[email protected] +44 20 8123 2220 (UK) +1 732 587 5005 (US) Contact Us | FAQ |
Advanced search

United States Slit Lamp Microscope Market Report 2017

October 2017 | 115 pages | ID: UEACD9A2386PEN
QYResearch

US$ 3,800.00

E-mail Delivery (PDF)

Download PDF Leaflet

Accepted cards
Wire Transfer
Checkout Later
Need Help? Ask a Question
In this report, the United States Slit Lamp Microscope market is valued at USD XX million in 2016 and is expected to reach USD XX million by the end of 2022, growing at a CAGR of XX% between 2016 and 2022.

Geographically, this report splits the United States market into seven regions:
  • The West
  • Southwest
  • The Middle Atlantic
  • New England
  • The South
  • The Midwest
  • with sales (volume), revenue (value), market share and growth rate of Slit Lamp Microscope in these regions, from 2012 to 2022 (forecast).
United States Slit Lamp Microscope market competition by top manufacturers/players, with Slit Lamp Microscope sales volume, price, revenue (Million USD) and market share for each manufacturer/player; the top players including
  • Haag-Streit
  • Topcon
  • Zeiss
  • Leica
  • Takagi Seiko
  • Reichert
  • Inami
  • Rexxam
  • HAI
  • Keeler
  • 66 Vision-Tech
  • Shanghai Bolan
  • MULE-TECH
  • Shanghai New Eyes
  • Suzhou KangJie'
  • Shanghai Supore
  • Shanghai Eder
  • Shanghai MediWorks
  • Chongqing Sunkingdom
  • Chongqing Kang Hua
  • Hangzhou Kingfish
  • A.R.C
On the basis of product, this report displays the production, revenue, price, market share and growth rate of each type, primarily split into
  • Handheld Slit Lamp Microscope
  • Benchtop Slit Lamp Microscope
On the basis on the end users/applications, this report focuses on the status and outlook for major applications/end users, sales volume, market share and growth rate of Slit Lamp Microscope for each application, including
  • Cornea Examination
  • Iris Examination
  • Crystalline Lens Examination
If you have any special requirements, please let us know and we will offer you the report as you want.
United States Slit Lamp Microscope Market Report 2017

1 SLIT LAMP MICROSCOPE OVERVIEW

1.1 Product Overview and Scope of Slit Lamp Microscope
1.2 Classification of Slit Lamp Microscope by Product Category
  1.2.1 United States Slit Lamp Microscope Market Size (Sales Volume) Comparison by Type (2012-2022)
  1.2.2 United States Slit Lamp Microscope Market Size (Sales Volume) Market Share by Type (Product Category) in 2016
  1.2.3 Handheld Slit Lamp Microscope
  1.2.4 Benchtop Slit Lamp Microscope
1.3 United States Slit Lamp Microscope Market by Application/End Users
  1.3.1 United States Slit Lamp Microscope Market Size (Consumption) and Market Share Comparison by Application (2012-2022)
  1.3.2 Cornea Examination
  1.3.3 Iris Examination
  1.3.4 Crystalline Lens Examination
1.4 United States Slit Lamp Microscope Market by Region
  1.4.1 United States Slit Lamp Microscope Market Size (Value) Comparison by Region (2012-2022)
  1.4.2 The West Slit Lamp Microscope Status and Prospect (2012-2022)
  1.4.3 Southwest Slit Lamp Microscope Status and Prospect (2012-2022)
  1.4.4 The Middle Atlantic Slit Lamp Microscope Status and Prospect (2012-2022)
  1.4.5 New England Slit Lamp Microscope Status and Prospect (2012-2022)
  1.4.6 The South Slit Lamp Microscope Status and Prospect (2012-2022)
  1.4.7 The Midwest Slit Lamp Microscope Status and Prospect (2012-2022)
1.5 United States Market Size (Value and Volume) of Slit Lamp Microscope (2012-2022)
  1.5.1 United States Slit Lamp Microscope Sales and Growth Rate (2012-2022)
  1.5.2 United States Slit Lamp Microscope Revenue and Growth Rate (2012-2022)

