| TAZ-TFG-2019-1995 |
Calidad óptica con diferentes tipos de lentes de contacto para el control de la miopía
Bilba, Andreea
Remón Martín, Laura (dir.) ; Marcellán Vidosa, Mª Concepción (dir.)
Universidad de Zaragoza,
CIEN,
2019
Física Aplicada department, Optica area
Graduado en Óptica y Optometría
Tipo de Trabajo Académico: Trabajo Fin de Grado
Notas: ABSTRACT Myopia is a refractive defect that affects 27% of the world population. Its incidence increases in an accelerated way becoming a public health problem, with an economic and social impact. Recent studies have observed a direct connection between the myopia development with a growth of the axial length of the eyeball, due to the refraction in myopic is hypermetropized towards the periphery and can lead to the eyeball growth as a mechanism to achieve clarity in it. The main goal of this study is to evaluate the subjective visual quality with two types of Dual-Focus contact lenses to 10 patients in total. Viasual acuity was assessed in photopic and scotopic conditions and with 30% contrast. Also, it was measured deep vision (or stereopsis) and the measurement of night vision halos. In the end, it was carried out a questionnaire of quality and comfort to patients after putting them on. The results obtained are that Lens A has a higher visual quality than Lens B. Regarding visual acuity, both lenses provide good results. Visual acuity with low contrast decreases slightly with Lens B. Stereopsis is worse with Lens B and additionally, this produces more halos. Finally, patients have difficulty focusing going from far to close visión using Lens A the first days, symptom that with Lens B doesn’t happen. And besides, the use of Lens A is more comfortable than Lens B.
Notas: ABSTRACT Myopia is a refractive defect that affects 27% of the world population. Its incidence increases in an accelerated way becoming a public health problem, with an economic and social impact. Recent studies have observed a direct connection between the myopia development with a growth of the axial length of the eyeball, due to the refraction in myopic is hypermetropized towards the periphery and can lead to the eyeball growth as a mechanism to achieve clarity in it. The main goal of this study is to evaluate the subjective visual quality with two types of Dual-Focus contact lenses to 10 patients in total. Viasual acuity was assessed in photopic and scotopic conditions and with 30% contrast. Also, it was measured deep vision (or stereopsis) and the measurement of night vision halos. In the end, it was carried out a questionnaire of quality and comfort to patients after putting them on. The results obtained are that Lens A has a higher visual quality than Lens B. Regarding visual acuity, both lenses provide good results. Visual acuity with low contrast decreases slightly with Lens B. Stereopsis is worse with Lens B and additionally, this produces more halos. Finally, patients have difficulty focusing going from far to close visión using Lens A the first days, symptom that with Lens B doesn’t happen. And besides, the use of Lens A is more comfortable than Lens B.
Permalink:
El registro pertenece a las siguientes colecciones:
trabajos-academicos-universidad-zaragoza > centro > facultad-de-ciencias
trabajos-academicos-universidad-zaragoza > trabajos-fin-grado