Presbyopia correction and stereopsis

Dr Artal looks at the available options for treating presbyopia and highlights study results involving a new alternative, the KAMRA inlay, which he believes is a promising option for presbyopes without compromising stereopsis.

As there is no cure for this effect of ageing, treatments encompass various attempts to compensate for the eye's inability to accommodate. The most obvious solution is to wear corrective glasses for near tasks. However, a growing number of presbyopes find corrective eyewear an intrusion on their lifestyle and seek surgical correction.

Surgical solutions

The same concept can also be applied to refractive lens exchange or cataract surgery, where one lens is optimized for distance vision and the other for near vision. In presbyopic cataract patients, success rates are approximately 80%.2 While monovision approaches are considered effective and reasonable therapeutic modalities for correcting presbyopia, one potential problem is a significant reduction of stereoacuity.1