2 UNITED STATES SLIT LAMP MICROSCOPE MARKET COMPETITION BY PLAYERS/SUPPLIERS

2.1 United States Slit Lamp Microscope Sales and Market Share of Key Players/Suppliers (2012-2017)
2.2 United States Slit Lamp Microscope Revenue and Share by Players/Suppliers (2012-2017)
2.3 United States Slit Lamp Microscope Average Price by Players/Suppliers (2012-2017)
2.4 United States Slit Lamp Microscope Market Competitive Situation and Trends
  2.4.1 United States Slit Lamp Microscope Market Concentration Rate
  2.4.2 United States Slit Lamp Microscope Market Share of Top 3 and Top 5 Players/Suppliers
  2.4.3 Mergers & Acquisitions, Expansion in United States Market
2.5 United States Players/Suppliers Slit Lamp Microscope Manufacturing Base Distribution, Sales Area, Product Type

3 UNITED STATES SLIT LAMP MICROSCOPE SALES (VOLUME) AND REVENUE (VALUE) BY REGION (2012-2017)

3.1 United States Slit Lamp Microscope Sales and Market Share by Region (2012-2017)
3.2 United States Slit Lamp Microscope Revenue and Market Share by Region (2012-2017)
3.3 United States Slit Lamp Microscope Price by Region (2012-2017)

4 UNITED STATES SLIT LAMP MICROSCOPE SALES (VOLUME) AND REVENUE (VALUE) BY TYPE (PRODUCT CATEGORY) (2012-2017)

4.1 United States Slit Lamp Microscope Sales and Market Share by Type (Product Category) (2012-2017)
4.2 United States Slit Lamp Microscope Revenue and Market Share by Type (2012-2017)
4.3 United States Slit Lamp Microscope Price by Type (2012-2017)
4.4 United States Slit Lamp Microscope Sales Growth Rate by Type (2012-2017)

5 UNITED STATES SLIT LAMP MICROSCOPE SALES (VOLUME) BY APPLICATION (2012-2017)

5.1 United States Slit Lamp Microscope Sales and Market Share by Application (2012-2017)
5.2 United States Slit Lamp Microscope Sales Growth Rate by Application (2012-2017)
5.3 Market Drivers and Opportunities

6 UNITED STATES SLIT LAMP MICROSCOPE PLAYERS/SUPPLIERS PROFILES AND SALES DATA

6.1 Haag-Streit
  6.1.1 Company Basic Information, Manufacturing Base and Competitors
  6.1.2 Slit Lamp Microscope Product Category, Application and Specification
    6.1.2.1 Product A
    6.1.2.2 Product B
  6.1.3 Haag-Streit Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.1.4 Main Business/Business Overview
6.2 Topcon
  6.2.2 Slit Lamp Microscope Product Category, Application and Specification
    6.2.2.1 Product A
    6.2.2.2 Product B
  6.2.3 Topcon Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.2.4 Main Business/Business Overview
6.3 Zeiss
  6.3.2 Slit Lamp Microscope Product Category, Application and Specification
    6.3.2.1 Product A
    6.3.2.2 Product B
  6.3.3 Zeiss Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.3.4 Main Business/Business Overview
6.4 Leica
  6.4.2 Slit Lamp Microscope Product Category, Application and Specification
    6.4.2.1 Product A
    6.4.2.2 Product B
  6.4.3 Leica Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.4.4 Main Business/Business Overview
6.5 Takagi Seiko
  6.5.2 Slit Lamp Microscope Product Category, Application and Specification
    6.5.2.1 Product A
    6.5.2.2 Product B
  6.5.3 Takagi Seiko Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.5.4 Main Business/Business Overview
6.6 Reichert
  6.6.2 Slit Lamp Microscope Product Category, Application and Specification
    6.6.2.1 Product A
    6.6.2.2 Product B
  6.6.3 Reichert Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.6.4 Main Business/Business Overview
6.7 Inami
  6.7.2 Slit Lamp Microscope Product Category, Application and Specification
    6.7.2.1 Product A
    6.7.2.2 Product B
  6.7.3 Inami Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.7.4 Main Business/Business Overview
6.8 Rexxam
  6.8.2 Slit Lamp Microscope Product Category, Application and Specification
    6.8.2.1 Product A
    6.8.2.2 Product B
  6.8.3 Rexxam Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.8.4 Main Business/Business Overview
6.9 HAI
  6.9.2 Slit Lamp Microscope Product Category, Application and Specification
    6.9.2.1 Product A
    6.9.2.2 Product B
  6.9.3 HAI Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.9.4 Main Business/Business Overview
6.10 Keeler
  6.10.2 Slit Lamp Microscope Product Category, Application and Specification
    6.10.2.1 Product A
    6.10.2.2 Product B
  6.10.3 Keeler Slit Lamp Microscope Sales, Revenue, Price and Gross Margin (2012-2017)
  6.10.4 Main Business/Business Overview
6.11 66 Vision-Tech
6.12 Shanghai Bolan
6.13 MULE-TECH
6.14 Shanghai New Eyes
6.15 Suzhou KangJie?
6.16 Shanghai Supore
6.17 Shanghai Eder
6.18 Shanghai MediWorks
6.19 Chongqing Sunkingdom
6.20 Chongqing Kang Hua
6.21 Hangzhou Kingfish
6.22 A.R.C

