Aloy Optical Clinic

21/05/2026

20/05/2026

VERTIGO: Why the Room Feels Like It’s Spinning
🧠 Vertigo is the false sensation that you or your surroundings are spinning, tilting, or moving even when you are standing still. It often happens because of problems involving the inner ear, balance nerves, or brain.
━━━━━━━━━━━━━━━
1️⃣ 💎 BENIGN POSITIONAL VERTIGO (BPPV)
👉 Most common cause of vertigo
👉 Tiny calcium crystals move into the wrong part of the inner ear
🤒 Symptoms:
• Brief spinning sensation triggered by:
→ Rolling in bed
→ Looking up
→ Bending over
• Nausea possible
🧪 Diagnosis:
• Dix-Hallpike positional test
💊 Treatment:
• Epley maneuver (main treatment)
• Vestibular therapy sometimes helpful
• Medications such as meclizine may help short-term nausea or dizziness, but they do NOT fix the underlying crystal problem and are usually not the main treatment
━━━━━━━━━━━━━━━
2️⃣ 🦻 VESTIBULAR NEURITIS / LABYRINTHITIS
👉 Usually caused by viral inflammation affecting the inner ear nerve
🤒 Symptoms:
• Sudden severe vertigo
• Nausea/vomiting
• Difficulty walking
• Hearing loss may occur in labyrinthitis
🧪 Diagnosis:
• Physical exam
• HINTS exam:
→ Head Impulse test
→ Nystagmus assessment
→ Test of Skew
• MRI sometimes needed to rule out stroke
💊 Treatment:
• Meclizine short-term
• Antinausea medications
• Steroids sometimes used
• Vestibular rehabilitation
━━━━━━━━━━━━━━━
3️⃣ 🌊 MÉNIÈRE DISEASE
👉 Inner ear fluid buildup
🤒 Symptoms:
• Recurrent vertigo attacks
• Ringing in the ears (tinnitus)
• Hearing loss
• Ear fullness/pressure
🧪 Diagnosis:
• Hearing tests
• Clinical evaluation
💊 Treatment:
• Low-salt diet
• Diuretics (“water pills”)
• Vestibular suppressants during attacks
• Sometimes injections or procedures
━━━━━━━━━━━━━━━
4️⃣ 🧠 STROKE OR BRAIN DISORDERS
🚨 Important dangerous cause
🤒 Symptoms:
• Sudden severe vertigo
• Double vision
• Slurred speech
• Weakness/numbness
• Trouble walking
• Severe imbalance
🧪 Diagnosis:
• Neurologic exam
• MRI/CT scan
💊 Treatment:
• Emergency stroke treatment
• Blood thinners or clot treatment depending on cause
⚠️ Vertigo WITH neurologic symptoms may be a medical emergency.
━━━━━━━━━━━━━━━
5️⃣ 💊 MEDICATIONS
👉 Some medicines can affect balance or the inner ear
Examples:
• Certain antibiotics
• Seizure medications
• Sedatives
• Alcohol
🧪 Diagnosis:
• Medication review
💊 Treatment:
• Adjusting or stopping the medication if appropriate
━━━━━━━━━━━━━━━
6️⃣ 😰 MIGRAINE-ASSOCIATED VERTIGO
👉 Vertigo linked to migraine activity
🤒 Symptoms:
• Dizziness episodes
• Sensitivity to light/sound
• Headache sometimes absent
🧪 Diagnosis:
• Clinical history
💊 Treatment:
• Migraine trigger control
• Migraine preventive medications
━━━━━━━━━━━━━━━
🚨 SEEK URGENT CARE IF VERTIGO OCCURS WITH:
• Weakness or numbness
• Slurred speech
• Severe headache
• Chest pain
• Fainting
• Double vision
• Difficulty walking

20/05/2026

The Snellen Chart is the most commonly used eye chart to measure visual acuity (sharpness of vision). It contains rows of letters that decrease in size from top to bottom. During an eye test, the patient reads the smallest line they can see clearly from a standard distance of 20 feet (6 meters).

History of the Snellen Chart

The Snellen Chart was developed in 1862 by Hermann Snellen, a Dutch ophthalmologist.

Before Snellen’s invention, there was no standard method for testing vision. He designed the chart using specially created letters called optotypes, where each letter follows a precise geometric design. This made vision testing more accurate and reliable.

The chart quickly became the worldwide standard for:

* Eye examinations
* Prescription of glasses
* Detection of refractive errors
* School vision screening
* Driving license vision tests

Understanding the Numbers

* 20/20 Vision → Normal vision
* 20/40 Vision → You see at 20 feet what a normal person sees at 40 feet
* 20/200 Vision → Severe vision loss

Uses of the Snellen Chart

* Measures visual acuity
* Detects refractive errors like:
* Myopia (near-sightedness)
* Hyperopia (far-sightedness)
* Astigmatism
* Helps prescribe glasses or contact lenses
* Monitors eye diseases and treatment progress
* Used in schools, hospitals, and driving assessments

How It Is Used

1. Patient stands 20 feet away
2. One eye is covered
3. Patient reads letters from top to bottom
4. Smallest readable line determines visual acuity

Interesting Fact

The large letter “E” at the top is designed so even people who cannot read well can identify its direction or shape.

08/05/2026

Progressive Lenses Explained — The Science Behind Seamless Vision

Have you ever wondered how progressive lenses allow someone to see clearly at distance, intermediate, and near — all through a single pair of glasses?

This image demonstrates a modern “Power Map & Visual Fields” design used in premium progressive lenses. It visually represents how lens power gradually changes from the top of the lens to the bottom, creating smooth transitions between viewing distances.

