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Vision Transformer for Retinal Disease Detection

Multi-label Classification using Deep Learning

🏥 Medical AI

👁️ Retinal Images

🤖 Vision Transformer

Problem & Solution

🎯 Problem

  • Early detection of retinal diseases
  • Multiple diseases per image
  • Limited specialist availability
  • Need for automated screening

💡 Solution

  • Vision Transformer architecture
  • Multi-label classification
  • Advanced data augmentation
  • Real-time disease prediction

Model Architecture

Input

224×224 Retinal Images

ViT Backbone

Pretrained
google/vit-base-patch16-224

Classifier

768 → 512 → 256 → 10
LayerNorm + Dropout

Key Components:
• Patch-based attention mechanism
• Multi-head self-attention layers
• Position embeddings for spatial understanding
• Custom classification head for 10 diseases

Target Diseases (10 Classes)

🩸 Diabetic Retinopathy
👁️ Glaucoma
🔍 Macular Degeneration
☁️ Cataracts
💉 Hypertensive Retinopathy
👓 Myopic Retinopathy
🔴 Branch Retinal Vein Occlusion
⭕ Central Retinal Vein Occlusion
📉 Retinal Detachment
✅ Normal/Healthy

Multi-label Classification: One image can have multiple diseases simultaneously

Implementation Highlights

🔧 Training Features

  • Advanced data augmentation (Albumentations)
  • Differential learning rates
  • Cosine annealing scheduler
  • Gradient clipping & regularization

📊 Inference Features

  • Test-time augmentation (TTA)
  • Confidence scoring
  • Batch prediction support
  • Probability thresholding
Loss Function: BCEWithLogitsLoss for multi-label classification
Optimizer: AdamW with weight decay
Metrics: Accuracy, Classification Report, Confusion Matrix

Impact & Applications

🎯 Clinical Impact

  • Early disease detection
  • Reduced diagnostic time
  • Screening automation
  • Healthcare accessibility

🚀 Technical Advantages

  • Transformer attention mechanisms
  • Transfer learning benefits
  • Robust augmentation pipeline
  • Production-ready inference

🔮 Future Directions

Integration with medical imaging systems, real-time mobile deployment, and continuous learning from new data