7 SLIT LAMP MICROSCOPE MANUFACTURING COST ANALYSIS

7.1 Slit Lamp Microscope Key Raw Materials Analysis
  7.1.1 Key Raw Materials
  7.1.2 Price Trend of Key Raw Materials
  7.1.3 Key Suppliers of Raw Materials
  7.1.4 Market Concentration Rate of Raw Materials
7.2 Proportion of Manufacturing Cost Structure
  7.2.1 Raw Materials
  7.2.2 Labor Cost
  7.2.3 Manufacturing Expenses
7.3 Manufacturing Process Analysis of Slit Lamp Microscope

8 INDUSTRIAL CHAIN, SOURCING STRATEGY AND DOWNSTREAM BUYERS

8.1 Slit Lamp Microscope Industrial Chain Analysis
8.2 Upstream Raw Materials Sourcing
8.3 Raw Materials Sources of Slit Lamp Microscope Major Manufacturers in 2016
8.4 Downstream Buyers

9 MARKETING STRATEGY ANALYSIS, DISTRIBUTORS/TRADERS

9.1 Marketing Channel
  9.1.1 Direct Marketing
  9.1.2 Indirect Marketing
  9.1.3 Marketing Channel Development Trend
9.2 Market Positioning
  9.2.1 Pricing Strategy
  9.2.2 Brand Strategy
  9.2.3 Target Client
9.3 Distributors/Traders List

10 MARKET EFFECT FACTORS ANALYSIS

10.1 Technology Progress/Risk
  10.1.1 Substitutes Threat
  10.1.2 Technology Progress in Related Industry
10.2 Consumer Needs/Customer Preference Change
10.3 Economic/Political Environmental Change

11 UNITED STATES SLIT LAMP MICROSCOPE MARKET SIZE (VALUE AND VOLUME) FORECAST (2017-2022)

11.1 United States Slit Lamp Microscope Sales Volume, Revenue Forecast (2017-2022)
11.2 United States Slit Lamp Microscope Sales Volume Forecast by Type (2017-2022)
11.3 United States Slit Lamp Microscope Sales Volume Forecast by Application (2017-2022)
11.4 United States Slit Lamp Microscope Sales Volume Forecast by Region (2017-2022)

12 RESEARCH FINDINGS AND CONCLUSION

13 APPENDIX

13.1 Methodology/Research Approach
  13.1.1 Research Programs/Design
  13.1.2 Market Size Estimation
  13.1.3 Market Breakdown and Data Triangulation
13.2 Data Source
  13.2.1 Secondary Sources
  13.2.2 Primary Sources
13.3 Disclaimer


The report requires updating with new data and is sent in 2-3 business days after order is placed.


