Light as a drug: prospective randomized evaluation and comparison of the effect of decreased illumination on visual recovery after cataract surgery.

However, there was a highly significant lower light intensity used throughout the duration of each surgery in the digital group (19.5% ± 0.5%; range: 5% to 26%) compared with the traditional group (49.2% ± 0.6%; range: 40% to 80%; t test, P < .01) (Table 1 ).

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