(111 days)
The Keeler CryoMaster & Probes are for use in ophthalmic surgery in cryopexy for retinal detachment, cyclo destructive procedures in refractory glaucoma, extraction of fragments within the vitreous cavity, cataract extraction, cryo destruction of lash follicles for trichiasis, and treatment of retinopathy of prematurity (ROP).
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The provided text is a 510(k) clearance letter from the FDA for a medical device called "Keeler CryoMaster & Probes." This document is a regulatory approval, not a scientific study report. Therefore, it does not contain the detailed information requested regarding acceptance criteria and performance studies.
Specifically, the document does not include:
- A table of acceptance criteria and reported device performance.
- Sample sizes for test sets or their data provenance.
- Information on the number or qualifications of experts used to establish ground truth.
- Adjudication methods.
- Results of any Multi-Reader Multi-Case (MRMC) comparative effectiveness studies.
- Results of any standalone algorithm performance studies.
- The type of ground truth used (e.g., pathology, outcomes data).
- Sample size for training sets.
- How ground truth for training sets was established.
This document merely states that the FDA has reviewed the 510(k) notification and determined that the device is "substantially equivalent" to legally marketed predicate devices for the stated indications for use. Substantial equivalence is a regulatory standard, not a performance metric defined by a specific study with acceptance criteria.
§ 886.4170 Cryophthalmic unit.
(a)
Identification. A cryophthalmic unit is a device that is a probe with a small tip that becomes extremely cold through the controlled use of a refrigerant or gas. The device may be AC-powered. The device is intended to remove cataracts by the formation of an adherent ice ball in the lens, to freeze the eye and adjunct parts for surgical removal of scars, and to freeze tumors.(b)
Classification. Class II.