LIST OF TABLES AND FIGURES

Figure Product Picture of Slit Lamp Microscope
Figure United States Slit Lamp Microscope Market Size (K Units) by Type (2012-2022)
Figure United States Slit Lamp Microscope Sales Volume Market Share by Type (Product Category) in 2016
Figure Handheld Slit Lamp Microscope Product Picture
Figure Benchtop Slit Lamp Microscope Product Picture
Figure United States Slit Lamp Microscope Market Size (K Units) by Application (2012-2022)
Figure United States Sales Market Share of Slit Lamp Microscope by Application in 2016
Figure Cornea Examination Examples
Table Key Downstream Customer in Cornea Examination
Figure Iris Examination Examples
Table Key Downstream Customer in Iris Examination
Figure Crystalline Lens Examination Examples
Table Key Downstream Customer in Crystalline Lens Examination
Figure United States Slit Lamp Microscope Market Size (Million USD) by Region (2012-2022)
Figure The West Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure Southwest Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure The Middle Atlantic Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure New England Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure The South of US Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure The Midwest Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure United States Slit Lamp Microscope Sales (K Units) and Growth Rate (2012-2022)
Figure United States Slit Lamp Microscope Revenue (Million USD) and Growth Rate (2012-2022)
Figure United States Slit Lamp Microscope Market Major Players Product Sales Volume (K Units) (2012-2017)
Table United States Slit Lamp Microscope Sales (K Units) of Key Players/Suppliers (2012-2017)
Table United States Slit Lamp Microscope Sales Share by Players/Suppliers (2012-2017)
Figure 2016 United States Slit Lamp Microscope Sales Share by Players/Suppliers
Figure 2017 United States Slit Lamp Microscope Sales Share by Players/Suppliers
Figure United States Slit Lamp Microscope Market Major Players Product Revenue (Million USD) (2012-2017)
Table United States Slit Lamp Microscope Revenue (Million USD) by Players/Suppliers (2012-2017)
Table United States Slit Lamp Microscope Revenue Share by Players/Suppliers (2012-2017)
Figure 2016 United States Slit Lamp Microscope Revenue Share by Players/Suppliers
Figure 2017 United States Slit Lamp Microscope Revenue Share by Players/Suppliers
Table United States Market Slit Lamp Microscope Average Price (USD/Unit) of Key Players/Suppliers (2012-2017)
Figure United States Market Slit Lamp Microscope Average Price (USD/Unit) of Key Players/Suppliers in 2016
Figure United States Slit Lamp Microscope Market Share of Top 3 Players/Suppliers
Figure United States Slit Lamp Microscope Market Share of Top 5 Players/Suppliers
Table United States Players/Suppliers Slit Lamp Microscope Manufacturing Base Distribution and Sales Area
Table United States Players/Suppliers Slit Lamp Microscope Product Category
Table United States Slit Lamp Microscope Sales (K Units) by Region (2012-2017)
Table United States Slit Lamp Microscope Sales Share by Region (2012-2017)
Figure United States Slit Lamp Microscope Sales Share by Region (2012-2017)
Figure United States Slit Lamp Microscope Sales Market Share by Region in 2016
Table United States Slit Lamp Microscope Revenue (Million USD) and Market Share by Region (2012-2017)
Table United States Slit Lamp Microscope Revenue Share by Region (2012-2017)
Figure United States Slit Lamp Microscope Revenue Market Share by Region (2012-2017)
Figure United States Slit Lamp Microscope Revenue Market Share by Region in 2016
Table United States Slit Lamp Microscope Price (USD/Unit) by Region (2012-2017)
Table United States Slit Lamp Microscope Sales (K Units) by Type (2012-2017)
Table United States Slit Lamp Microscope Sales Share by Type (2012-2017)
Figure United States Slit Lamp Microscope Sales Share by Type (2012-2017)
Figure United States Slit Lamp Microscope Sales Market Share by Type in 2016
Table United States Slit Lamp Microscope Revenue (Million USD) and Market Share by Type (2012-2017)
Table United States Slit Lamp Microscope Revenue Share by Type (2012-2017)
Figure Revenue Market Share of Slit Lamp Microscope by Type (2012-2017)
Figure Revenue Market Share of Slit Lamp Microscope by Type in 2016
Table United States Slit Lamp Microscope Price (USD/Unit) by Types (2012-2017)
Figure United States Slit Lamp Microscope Sales Growth Rate by Type (2012-2017)
Table United States Slit Lamp Microscope Sales (K Units) by Application (2012-2017)
Table United States Slit Lamp Microscope Sales Market Share by Application (2012-2017)
Figure United States Slit Lamp Microscope Sales Market Share by Application (2012-2017)
Figure United States Slit Lamp Microscope Sales Market Share by Application in 2016
Table United States Slit Lamp Microscope Sales Growth Rate by Application (2012-2017)
Figure United States Slit Lamp Microscope Sales Growth Rate by Application (2012-2017)
Table Haag-Streit Basic Information List
