Glasses Tech

November 9, 2010

Liquid Crystal Glasses: Feasibility and Safety of a New Modality for Treating Amblyopia

Filed under: Glasses 2006 — admin @ 3:34 am


Amblyopia is the most common cause of monocular visual impairment.1-2 Strabismus and anisometropia occurring during childhood are risk factors for amblyopia leading to various levels of poor vision and different responses to currently available treatments.3-5

To overcome the unknown factor of a child’s compliance, avoid the blemish of a mechanical patch, and enhance the child’s willingness to undergo the antiamblyopic regimen, electronically controlled liquid crystal glasses have been developed. Application of a small electric charge changes the spatial orientation of the suspended crystal molecules within the glasses. Thus, alternation between transmission of light (transparent) or opacification can be achieved at will. A liquid crystal lens in front of the sound eye is used as an intermittent flickering shutter switched between “on,” or occlusion (Figure 1), and “off,” or light transmission

Omry BenEzra, MD; Rafi Herzog, BSc; Evelyne Cohen, CO; Ilana Karshai, COpt; David BenEzra, MD, PhD

Glasses Tech