← Product Code [HOR](/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HOR) · K873915

# JACKSON CROSS CYLINDER TEST (K873915)

_Richmond Products, Inc. · HOR · Oct 28, 1987 · Ophthalmic · SESE_

**Canonical URL:** https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HOR/K873915

## Device Facts

- **Applicant:** Richmond Products, Inc.
- **Product Code:** [HOR](/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HOR.md)
- **Decision Date:** Oct 28, 1987
- **Decision:** SESE
- **Submission Type:** Traditional
- **Regulation:** 21 CFR 886.1840
- **Device Class:** Class 1
- **Review Panel:** Ophthalmic

## Regulatory Identification

A simulatan (including crossed cylinder) is a device that is a set of pairs of cylinder lenses that provides various equal plus and minus refractive strengths. The lenses are arranged so that the user can exchange the positions of plus and minus cylinder lenses of equal strengths. The device is intended for subjective refraction (refraction in which the patient judges whether a given object is clearly in focus, as the examiner uses different lenses).

---

**Source:** [https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HOR/K873915](https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HOR/K873915)

**Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. If you're preparing [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/), [get in touch](https://innolitics.com/contact).

**Cite:** Innolitics at https://innolitics.com