When I wake up at night to have a glass of water I cannot open my eyes easily, they are very heavy with a feeling of grains of sand, burning? it takes me a few minutes to be able to open it. (it started with the right eye but now both), I saw an ophthalmologist and an orthopedist, the ophthalmologist examination and especially the eye do not show any abnormalities. Should I see another ophthalmologist for a second opinion or a neurologist? Thank you.