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What conditions really look like
One street, seven ways of seeing it. Pick a condition and drag the severity slider - then try the same street with your own prescription.
Menu, held at arm's lengthGrilled sea bass, lemon butter, samphire - 18. Ask about today's specials and the small print at the bottom of the card.
Astigmatism
Edges smear in one direction, and lights grow tails.
The cornea is shaped more like a rugby ball than a football, so it focuses light along two different axes. One direction lands sharp while the other lands blurred - which is why streetlights streak.
Correction: A toric lens has different power in different meridians, cancelling out the uneven curve.