ORBICULARIS OCULI

• Origin

Medial orbital margin,

Medial palpebral ligament,

Lacrimal bone

• Insertion

Lateral palpebral raphe,

Skin surrounding the eyes

• Agonist(s)

- Corrugator supercilii

- Procerus

- Levator labii superiors

• Antagonist(s)

- Levator palpebrae superioris (for eyelid elevation)

• Function

- Closes eyelids (blinking, squinting, winking)

- Assists in drainage of tears by compressing the lacrimal sac.

TRIGGER POINT(S)

• Location

Trigger points are commonly found around the medial and lateral edges of the muscle, particularly near the medial palpebral ligament and along the orbital rim.

• Pain Referral Pattern

Pain may be felt locally around the eyes and can radiate to the eyebrows, temples, and occasionally down toward the upper cheek.

This can result in feelings of tension or discomfort around the eye region, often mistaken for sinus or tension headaches.

Pain Pattern

• Potential Causes

• Excessive squinting or eye strain

• Extended periods of reading, computer work, or screen time

• Environmental factors like bright light or wind exposure

• Facial expressions that involve frequent tightening around the eyes

• Poor vision leading to squinting

• Prevention Tips

• Take regular breaks from screens to reduce eye strain

• Maintain good lighting when reading or working

• Consider using sunglasses to protect against glare and UV rays

• Practice gentle stretching exercises for the facial muscles

• Avoid habitual squinting by addressing any vision issues with corrective lenses if needed.