ISO 15752:2010

Overview

ISO 15752:2010 - "Ophthalmic instruments - Endoilluminators - Fundamental requirements and test methods for optical radiation safety" specifies optical radiation safety requirements and test methods for endoilluminator light sources and fibre‑optic endoilluminator light guides used to illuminate the interior of the eye during ocular surgery. This second edition (2010) defines classification, measurement procedures, manufacturer information and marking needed to manage retinal light‑hazard risks for endoilluminators.

Key topics and technical requirements

• Scope and classification
  • Applies to endoilluminator light sources and light guides; instruments are classified as Group 1 (no potential light hazard) or Group 2 (potential light hazard) following ISO 15004-2:2007 definitions.
• Retinal protection
  • If the aphakic‑weighted retinal exposure guideline is reached in under 30 minutes at maximum output, an integral retinal protection means is required, with its enabled/disabled status clearly evident to the user.
• Stability
  • Devices must be designed so ageing, maintenance or correct component replacement do not reduce safe exposure times below rated levels during the product lifetime.
• Measurement and test methods
  • Determination of irradiance, spectral irradiance and spectrally weighted irradiance for different light‑guide types (standard/collimated, wide‑angle/diffusing, chandelier, pic/forceps).
  • Typical measurement distances: 15 mm for standard/collimated; 18 mm for wide‑angle/chandelier; 1 mm for pic/forceps (or manufacturer‑specified distances).
  • Measurements are made in water or saline; apertures and averaging areas (e.g., 1 mm diameter or 0.03 mm for non‑uniform beams) are specified.
  • Half‑angle (output divergence) measurement defined as the angle where irradiance equals half the maximum, with uncertainty < 1°.
  • Annex B describes a water‑bath spectroradiometric method (spectroradiometer and 1 mm aperture) for maximum spectral irradiance measurement.
• Information and marking
  • For Group 2, manufacturers must supply exposure times to reach aphakic weighted safety guidelines at maximum and 50% intensity (with/without retinal protection) for each intended light‑guide combination, plus spectral output (320–1 100 nm) on request.
  • Permanent marking and packaging information requirements are specified (manufacturer ID, model/serial, warnings, spectral/risks info).

Applications and users

• Medical device manufacturers and designers of ophthalmic endoilluminators and light guides (product safety, design validation, risk management)
• Test laboratories and certification bodies performing optical radiation safety testing and regulatory compliance
• Hospital procurement, clinical engineering and ophthalmic surgeons assessing device safety and labeling
• Regulatory authorities referencing standards for device approvals and labeling

Related standards

• ISO 15004-2:2007 - Ophthalmic instruments - Light hazard protection (normative reference)
• IEC 60601-1 - Medical electrical equipment - General safety and performance requirements

Keywords: ISO 15752, endoilluminator, ophthalmic instruments, optical radiation safety, light guides, retinal protection, test methods, spectroradiometer.