Blue Light Glasses Effectiveness - Complete Guide

# Blue Light Science for Programming

class BlueLightAnalysis {
  constructor() {
    this.blueLightSpectrum = {
      wavelength: {
        range: '380-500 nanometers',
        peak: '450-480 nanometers',
        harmful: '380-450 nanometers',
        beneficial: '450-500 nanometers'
      },
      
      sources: {
        natural: {
          sunlight: 'High intensity blue light',
          sky: 'Scattered blue light',
          reflection: 'Reflected blue light'
        },
        
        artificial: {
          led: 'High blue light content',
          fluorescent: 'Moderate blue light',
          incandescent: 'Low blue light',
          screens: 'Variable blue light'
        }
      },
      
      effects: {
        positive: {
          alertness: 'Increases alertness and focus',
          mood: 'Improves mood and well-being',
          circadian: 'Regulates sleep-wake cycle',
          cognitive: 'Enhances cognitive performance'
        },
        
        negative: {
          eyeStrain: 'Causes digital eye strain',
          sleep: 'Disrupts sleep patterns',
          headaches: 'Triggers headaches and migraines',
          fatigue: 'Increases eye fatigue'
        }
      }
    };
  }
  
  analyzeBlueLightExposure(screenTime, screenType, environment) {
    const exposure = {
      daily: this.calculateDailyExposure(screenTime, screenType),
      cumulative: this.calculateCumulativeExposure(screenTime, screenType),
      risk: this.assessRiskLevel(screenTime, screenType, environment),
      recommendations: this.generateRecommendations(screenTime, screenType)
    };
    
    return exposure;
  }
  
  calculateDailyExposure(screenTime, screenType) {
    const screenTypes = {
      led: { blueLight: 0.3, intensity: 1.0 },
      oled: { blueLight: 0.25, intensity: 0.9 },
      lcd: { blueLight: 0.2, intensity: 0.8 },
      crt: { blueLight: 0.15, intensity: 0.6 }
    };
    
    const screen = screenTypes[screenType] || screenTypes.led;
    const exposure = screenTime * screen.blueLight * screen.intensity;
    
    return {
      hours: screenTime,
      blueLightIntensity: exposure,
      riskLevel: this.categorizeRisk(exposure)
    };
  }
  
  calculateCumulativeExposure(screenTime, screenType) {
    const daily = this.calculateDailyExposure(screenTime, screenType);
    const weekly = daily.blueLightIntensity * 7;
    const monthly = weekly * 4.33;
    const yearly = monthly * 12;
    
    return {
      daily: daily.blueLightIntensity,
      weekly: weekly,
      monthly: monthly,
      yearly: yearly
    };
  }
  
  assessRiskLevel(screenTime, screenType, environment) {
    let riskScore = 0;
    
    // Screen time risk
    if (screenTime >= 8) riskScore += 40;
    else if (screenTime >= 6) riskScore += 30;
    else if (screenTime >= 4) riskScore += 20;
    else if (screenTime >= 2) riskScore += 10;
    
    // Screen type risk
    const screenRisks = {
      led: 30,
      oled: 25,
      lcd: 20,
      crt: 15
    };
    riskScore += screenRisks[screenType] || 25;
    
    // Environment risk
    if (environment === 'dark') riskScore += 20;
    else if (environment === 'dim') riskScore += 10;
    else if (environment === 'bright') riskScore += 5;
    
    return {
      score: riskScore,
      level: riskScore >= 70 ? 'High' : 
             riskScore >= 50 ? 'Medium' : 
             riskScore >= 30 ? 'Low' : 'Minimal',
      factors: {
        screenTime: screenTime,
        screenType: screenType,
        environment: environment
      }
    };
  }
  
  categorizeRisk(exposure) {
    if (exposure >= 2.4) return 'High Risk';
    if (exposure >= 1.8) return 'Medium Risk';
    if (exposure >= 1.2) return 'Low Risk';
    return 'Minimal Risk';
  }
  
  generateRecommendations(screenTime, screenType) {
    const recommendations = [];
    
    if (screenTime >= 8) {
      recommendations.push('Consider blue light glasses for extended use');
      recommendations.push('Take regular breaks every 2 hours');
      recommendations.push('Use screen filters or software');
      recommendations.push('Optimize screen brightness and contrast');
    } else if (screenTime >= 6) {
      recommendations.push('Blue light glasses may be beneficial');
      recommendations.push('Take breaks every 2-3 hours');
      recommendations.push('Adjust screen settings');
    } else if (screenTime >= 4) {
      recommendations.push('Monitor eye strain symptoms');
      recommendations.push('Take regular breaks');
      recommendations.push('Consider blue light glasses if experiencing discomfort');
    } else {
      recommendations.push('Current screen time is generally safe');
      recommendations.push('Maintain good eye hygiene');
      recommendations.push('Take breaks as needed');
    }
    
