distant visual acuity with optotypes or near visual acuity (Nieden). This is the medical significance of our results in respect to more marked side differences such as are found in patients with eye defects. The predictive significance of the entoptic function test is enhanced by knowledge of microsymptoms of macular chagrin patches.
authors.affiliation: Augenklinik der Universität des Saarlandes, Homburg/Saar.
authors.forename: C
authors.initials: C
authors.lastname: Mörsch
authors.forename: H R
authors.initials: HR
authors.lastname: Höh
mesh_terms: D000065:Accommodation, Ocular / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008266:Macula Lutea / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012029:Refraction, Ocular / Q000502:physiology; D012160:Retina / Q000503:physiopathology; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*; D014788:Vision, Entoptic / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*
vernacular_title: Häufigkeit von intraindividuellen Seitenunterschieden der Interferenzsehschärfe und der entoptischen Funktionen und ihre prognostische Aussagekraft im Hinblick auf Seitenunterschiede der Optotypensehschärfe.