The effect of blue-blocking and neutral intraocular lenses on circadian photoentrainment and sleep one year after cataract surgery

作者：Brondsted Adam Elias; Haargaard Birgitte; Sander Birgit; Lund Andersen Henrik; Jennum Poul; Kessel Line

来源：Acta Ophthalmologica, 2017, 95(4): 344-351.

DOI：10.1111/aos.13323

• actigraphy
• cataract
• circadian photoentrainment
• melatonin
• pupillometry

PurposeTo compare the long-term effect on circadian photoentrainment and sleep in patients implanted with neutral and blue-blocking intraocular lenses 1year after cataract surgery.
MethodsRandomized, controlled trial involving 67 patients with age-related cataract. Intervention was cataract surgery with implantation of either a neutral or a blue-blocking intraocular lens (IOL). Main outcome was activation of the intrinsically photosensitive retinal ganglion cells (ipRGC) measured by chromatic pupillometry. The circadian rhythm was analysed by 24-hr melatonin profiles and actigraphy; the latter was also used to determine objective sleep quality. The Pittsburgh Sleep Quality Index determined subjective sleep quality.
ResultsOne year after surgery, peak melatonin concentration was 3.3pg/ml (95% CI, 2-5.5) corresponding to 50% lower for the participants allocated to blue-blocking IOLs compared with participants allocated to neutral IOLs. Compared with preoperative levels, the ipRGC response had increased by 13.7% (95% confidence interval [CI], 3.2-22.6) 1year after surgery. Objective sleep quality was also improved as the time of wakefulness after sleep onset had improved by 5min (95% CI, 1-10) for the entire population while sleep efficiency had increased by two percentage points (95% CI, 0.42-3.65) although exclusively, for the participants allocated to blue-blocking IOLs.
ConclusionBlue-blocking IOLs increased sleep efficiency but lowered nocturnal melatonin secretion compared with neutral IOLs. Cataract surgery improved the response of ipRGCs and sleep quality. However, the effect of cataract surgery on sleep quality may be unrelated to circadian photoentrainment.

• 出版日期2017-6