Related Experiment Video
Updated: Feb 27, 2026

03:59
Surgical Correction for Pediatric Epiblepharon and Trichiasis
Published on: July 8, 2025
672
Gold in the balance: How does patient posture affect eyelid closure?
1a Moorfields Eye Hospital, NHS Foundation Trust , London , United Kingdom.
Orbit (Amsterdam, Netherlands)
|July 6, 2017
Summary
Upper eyelid gold weights for facial nerve palsy can leave eyes vulnerable when lying flat. Sleeping slightly upright may improve eye closure and protect the ocular surface.
Area of Science:
- Ophthalmology
- Facial Nerve Surgery
Background:
- Facial nerve palsy can cause lagophthalmos, leading to ocular surface exposure.
- Upper eyelid gold weight implantation is a surgical option to improve eyelid closure.
Observation:
- A retrospective audit examined four patients with gold weights implanted over five years ago.
- Eyelid position was assessed at 0°, 45°, and 90° inclinations.
Findings:
- At 0° (lying flat), all patients exhibited significant lagophthalmos with the upper eyelid remaining open, exposing the ocular surface.
- At 45° and 90° (reclined and upright), eyelids closed substantially, protecting the ocular surface.
Implications:
- Gravity influences the effectiveness of upper eyelid gold weights in achieving complete closure.
- Patients with inadequate closure may benefit from sleeping in a slightly upright position to enhance ocular surface protection.
Related Concept Videos
Accessory Structures of the Eye
4.1K
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
4.1K
Muscles of the Eye
4.9K
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...
4.9K
Anatomical Positions
20.8K
In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
20.8K
Angle Closure Glaucoma: Treatment
1.4K
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
1.4K

