1. Ocular System: Primary system - eye structures
2. Nervous System: Sensory innervation (Trigeminal nerve)
3. Vascular System: Blood supply to eye and surrounding structures
4. Musculoskeletal System: Extraocular muscles, orbital structures

Sensory Nerves:

• Corneal nerves: Most sensitive; detect pain, temperature, touch
• Conjunctival nerves: Detect irritation, foreign bodies
• Iris nerves: Detect inflammation (accommodates pain)
• Orbital nerves: Detect deep orbital pain

Trigeminal Nerve (CN V):

• V1 (Ophthalmic): Main sensory nerve to eye and orbit
• V2 (Maxillary): Supplies lower eyelid, cheek, upper teeth
• V3 (Mandibular): Supplies jaw, lower teeth, referred pain paths

Pain Pathways:

• Superficial pain: Rapid, sharp, well-localized
• Deep pain: Slow, aching, poorly localized

External Structures:

• Cornea (most pain-sensitive)
• Conjunctiva
• Sclera
• Eyelids

Internal Structures:

• Iris and ciliary body
• Retina (pain-insensitive)
• Optic nerve

Surface (Orbital) Pain:

• Originates from external eye structures
• Sharp, stabbing, well-localized
• Worse with blinking or touching
• Common causes: corneal abrasion, foreign body, dry eye

Deep (Periorbital) Pain:

• Originates from internal structures
• Dull, aching, poorly localized
• Worse with eye movement
• Common causes: sinusitis, optic neuritis, inflammation

Referred Pain:

• Originates from non-ocular structures
• Often radiates to eye area
• Common sources: teeth, sinuses, temporomandibular joint, temples

• Acute: Seconds to days (trauma, infection)
• Subacute: Days to weeks (inflammatory conditions)
• Chronic: Months (dry eye, tension, referred pain)

Corneal:

• Foreign body
• Corneal abrasion/erosion
• Contact lens-related injury
• Dry eye syndrome
• Exposure keratitis

Conjunctival:

• Conjunctivitis (viral, bacterial, allergic)
• Subconjunctival hemorrhage
• Pinguecula/Scleritis

Eyelid:

• Blepharitis
• Stye (hordeolum)
• Chalazion
• Eyelid laceration

Uveal:

• Iritis (anterior uveitis)
• Posterior uveitis
• Endophthalmitis

Glaucoma:

• Acute angle-closure glaucoma
• Acute congestive glaucoma

Orbital:

• Optic neuritis
• Orbital cellulitis
• Thyroid eye disease
• Orbital tumor (rare)

Sinus:

• Frontal sinusitis
• Ethmoid sinusitis
• Maxillary sinusitis

Dental:

• Tooth abscess
• Teeth grinding (bruxism)
• TMJ disorder

Neurological:

• Migraine
• Tension headache
• Trigeminal neuralgia
• Cluster headaches

• Age: Children and elderly at higher risk for certain types
• Genetics: Family history of glaucoma, migraines
• Anatomy: Shallow anterior chambers
• Season: Higher allergy-related pain in spring/fall

• Digital device use: Extended screen time
• Contact lens wear: Improper use or hygiene
• Eye rubbing: Mechanical irritation
• Allergies: Uncontrolled allergic eye disease
• Smoking: Irritates ocular surfaces
• Dehydration: Affects tear film
• Stress: Increases muscle tension

Foreign Body:

• Sharp, stabbing pain
• Localized to specific area
• Worse with blinking
• Sensation of something in eye
• Tearing and redness

Dry Eye:

• Burning, gritty sensation
• Worse at end of day
• Associated with screen time
• Variable pain intensity

Iritis:

• Deep, aching pain
• Photophobia (light sensitivity)
• Redness, especially around iris
• Blurred vision
• Pain with near work

Acute Glaucoma:

• Severe, throbbing pain
• Headache, nausea
• Halos around lights
• Red, hard eye
• Vision loss

Migraine:

• Pain behind one eye
• Throbbing quality
• Associated headache
• Visual aura possible
• Photophobia

• Redness
• Tearing or dry eyes
• Blurred vision
• Light sensitivity
• Foreign body sensation
• Discharge
• Eyelid swelling

• Headache
• Nausea/vomiting
• Sinus congestion
• Fever
• Dental pain
• Jaw pain

• Severe, sudden pain
• Vision loss
• Significant redness
• Nausea and vomiting
• Fever
• Proptosis (bulging)
• Neurological symptoms

Pain Characteristics:

• Where is the pain located?
• What does the pain feel like?
• How severe is the pain (1-10)?
• When did it start?
• What makes it better or worse?

Associated Features:

• Any vision changes?
• Redness?
• Light sensitivity?
• Discharge?
• Tearing?

Exacerbating Factors:

• Worse with eye movement?
• Worse with light?
• Worse with blinking?
• Worse at particular time of day?

