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Summary

Sleeping on one side may cause asymmetrical eyelid laxity in normal individuals. Studies show a significant correlation between habitual sleeping side and increased laxity in the ipsilateral upper eyelid.

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Area of Science:

  • Ophthalmology
  • Oculoplastics
  • Aging research

Background:

  • Eyelid elasticity changes can occur with age.
  • Asymmetrical changes in facial features are common, but specific factors influencing eyelid laxity are not well-understood.

Purpose of the Study:

  • To investigate the hypothesis that eyelid elasticity changes asymmetrically in normal individuals.
  • To determine if eyelid laxity correlates with the habitual sleeping side.

Main Methods:

  • Prospective study of 262 normal patients (age ≥55) without facial nerve palsy or eyelid trauma/surgery.
  • Patients reported their customary sleeping side to an orthoptist.
  • Ocular plastic surgeons, masked to sleeping history, measured upper eyelid laxity using calipers.

Main Results:

  • 70.22% of patients exhibited greater upper eyelid laxity on their customary sleeping side.
  • A statistically significant difference (p<0.001) was found in eyelid laxity between the sleeping and non-sleeping sides.

Conclusions:

  • Normal individuals demonstrate a correlation between their habitual sleeping side and ipsilateral upper eyelid laxity.
  • Sleeping position may be a contributing factor to asymmetrical eyelid aging and laxity.