🔍 Understanding the Lens Zones

🔵 Distance Zone (Top Portion)

✔ Driving
✔ Watching TV
✔ Outdoor activities
✔ Classroom or presentations

This area provides the widest and clearest distance field with minimal blur.

🟢 Intermediate Zone (Middle Corridor)

✔ Computer work
✔ Cooking
✔ Dashboard viewing
✔ Conversations

This region is often called the “optical corridor” because it smoothly connects distance and near vision.

🟠 Near Zone (Lower Portion)

✔ Reading
✔ Mobile phone use
✔ Fine detail work
✔ Sewing or paperwork

The bottom section provides additional plus power for near tasks.

📈 What Does the Color Map Mean?

🔹 Blue = Distance power
🔹 Green/Yellow = Intermediate transition
🔹 Red = Maximum near addition power

Unlike bifocals, progressive lenses have NO visible line. The power changes progressively and continuously across the lens surface.

🧠 Why Lens Personalization Matters

Modern premium progressive lenses are customized according to:

✔ Pupillary distance (PD)
✔ Fitting height
✔ Frame shape and tilt
✔ Vertex distance
✔ Facial anatomy
✔ Reading habits
✔ Occupational needs

Benefits include:

✅ Wider visual fields
✅ Faster adaptation
✅ Better peripheral clarity
✅ Reduced swim effect
✅ More natural binocular vision

⚠ Common Adaptation Complaints

Some first-time wearers may experience:

❌ Peripheral distortion
❌ Difficulty using stairs
❌ Head movement adjustment
❌ Mild dizziness initially

Most patients adapt within days to weeks when the fitting is accurate.

💡 Advancement in Progressive Lens Technology

Earlier generations had:

❌ Narrow viewing corridors
❌ Higher unwanted astigmatism
❌ More peripheral blur

Modern digital freeform lenses now provide:

✅ Ultra-wide visual fields
✅ Customized optics for each eye
✅ Enhanced contrast sensitivity
✅ Better night driving performance
✅ Reduced peripheral distortion
✅ Faster adaptation
✅ Wavefront-guided optimization

Some advanced systems even use:

🔹 Artificial intelligence-assisted optimization
🔹 Eye movement tracking
🔹 Lifestyle-based lens algorithms
🔹 Dynamic binocular balancing
🔹 Personalized binocular calculations

👁️ Progressive lenses are no longer just multifocal glasses — they are precision-engineered visual systems designed around the individual wearer.

📌 Clinical Pearl:

Even the best progressive lens can fail if centration and fitting are inaccurate. Proper dispensing is just as important as lens technology.

07/05/2026

Have a regular yearly eye check-up.
"See Better, Perform Better, Live Better"

07/05/2026

Before

2F Senly Loy Bldg, Balili
Km.4, La Trinidad, Benguet
Across Tiongsan LT
8:30am to 9:30am & 1:30pm to 5:30pm
Mon to Sat

30/04/2026

Know the Difference: Ophthalmologist vs Optometrist

Follow our IG account for more.

Two Professionals. One Goal — Your Vision.
When it comes to eye care, many people often confuse the roles of an Ophthalmologist and an Optometrist. While both are essential in maintaining eye health, their training, scope of practice, and clinical responsibilities differ significantly. Understanding this difference helps patients make better decisions about where to seek care.

Ophthalmologist — The Medical & Surgical Eye Specialist

An ophthalmologist is a medical doctor (MD) who specializes in comprehensive eye care, including both medical and surgical management of eye diseases.

🔹 Diagnose and treat a wide range of ocular conditions
🔹 Perform eye surgeries (e.g., cataract, glaucoma, retinal procedures)
🔹 Prescribe medications for complex eye diseases
🔹 Manage ocular emergencies and advanced pathologies
🔹 Handle systemic diseases affecting the eye (e.g., diabetic retinopathy)

👉 Think of ophthalmologists as the highest level of eye care providers, especially when surgery or complex disease management is required.

Optometrist — The Primary Eye Care Provider

An optometrist (OD) focuses on vision care and early disease detection, playing a crucial role in routine eye health.

🔹 Perform comprehensive eye examinations
🔹 Prescribe glasses and contact lenses
🔹 Detect early signs of eye diseases
🔹 Manage common vision problems (refractive errors, dry eye, etc.)
🔹 Provide preventive and ongoing eye care

👉 Optometrists are often the first point of contact for patients and are key in maintaining long-term visual health.

🤝 Where They Overlap

Despite their differences, both professionals share important responsibilities:

✔️ Comprehensive eye exams
✔️ Detection of vision problems
✔️ Preventive eye care
✔️ Monitoring eye health over time

👉 In many cases, optometrists refer patients to ophthalmologists for advanced care, ensuring a collaborative approach to treatment.

⚖️ Why This Difference Matters

Understanding who to consult can save time, improve outcomes, and ensure appropriate care:

🔸 Routine vision check? → Visit an Optometrist
🔸 Sudden vision loss or eye disease? → Consult an Ophthalmologist
🔸 Need surgery? → Definitely an Ophthalmologist

💡 Clinical Insight

In modern eye care, the relationship between optometrists and ophthalmologists is complementary, not competitive. Together, they create a seamless patient care pathway—from early detection to advanced treatment.

💙 Final Thought:
No matter which professional you see first, the goal remains the same—protecting and preserving your vision for life.

👁️ Healthy Eyes. Better Life.

📢 Follow for more clinical insights & eye care awareness

15/02/2026

28/01/2026

12/11/2025