VISION DRUM

An eye testing or visual acuity drum is a medical device used by eye care professionals to assess a patient's vision and eye movement. It generall...

Operation Modes	Available in manual, motorized, or remote-controlled electric versions.
Power Supply	Typically requires a standard A/C 220-240V, 50Hz electrical supply.
Test Charts (Optotypes)	Includes various charts like:
Tumbling "E" or Landolt "C" for non	readers/children
Specialized tests	Duochrome, Worths Four Dots, and color vision tests.
Construction	Generally made from durable metal or fiber body with plastic brackets.
Dimensions & Weight	Compact and lightweight design, often portable for use in various clinical or field settings.
Illumination	Many models are internally illuminated with a tube light or LED strip for clear visibility.
Mounting	Designed for wall mounting or attachment to an ophthalmic chair unit.
Language Support	Charts often come in multiple languages to suit diverse patient populations.

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