# NAICS 621320: Offices of Optometrists

The SBA size standard for NAICS 621320 is $9,000,000 in average annual receipts (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 621320 |
| Title | Offices of Optometrists |
| Level | 6 |
| Parent | 62132 |
| Size standard | $9,000,000 in average annual receipts |
| Footnote | - |

## Description

This industry comprises establishments of health practitioners having the degree of O.D. (Doctor of Optometry) primarily engaged in the independent practice of optometry. These practitioners examine, diagnose, treat, and manage diseases and disorders of the visual system, the eye, and associated structures as well as diagnose related systemic conditions. Offices of optometrists prescribe and/or provide eyeglasses, contact lenses, low vision aids, and vision therapy. They operate private or group practices in their own offices (e.g., centers, clinics) or in the facilities of others, such as hos

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/621320/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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