Computerised dynamic posturography for postural control assessment in subjects wearing multifocal contact lenses dedicated for myopia control.
Ophthalmic Physiol Opt
; 41(3): 486-495, 2021 05.
Article
en En
| MEDLINE
| ID: mdl-33932043
ABSTRACT
PURPOSE:
To measure body balance using computerised dynamic posturography in young adults wearing multifocal contact lenses (MFCL) with high addition powers designed for myopia control.METHODS:
Twenty-four young adults (mean age 24 years) wearing distance-centred soft MFCL (SwissLens Orbis Relax) with two different central zones (3 and 4.5 mm), two addition powers (+2 D, +4 D) and single vision control lenses. Body balance was measured on a moving platform under three viewing conditions (1) eyes open when fixating on letters at 3 m or (2) at 40 cm, as well as (3) with the eyes closed. Parameters of body stabilisation were analysed the rate of body stabilisation (τrelax ), the stabilisation time (Tmax ) and the number of oscillations (Nosc ).RESULTS:
The MFCLs did not produce a significant difference in the mean values of the analysed parameters (p > 0.05 for τrelax, Tmax, Nosc ). However, a positive correlation was found between pupil size and Nosc and Tmax (p < 0.01), suggesting an effect of the +4 D add with the 3 mm central zone on the posturographic parameters. As was expected, dynamic body stabilisation was better with eyes open versus eyes closed (p < 0.005).CONCLUSIONS:
Distance-centred MFCLs with a medium addition (+2 D) do not disturb body stabilisation in young adults. However, high additions (+4 D) with a small central zone may affect body balance control in subjects with large pupil size.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Refracción Ocular
/
Agudeza Visual
/
Diagnóstico por Computador
/
Lentes de Contacto Hidrofílicos
/
Equilibrio Postural
/
Anteojos
/
Miopía
Tipo de estudio:
Diagnostic_studies
Límite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Ophthalmic Physiol Opt
Año:
2021
Tipo del documento:
Article
País de afiliación:
Polonia