    return recommendations;
  }
}

class BlueLightGlassesTypes {
  constructor() {
    this.types = {
      prescription: {
        name: 'Prescription Blue Light Glasses',
        description: 'Custom prescription lenses with blue light filtering',
        features: {
          customization: 'Custom prescription and blue light filtering',
          accuracy: 'Precise vision correction',
          comfort: 'Optimized for individual needs',
          durability: 'High-quality materials'
        },
        pros: ['Custom fit', 'Precise correction', 'Professional quality', 'Long-lasting'],
        cons: ['Higher cost', 'Requires eye exam', 'Longer delivery time'],
        priceRange: '$100-500',
        suitability: 'Users with vision correction needs'
      },
      
      nonPrescription: {
        name: 'Non-Prescription Blue Light Glasses',
        description: 'Ready-to-wear glasses with blue light filtering',
        features: {
          availability: 'Immediate availability',
          variety: 'Wide range of styles',
          cost: 'Lower cost option',
          convenience: 'No prescription required'
        },
        pros: ['Affordable', 'Immediate availability', 'Wide selection', 'No prescription needed'],
        cons: ['No vision correction', 'One-size-fits-all', 'Limited customization'],
        priceRange: '$20-150',
        suitability: 'Users without vision correction needs'
      },
      
      computer: {
        name: 'Computer Glasses',
        description: 'Specialized glasses for computer use',
        features: {
          magnification: 'Slight magnification for screen viewing',
          blueLight: 'Blue light filtering',
          antiGlare: 'Anti-glare coating',
          comfort: 'Optimized for close-up work'
        },
        pros: ['Specialized for computer use', 'Reduces eye strain', 'Anti-glare protection'],
        cons: ['Limited use cases', 'May not be suitable for distance'],
        priceRange: '$50-200',
        suitability: 'Heavy computer users'
      },
      
      gaming: {
        name: 'Gaming Blue Light Glasses',
        description: 'Glasses designed for gaming and extended screen use',
        features: {
          enhanced: 'Enhanced blue light filtering',
          style: 'Gaming-focused design',
          comfort: 'Extended wear comfort',
          performance: 'Optimized for gaming performance'
        },
        pros: ['Enhanced filtering', 'Gaming-focused design', 'Comfortable for long sessions'],
        cons: ['Higher cost', 'Limited style options', 'Gaming-specific design'],
        priceRange: '$80-300',
        suitability: 'Gamers and heavy screen users'
      }
    };
  }
  
  evaluateGlassesType(glassesType, userNeeds) {
    const evaluation = {
      suitability: this.assessSuitability(glassesType, userNeeds),
      effectiveness: this.assessEffectiveness(glassesType),
      value: this.assessValue(glassesType),
      comfort: this.assessComfort(glassesType)
    };
    
    return evaluation;
  }
  
  assessSuitability(glassesType, userNeeds) {
    const suitabilityMatrix = {
      prescription: {
        visionCorrection: 10,
        noVisionCorrection: 3,
        budget: 4,
        immediate: 3,
        customization: 10
      },
      nonPrescription: {
        visionCorrection: 2,
        noVisionCorrection: 9,
        budget: 9,
        immediate: 10,
        customization: 4
      },
      computer: {
        visionCorrection: 6,
        noVisionCorrection: 8,
        budget: 7,
        immediate: 8,
        customization: 6
      },
      gaming: {
        visionCorrection: 5,
        noVisionCorrection: 8,
        budget: 5,
        immediate: 7,
        customization: 7
      }
    };
    
    const factors = suitabilityMatrix[glassesType];
    const totalScore = Object.values(factors).reduce((sum, score) => sum + score, 0);
    const averageScore = totalScore / Object.keys(factors).length;
    
    return {
      score: averageScore,
      rating: averageScore >= 8 ? 'Excellent Match' : 
              averageScore >= 6 ? 'Good Match' : 
              averageScore >= 4 ? 'Fair Match' : 'Poor Match',
      factors: factors
    };
  }
  
  assessEffectiveness(glassesType) {
    const effectivenessScores = {
      prescription: 9,
      nonPrescription: 7,
      computer: 8,
      gaming: 8
    };
    
    return {
      score: effectivenessScores[glassesType] || 6,
      rating: effectivenessScores[glassesType] >= 8 ? 'Highly Effective' : 
              effectivenessScores[glassesType] >= 6 ? 'Moderately Effective' : 'Limited Effectiveness'
    };
  }
  
  assessValue(glassesType) {
    const valueFactors = {
      prescription: {
        cost: 4,
        durability: 9,
        effectiveness: 9,
        convenience: 6
      },
      nonPrescription: {
        cost: 9,
        durability: 6,
        effectiveness: 7,
        convenience: 9
      },
      computer: {
        cost: 7,
        durability: 7,
        effectiveness: 8,
        convenience: 8
      },
      gaming: {
        cost: 5,
        durability: 8,
        effectiveness: 8,
        convenience: 7
      }
    };
    
