Method, device, and computer program product for determining a sensitivity of at least one eye of a test subject

A device for determining a sensitivity of at least one eye of a test subject comprising:

• a refraction unit configured to determine a subjective refraction result for the at least one eye of the test subject;
• a visual acuity determination unit configured to, while determining the subjective refraction result, determine a first visual acuity of the at least one eye for a first applied refraction and a second visual acuity of the at least one eye for a second applied refraction, wherein the second applied refraction is different from the first applied refraction;
• and
• a sensitivity ascertaining unit configured to ascertain the sensitivity of the at least one eye taking into account the first and second visual acuities at the first and second refractions.