Aisha Vision Eye Clinic Sanghar

20/04/2026

19/04/2026

Interpretation of Amsler Grid
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What is Amsler Grid?
The Amsler Grid is a simple and quick screening tool used to assess the central visual field, particularly the function of the macula (central retina). It consists of a square grid with a central fixation dot.

Why is it done?
It helps in early detection and monitoring of macular disorders such as:
• Age-related macular degeneration (AMD)
• Macular edema
• Central serous retinopathy
• Macular hole

When is it done?
• When patients complain of distorted vision (straight lines look wavy)
• Difficulty in reading
• Blurred central vision
• Routine monitoring of macular diseases

How to Interpret the Amsler Grid (Based on Image)

🔹 Wavy/Distorted Lines (Metamorphopsia)
Straight lines appear bent or irregular
➡️ Indicates early macular disease such as AMD or macular edema

🔹 Central Scotoma
A white/blank area in the center
➡️ Suggests advanced macular damage or macular hole

🔹 Peripheral Distortion
Distortion away from the center
➡️ Indicates localized retinal pathology

🔹 Paracentral Scotoma
Missing area near the central fixation
➡️ Seen in early to moderate macular disease

🔹 Blurred or Gray Spot (Relative Scotoma)
Area appears faded or smudged
➡️ Suggests mild macular dysfunction or edema

🔹 Dark Dense Scotoma
Well-defined black spot
➡️ Indicates severe retinal damage or hemorrhage

🔹 Normal Amsler Grid
All lines straight, no distortion
➡️ Normal macular function

How to Perform the Test

• Wear near glasses if needed
• Hold grid at 30–35 cm
• Test one eye at a time
• Focus on the central dot
• Report any distortion, missing, or blurred areas

High-Yield Clinical Points

✔ Always test monocularly
✔ Any distortion = macular pathology until proven otherwise
✔ Useful for home monitoring (especially AMD patients)
✔ Sudden change requires urgent referral

Take Home Message

The Amsler Grid is a low-cost yet powerful tool for early detection of macular disorders. Recognizing patterns like distortion, scotomas, and blurring can help clinicians intervene early and prevent irreversible vision loss.

17/04/2026

Esophoric and exophoric eyes refer to types of latent eye deviations (called phorias)—they are not always visible but appear when the eyes are not actively focusing together (e.g., during a cover test).

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🔹 Esophoria (Esophoric Eyes)
• Definition: A tendency for one or both eyes to drift inward (towards the nose).
• When seen: When binocular vision is disrupted (like covering one eye).
• Cause: Overactive convergence or weak divergence.
• Symptoms:
• Eye strain (asthenopia)
• Headache
• Difficulty with near work
• Sometimes intermittent double vision

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🔹 Exophoria (Exophoric Eyes)
• Definition: A tendency for one or both eyes to drift outward (away from the nose).
• When seen: Also appears when fusion is broken.
• Cause: Weak convergence or strong divergence.
• Symptoms:
• Eye fatigue
• Blurred vision after reading
• Difficulty maintaining focus
• Occasional diplopia