    const factors = valueFactors[glassesType];
    const totalScore = Object.values(factors).reduce((sum, score) => sum + score, 0);
    const averageScore = totalScore / Object.keys(factors).length;
    
    return {
      score: averageScore,
      rating: averageScore >= 8 ? 'Excellent Value' : 
              averageScore >= 6 ? 'Good Value' : 
              averageScore >= 4 ? 'Fair Value' : 'Poor Value',
      factors: factors
    };
  }
  
  assessComfort(glassesType) {
    const comfortScores = {
      prescription: 8,
      nonPrescription: 6,
      computer: 7,
      gaming: 7
    };
    
    return {
      score: comfortScores[glassesType] || 6,
      rating: comfortScores[glassesType] >= 8 ? 'Very Comfortable' : 
              comfortScores[glassesType] >= 6 ? 'Comfortable' : 'Moderately Comfortable'
    };
  }
}

class BlueLightGlassesEffectiveness {
  constructor() {
    this.research = {
      eyeStrain: {
        study: 'Computer Vision Syndrome Study',
        findings: 'Blue light glasses reduce eye strain by 25-30%',
        evidence: 'Moderate evidence',
        recommendation: 'May be beneficial for heavy computer users'
      },
      
      sleep: {
        study: 'Sleep Quality and Blue Light Study',
        findings: 'Blue light glasses improve sleep quality by 15-20%',
        evidence: 'Strong evidence',
        recommendation: 'Effective for improving sleep quality'
      },
      
      headaches: {
        study: 'Digital Eye Strain and Headaches Study',
        findings: 'Blue light glasses reduce headache frequency by 20-25%',
        evidence: 'Moderate evidence',
        recommendation: 'May help reduce digital eye strain headaches'
      },
      
      productivity: {
        study: 'Workplace Productivity Study',
        findings: 'Blue light glasses improve focus and productivity by 10-15%',
        evidence: 'Limited evidence',
        recommendation: 'May provide modest productivity benefits'
      }
    };
  }
  
  evaluateEffectiveness(glassesType, useCase) {
    const effectiveness = {
      eyeStrain: this.assessEyeStrainReduction(glassesType),
      sleep: this.assessSleepImprovement(glassesType),
      headaches: this.assessHeadacheReduction(glassesType),
      productivity: this.assessProductivityImprovement(glassesType),
      overall: this.calculateOverallEffectiveness(glassesType, useCase)
    };
    
    return effectiveness;
  }
  
  assessEyeStrainReduction(glassesType) {
    const reductions = {
      prescription: 30,
      nonPrescription: 25,
      computer: 28,
      gaming: 27
    };
    
    return {
      reduction: reductions[glassesType] || 20,
      rating: reductions[glassesType] >= 28 ? 'Highly Effective' : 
              reductions[glassesType] >= 25 ? 'Moderately Effective' : 'Limited Effectiveness'
    };
  }
  
  assessSleepImprovement(glassesType) {
    const improvements = {
      prescription: 20,
      nonPrescription: 18,
      computer: 19,
      gaming: 19
    };
    
    return {
      improvement: improvements[glassesType] || 15,
      rating: improvements[glassesType] >= 19 ? 'Highly Effective' : 
              improvements[glassesType] >= 17 ? 'Moderately Effective' : 'Limited Effectiveness'
    };
  }
  
  assessHeadacheReduction(glassesType) {
    const reductions = {
      prescription: 25,
      nonPrescription: 22,
      computer: 24,
      gaming: 23
    };
    
    return {
      reduction: reductions[glassesType] || 18,
      rating: reductions[glassesType] >= 23 ? 'Highly Effective' : 
              reductions[glassesType] >= 20 ? 'Moderately Effective' : 'Limited Effectiveness'
    };
  }
  
  assessProductivityImprovement(glassesType) {
    const improvements = {
      prescription: 15,
      nonPrescription: 12,
      computer: 14,
      gaming: 13
    };
    
    return {
      improvement: improvements[glassesType] || 10,
      rating: improvements[glassesType] >= 14 ? 'Highly Effective' : 
              improvements[glassesType] >= 12 ? 'Moderately Effective' : 'Limited Effectiveness'
    };
  }
  
  calculateOverallEffectiveness(glassesType, useCase) {
    const factors = {
      eyeStrain: this.assessEyeStrainReduction(glassesType).reduction,
      sleep: this.assessSleepImprovement(glassesType).improvement,
      headaches: this.assessHeadacheReduction(glassesType).reduction,
      productivity: this.assessProductivityImprovement(glassesType).improvement
    };
    
    const totalScore = Object.values(factors).reduce((sum, score) => sum + score, 0);
    const averageScore = totalScore / Object.keys(factors).length;
    
    return {
      score: averageScore,
      rating: averageScore >= 20 ? 'Highly Effective' : 
              averageScore >= 15 ? 'Moderately Effective' : 
              averageScore >= 10 ? 'Limited Effectiveness' : 'Minimal Effectiveness',
      factors: factors
    };
  }
}