The ESV3000™ ETDRS Clinical Trial Standardized Viewer provides controlled, repeatable illumination for standardized ETDRS/LogMAR visual acuity testing, including Best Corrected Visual Acuity (BCVA) assessment in clinical trials and vision research. Patented internal calibration technology automatically controls LED output to help maintain consistent chart luminance for repeatable visual acuity measurements.

With the push of a button, the ESV3000™ automatically calibrates to photopic 85 cd/m² or mesopic 3 cd/m² illumination, with an additional 160 cd/m² preset available for standardized ETDRS testing. LED illumination eliminates warm-up time and routine bulb replacement, while the universal power supply supports use from 100V to 240V.

Key Features

• Standardized ETDRS/BCVA Testing: Controlled luminance supports repeatable ETDRS/LogMAR visual acuity assessment, including BCVA testing.
• Preset luminance levels of 3, 85, and 160 cd/m².
• Self-calibrating LED technology.
• Universal power supply.*
• Infrared wireless remote control.
• Compatible with high-contrast ETDRS charts.
• Integrated chart storage.
• Optional adjustable glare lights available.

This kit includes

• ESV3000™ ETDRS Viewer 3
• Original Series Charts R, 1, and 2 for 10 ft/3 m testing distance
• Floor stand with casters

*Power plug adaptor may be needed for outlets outside the United States.