Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/85927
Título: | Pupil size effect on binocular summation for visual acuity and light disturbance |
Autor(es): | Martino, Francesco Filipa Pereira-da-Mota, Ana Amorim-de-Sousa, Ana Juan Castro-Torres, Jose González-Méijome, José Manuel |
Palavras-chave: | Binocular summation Pupil size Visual acuity Light disturbance Defocus |
Data: | 13-Dez-2022 |
Editora: | Springer |
Revista: | International Ophthalmology |
Citação: | Martino, F., Pereira-da-Mota, A.F., Amorim-de-Sousa, A. et al. Pupil size effect on binocular summation for visual acuity and light disturbance. Int Ophthalmol 43, 2183–2195 (2023). https://doi.org/10.1007/s10792-022-02614-w |
Resumo(s): | Purpose Smaller pupil size under binocular conditions could justify partially the improvement of visual performance when compared to monocular conditions. The purpose of this study was to assess the binocular summation for increasing levels of spherical and cylindrical defocus when the pupil size factor is ruled out as a confounding factor. Methods Fifteen young subjects were recruited in this crossover study. Light disturbance index (LDI) was evaluated with the light disturbance analyzer and low (LCDVA) and high (HCDVA) contrast visual acuity with the ETDRS test. Two positive spherical and cylindrical defocus levels (+ 1.5 and + 3.0 D) were used to induce a controlled degradation of the retinal image for two pupil sizes (3 and 5 mm). Results Our results showed poorer visual performance in monocular than the binocular condition. An increasing deterioration was observed with the level of spherical defocus. Positive binocular summation for visual acuity was found in all the parameters studied and was stronger under larger pupil size and for higher levels of spherical defocus. It was observed a positive binocular summation for the LDI under all the conditions studied. Strong and significant correlations were found between LDI and LCDVA and between LDI and HCDVA for all the conditions. Higher correlations were obtained between disturbance index and visual acuity for spherical defocus compared to cylindrical. Conclusion Binocular summation was observed under different conditions of spherical and cylindrical optical degradation of the image quality when the pupil size was fully controlled. This suggests that a neural factor is involved. |
Tipo: | Artigo |
Descrição: | The datasets generated during the current study are available from the corresponding author on reasonable request. |
URI: | https://hdl.handle.net/1822/85927 |
DOI: | 10.1007/s10792-022-02614-w |
ISSN: | 0165-5701 |
Versão da editora: | https://link.springer.com/article/10.1007/s10792-022-02614-w |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | ASSESSMENT AND ENHANCING VISUAL PERFORMANCE (2018 - ...) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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5.5.180. MARTINO_22_IntOphthalmol.pdf Acesso restrito! | 2,44 MB | Adobe PDF | Ver/Abrir |