Here is a detailed analysis of hamsters' visual range, synthesized from multiple research data:

I. Basic Visual Range
Effective Viewing Distance
Static Objects: Can only identify objects up to 0.3–0.5 meters away, similar to human vision with 2000–3000 degrees of myopia.
Moving Objects: Can sense the trajectory of moving targets beyond 0.5 meters, but details remain blurry.
Close-Range Vision
The optimal focusing distance is within 0.1 meters; imaging becomes rapidly blurry beyond this range.
II. Visual Field Characteristics
Breadth
Monocular vision spans 180 degrees, and the binocular overlap provides nearly 270-degree panoramic vision.
Blind Zone
A 30-degree area directly below is completely invisible, increasing the risk of falls from heights.
III. Environmental Adaptability
Light Influence
Vision is optimal in low-light environments (20–300 lux), while strong light (>800 lux) accelerates retinal damage.
In complete darkness, they rely on whiskers for navigation.
Color Vision Limitations
Can only perceive gray-blue tones, with extremely low recognition for red and yellow.
IV. Comparison with Other Senses
80% of spatial positioning relies on olfactory compensation, while vision only accounts for 20% of decision-making weight.
Hearing sensitivity is 3 times that of humans, offsetting visual limitations.
(Note: Visual differences between hamster breeds are minimal, but albino individuals are more sensitive to strong light.)