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Archivos de la Sociedad Española de Oftalmología

versión impresa ISSN 0365-6691

Resumen

GALINDO-FERREIRO, A.; GALINDO-ALONSO, J.  y  SANCHEZ-TOCINO, H.. A new method to quantify subjective aniseikonia. Arch Soc Esp Oftalmol [online]. 2007, vol.82, n.2, pp.81-88. ISSN 0365-6691.

Purpose: To design subjective aniseikonia measuring criteria in order to quantify its value and to use it to the clinical practice. Material and Methods: In order to carry out the aniseikonia measurements, a sinoptophore (Clement Clark) was used and two tests (one per eye of each patient) were performed. A viewfinder capable of measuring the difference in size between subjective images in both eyes was used and a percentage scale of ratio between 0 and 30%, with an accuracy of 1% was developed. An observational descriptive study was performed on 358 patients, and a complete ophthalmological examination also performed. The patients were divided in 3 groups: emmetropic patients, ametropic patients with non-progressive spectacles, and ametropic patients with hydrophilic contact lenses. Results: Of the 358 patients studied, 22.7% were men and 67.3% women. The average age was 38.3 (SD 17.3) years. 40.2% of the patients were emmetropic and 59.8% had some type of ametropia. When analyzing the refractive defect measured as the spherical equivalent we found a higher prevalence of myopia than hyperopia. The level of aniseikonia in the group of emmetropic patients was 1.6% (SD 3.11), in patients with glasses was 1.3% (SD 2.81), and in patients with contact lenses was 1.1% (SD 2.96). Comparing the results of aniseikonia in anisometropic and emmetropic patients, no statistically significant differences were found. Conclusion: A simple method to quantify subjective aniseikonia, useful in clinical diagnosis has been designed.

Palabras clave : Subjective aniseikonia; sinoptophore; aniseikonia measurement; anisometropia; ocular image.

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