Pressure on one side of the face through the night does lead to fluid collection or oedema on the side of the face particularly the delicate eye area that is at a lower level. This gradually improves as the day progresses. Muscular weakness
of the ocular area may be due to a few causes like myaesthenia , facial palsy
, vitamin deficiency
particularly in diabetics and even throid ophthalmopathy. however, there are often other complaints like double vision
as well. Try to sleep on your left side or on your back for a few days. Use icepacks on the affected eye as well. Use an antiinflammatory eye drop
preparation in the eye for a few days. The eye should revert to normal. if the condition fails to resolve or worsens, a few blood tests to rule out abnormal blood sugar levels and thyroid levels may be done.