---
kind: "section"
citation: "10 C.F.R. § 35.491"
title: "10"
number: "35.491"
heading: "Training for ophthalmic use of strontium-90."
url: "https://uscodex.org/cfr/10/35.491"
---

# §35.491. Training for ophthalmic use of strontium-90.


Except as provided in [§ 35.57](/cfr/10/35.57.md), the licensee shall require the authorized user of strontium-90 for ophthalmic radiotherapy to be a physician who—

- (a) Is an authorized user under [§ 35.490](/cfr/10/35.490.md) or equivalent Agreement State requirements; or
- (b)
  - (1) Has completed 24 hours of classroom and laboratory training applicable to the medical use of strontium-90 for ophthalmic radiotherapy. The training must include—
    - (i) Radiation physics and instrumentation;
    - (ii) Radiation protection;
    - (iii) Mathematics pertaining to the use and measurement of radioactivity; and
    - (iv) Radiation biology; and
  - (2) Supervised clinical training in ophthalmic radiotherapy under the supervision of an authorized user at a medical institution, clinic, or private practice that includes the use of strontium-90 for the ophthalmic treatment of five individuals. This supervised clinical training must involve—
    - (i) Examination of each individual to be treated;
    - (ii) Calculation of the dose to be administered;
    - (iii) Administration of the dose; and
    - (iv) Follow up and review of each individual's case history; and
  - (3) Has obtained written attestation, signed by a preceptor authorized user who meets the requirements in [§ 35.57](/cfr/10/35.57.md), [§ 35.490](/cfr/10/35.490.md), § 35.491, or equivalent Agreement State requirements, that the individual has satisfactorily completed the requirements in paragraphs [(b)(1)](#b-1) and [(2)](#b-2) of this section and is able to independently fulfill the radiation safety-related duties as an authorized user of strontium-90 for ophthalmic use.

## Notes

### Amendments

[67 FR 20370, Apr. 24, 2002, as amended at 68 FR 19326, Apr. 21, 2003; 71 FR 15011, Mar. 27, 2006; 74 FR 33906, July 14, 2009; 83 FR 33109, July 16, 2018]

### Authority

Authority: Atomic Energy Act of 1954, secs. 81, 161, 181, 182, 183, 223, 234, 274 (42 U.S.C. 2111, 2201, 2231, 2232, 2233, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 206 (42 U.S.C. 5841, 5846); 44 U.S.C. 3504 note.

### Source

Source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.

### Amendments

[67 FR 20370, Apr. 24, 2002, as amended at 68 FR 19326, Apr. 21, 2003; 71 FR 15011, Mar. 27, 2006; 74 FR 33906, July 14, 2009; 83 FR 33109, July 16, 2018]