Table Haag-Streit Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Haag-Streit Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Haag-Streit Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Haag-Streit Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Topcon Basic Information List
Table Topcon Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Topcon Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Topcon Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Topcon Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Zeiss Basic Information List
Table Zeiss Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Zeiss Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Zeiss Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Zeiss Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Leica Basic Information List
Table Leica Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Leica Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Leica Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Leica Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Takagi Seiko Basic Information List
Table Takagi Seiko Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Takagi Seiko Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Takagi Seiko Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Takagi Seiko Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Reichert Basic Information List
Table Reichert Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Reichert Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Reichert Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Reichert Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Inami Basic Information List
Table Inami Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Inami Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Inami Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Inami Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Rexxam Basic Information List
Table Rexxam Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Rexxam Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Rexxam Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Rexxam Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table HAI Basic Information List
Table HAI Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure HAI Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure HAI Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure HAI Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table Keeler Basic Information List
Table Keeler Slit Lamp Microscope Sales (K Units), Revenue (Million USD), Price (USD/Unit) and Gross Margin (2012-2017)
Figure Keeler Slit Lamp Microscope Sales Growth Rate (2012-2017)
Figure Keeler Slit Lamp Microscope Sales Market Share in United States (2012-2017)
Figure Keeler Slit Lamp Microscope Revenue Market Share in United States (2012-2017)
Table 66 Vision-Tech Basic Information List
Table Shanghai Bolan Basic Information List
Table MULE-TECH Basic Information List
Table Shanghai New Eyes Basic Information List
Table Suzhou KangJie? Basic Information List
Table Shanghai Supore Basic Information List
Table Shanghai Eder Basic Information List
Table Shanghai MediWorks Basic Information List
Table Chongqing Sunkingdom Basic Information List
Table Chongqing Kang Hua Basic Information List
Table Hangzhou Kingfish Basic Information List
Table A.R.C Basic Information List
Table Production Base and Market Concentration Rate of Raw Material
Figure Price Trend of Key Raw Materials
Table Key Suppliers of Raw Materials
Figure Manufacturing Cost Structure of Slit Lamp Microscope
Figure Manufacturing Process Analysis of Slit Lamp Microscope
Figure Slit Lamp Microscope Industrial Chain Analysis
Table Raw Materials Sources of Slit Lamp Microscope Major Players/Suppliers in 2016
Table Major Buyers of Slit Lamp Microscope
Table Distributors/Traders List
Figure United States Slit Lamp Microscope Sales Volume (K Units) and Growth Rate Forecast (2017-2022)
Figure United States Slit Lamp Microscope Revenue (Million USD) and Growth Rate Forecast (2017-2022)
Figure United States Slit Lamp Microscope Price (USD/Unit) Trend Forecast (2017-2022)
Table United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Type (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Type (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Type in 2022
Table United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Application (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Application (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Application in 2022
Table United States Slit Lamp Microscope Sales Volume (K Units) Forecast by Region (2017-2022)
Table United States Slit Lamp Microscope Sales Volume Share Forecast by Region (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume Share Forecast by Region (2017-2022)
Figure United States Slit Lamp Microscope Sales Volume Share Forecast by Region in 2022
Table Research Programs/Design for This Report
Figure Bottom-up and Top-down Approaches for This Report
Figure Data Triangulation
Table Key Data Information from Secondary Sources
Table Key Data Information from Primary Sources

More Publications

Need Help?

Ask a Question

Market Reports

All Categories