| Título: | Binocular function changes produced in response to overnight orthokeratology |
| Autores: | Felipe Márquez, Gema ; Nombela Palomo, María ; Palomo Álvarez, Catalina ; Cacho Bobillo, Isabel ; Nieto Bona, Amelia |
| Tipo de documento: | texto impreso |
| Editorial: | Springer, 2017-01 |
| Dimensiones: | application/pdf |
| Nota general: | info:eu-repo/semantics/restrictedAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias Biomédicas: Óptica y optometría: Lentes de contacto , Materia = Ciencias Biomédicas: Óptica y optometría: Optometría , Materia = Ciencias Biomédicas: Óptica y optometría: Óptica oftálmica , Tipo = Artículo |
| Resumen: |
Purpose: To analyze the binocular function changes produced on subjects undergoing overnight orthokeratology (OK) treatment over short-term (3 months) and long-term (3 years) wear. Methods: A prospective, longitudinal study on young adult subjects with low to moderate myopia was carried out. Binocular function was assessed by the following sequence of tests: Distance and near horizontal phoria (Von Graefe technique), distance and near horizontal vergence ranges (Risley rotary prisms), accommodative convergence/accommodation (AC/A) ratio (gradient method) and the near point of convergence (standard push-up technique). The short-term sample consisted of: 21 subjects in the control group, 26 in a corneal refractive therapy (CRT) treatment lenses group and 25 in a Seefree treatment lenses group. Those subjects were evaluated at baseline and at a 3-month follow-up visit. Twenty one subjects were old CRT wearers that attended a 3-year follow-up visit (long-term group). Results: A statistically significant difference over the 3-month treatment was found for divergence at distance: the break point decreased 1.4 ? (p?=?0.0006) in the CRT group and the recovery point increased 1.2 ? (p?=?0.001) in the Seefree group. Also, the Seefree group had an exophoric trend of 2.3 ? at near (p?=?0.02) and a base-out break decrease of 2.3 ? (p?=?0.03). For the long-term group, only the base-out break point at distant vision showed a statistically significant difference of 4.9 ? (p?=?0.02). Conclusions: OK induces minimal changes in the binocular function for either short-term or long-term periods, apart from a near exophoric trend over the short-term period. |
| En línea: | https://eprints.ucm.es/44379/1/s00417-016-3554-0.pdf |
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