Medical History:

• Previous eye problems?
• Contact lens use?
• Recent trauma?
• Current medications?
• Known allergies?

Visual Acuity Testing:

• Measure visual acuity each eye
• Compare with baseline if known

External Examination:

• Observe for redness
• Check eyelid position
• Look for swelling or lesions

Slit Lamp Examination:

• Detailed assessment of anterior segment
• Check for foreign bodies
• Evaluate corneal health
• Assess tear film

Basic Evaluation:

• Visual acuity
• Refraction
• Intraocular pressure
• Pupillary response

Advanced Testing:

• Corneal staining (fluorescein)
• Tear film assessment
• Gonioscopy (for glaucoma)
• Visual field testing

Imaging (if indicated):

• CT scan sinuses/orbit
• MRI brain/orbit
• Orbital ultrasound

NLS Screening:

• Inflammatory markers
• Energetic patterns in ocular region
• Nerve function assessment
• Systemic inflammation

Ayurvedic Assessment:

• Dosha evaluation (Pitta and Vata)
• Systemic heat patterns
• Nervous system assessment
• Digestive fire (Agni)

Lab Testing (if indicated):

• Complete blood count
• Thyroid function
• Allergy testing
• Inflammatory markers

• Severe, sudden pain with vision loss
• Chemical burns
• Penetrating trauma
• Acute angle-closure glaucoma
• Orbital cellulitis
• Endophthalmitis

Dry Eye:

• Artificial tears
• Anti-inflammatory drops
• Punctal plugs
• Lifestyle modifications

Infections:

• Antibiotic drops/ointments
• Antiviral medications
• Supportive care

Inflammation:

• Topical steroids
• NSAID drops
• Cycloplegic drops

Glaucoma:

• Pressure-lowering drops
• Laser treatment
• Surgery

Acute Emergencies:

• Immediate referral
• Emergency pain management
• Surgical intervention if needed

• Over-the-counter pain relievers
• Cool compresses
• Dark rest
• Lubricating drops

Pitta-Pacifying:

• Cooling herbs and foods
• Avoid spicy and sour foods
• Triphala for eye health
• Netra Tarpana (eye rejuvenation)

Vata-Pacifying:

• Warm, nourishing foods
• Regular routine
• Abhyanga (oil massage)
• Adequate rest

Herbal Support:

• Triphala - eye tonic
• Amla - vitamin C, antioxidant
• Turmeric - anti-inflammatory
• Rose water - cooling

Rest:

• Close eyes in dark room
• Take breaks from screens
• Sleep adequately

Cold Compress:

• Clean washcloth with cold water
• Apply for 10-15 minutes
• Repeat as needed

Lubrication:

• Over-the-counter artificial tears
• Blink regularly
• Use humidifier

Dry Eye:

• Increase omega-3 intake
• Use warm compresses
• Reduce screen time

Eye Strain:

• 20-20-20 rule
• Proper lighting
• Regular breaks

Allergies:

• Cold compresses
• Allergy drops
• Avoid allergens

• Regular breaks from screens
• Proper lighting
• Adequate lubrication
• Healthy diet

• Humidifier in dry environments
• Air purifier
• UV protection
• Dust control

• Adequate sleep
• Stress management
• Hydration
• Regular exercise

Mild Conditions:

• Resolve with self-care in days
• Excellent prognosis
• Low recurrence with prevention

Moderate Conditions:

• Improve with treatment in weeks
• Good prognosis
• May require maintenance

Severe Conditions:

• Require urgent treatment
• Prognosis varies
• Early intervention critical

• Generally excellent
• Most causes treatable
• Early intervention best
• Chronic conditions manageable

Q: Why does my eye hurt when I blink? A: Blinking causes movement of the ocular surface. Pain with blinking often indicates surface irritation from dry eye, foreign body, corneal abrasion, or conjunctivitis. Evaluation is recommended if persistent.

Q: Can eye pain be caused by stress? A: Stress can contribute to eye pain through muscle tension (especially in the face and neck), increased eye strain from disrupted sleep, and exacerbation of conditions like dry eye and migraines. Stress management can help reduce symptoms.

Q: When should I worry about eye pain? A: Seek immediate care for severe sudden pain, pain with vision loss, pain after trauma or chemical exposure, or pain accompanied by nausea/vomiting. Schedule an appointment for persistent mild-moderate pain.

Q: Can dental problems cause eye pain? A: Yes, referred pain from dental issues (especially upper teeth) or temporomandibular joint disorders can radiate to the eye area. This is called referred pain and requires dental evaluation.

Q: How do I prevent eye pain from screen use? A: Follow the 20-20-20 rule (every 20 minutes, look 20 feet away for 20 seconds), ensure proper lighting, use lubricating drops, maintain appropriate screen distance, and take regular breaks.

This content is for educational purposes only.