168706 20260217214838.0 doi 10.1080/08164622.2021.2011151 sideral 125628 ART-2021-125628 eng Soriano Pina, Diana Universidad de Zaragoza Analysis of the vergence facility test using different prismatic dioptric powers 2021 Clinical relevance: The vergence facility (VF) test is important in a complete optometric examination, but there is still controversy over which prismatic power combinations to use according to the patient age, especially in children. Background:The aim of this work is to study the VF test using three different prismatic power combinations in four age groups, with a view to determine the best prismatic power for performing the test. Methods: The VF of 122 healthy subjects was evaluated using three prismatic flippers with different powers: 8∆ base-in with 8∆ base-out (8BI/8BO∆), 3BI/12BO∆ and 5BI/15BO∆. The number of cycles per minute (cpm) was counted. Results: The participants were divided into four age groups. The mean age of group 1 was 6.69 ± 0.65 years, that of group 2 was 9.36 ± 0.87 years, that of group 3 was 12.08 ± 0.79 years and that of group 4 was 28.67 ± 8.11 years. The mean cpm value in VF was higher for near vision than in distance vision. The lowest cpm values were observed in the youngest group (group 1) (far vision: 8BI/8BO∆: 2.32 cpm, 3BI/12BO∆: 2.68 cpm and 5BI/15BO∆: 1.59 cpm; near vision: 8/8∆: 6.59 cpm, 3BI/12BO∆: 7.77 cpm and 5BI/15BO∆: 5.27 cpm). The cpm values increased progressively with age, with group 4 achieving the highest cpm values (far vision: 8BI/8BO∆: 3.61 cpm, 3BI/12BO∆: 8.56 cpm and 5BI/15BO∆: 5.28 cpm; near vision: 8BI/8BO∆: 10.22 cpm, 3BI/12BO∆: 12.28 cpm and 5BI/15BO∆: 10.89 cpm). Conclusions: VF increased with age. The youngest children achieved the lowest cpm values, which progressively increased until the highest cpm values were achieved in adults. The best results were found with 3BI/12BO∆ in all groups in near and far vision. Higher cpm values were achieved in near vision than in far vision with all flippers in all groups info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.143 2021 OPHTHALMOLOGY 29 / 62 = 0.468 2021 Q2 T2 0.769 2021 Optometry 2021 Q1 Ophthalmology 2021 Q1 4.2 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Orduna-Hospital, Elvira Universidad de Zaragoza (orcid)0000-0003-2710-1875 López-de-la-Fuente, Carmen Universidad de Zaragoza (orcid)0000-0002-7471-5362 1013 646 Universidad de Zaragoza Dpto. Cirugía Área Oftalmología 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 106, 1 (2021), 62-68 Clinical and Experimental Optometry Clinical and Experimental Optometry 0816-4622 2525001 http://zaguan.unizar.es/record/168706/files/texto_completo.pdf Versión publicada 958544 http://zaguan.unizar.es/record/168706/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:168706 articulos driver 2026-02-17-20:13:51 ARTICLE