12. July 2014 13:07
Infantile nystagmus is not a very common issue, but when it does occur, it may have serious effects on a child’s vision. Consequently, researchers keep looking for new ways of treating it. Recently, a team of investigators have conducted a study assessing the effectiveness of soft and rigid gas permeable contact lenses in managing the condition.
The study was randomised, controlled and had an intention-to-treat design. It included 24 patients with infantile nystagmus, who were randomly assigned to two groups. The groups differed in the sequence of treatment they received.
The researchers measured the intensity of nystagmus at 1.2 and 0.4 m. In addition, they evaluated the patients’ best corrected visual acuity and gaze-dependent visual acuity.
Having collected and analysed the data, the authors of the study found no statistically significant differences in any of the evaluated characteristics of nystagmus between soft and rigid contact lenses as well as spectacles. The best-corrected visual acuity turned out to be worse in the case of soft contact lenses, but the difference was small.
The authors of the study concluded that contact lenses are as effective as glasses in treating nystagmus and that rigid gas permeable contacts provide slightly better vision than soft ones in patients with this condition.