A cataract is a clouding of your eye’s natural lens, the part that focuses light onto the retina, much as a camera lens focuses light onto film. Cataracts are usually just part of aging: they come on over months or years, and if you live long enough you can expect one, along with gray hair and wrinkles. Vision turns blurry or fuzzy, colors lose their brilliance, lights throw halos and glare, night driving gets harder, and your glasses prescription keeps changing.

Cataract surgery is in the midst of a technological revolution, and it begins before we ever touch your eye. The lens we implant is chosen from measurements, so we take them on more than one instrument rather than trust a single reading. That is what the scans below are doing.