Originally Posted by
Peter J Shaw OD
Base curves are as important as ever but have you ever thought why? Base curve affects binocularity, the industry has gone to as thin an flat as possible because it is easier to polish flat back curves. But flat lenses give very poor optical performance. Optimizing the base will reduce pincushioning, barrel, and vergence demand and also reduce effects of dynamic aniseikonia when properly specified. Digital lenses may in fact perform worse than traditional lenses because they are just too flat. there is a new digitally surfaced lens that manages binocular distortions. It is available only to optometrists (or opticians working with optometrists) due to additional binocular vision measurement requirements.
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