The study is divided in two stages. The purpose of the first stage is to evaluate the percentage of subjects that can unpack the device, install it, learn the task and calibrate it according to their personal capabilities. The purpose of the second stage is to assess the ability of the subjects to perform reliable tests .

Stage I:

• Receive a packed HMP device.
• Unpack the device and install it, using a set-up guide
• Use an interactive tutorial to learn the task
• Calibrate the sensitivity of the test

This stage will be completed within 1 to 5 visits, depending on personal progress rate.

Subjects who have successfully completed stage I will be recruited to stage II.

Those subjects will:

• Perform 3 tests , each test in a different day

Inclusion Criteria:

• Age >50 years
• Familiar with computer usage
• Capable and willing to sign a consent form and participate in the study
• Ability to speak, read and understand instructions in English

Exclusion Criteria:

• Subject already participating in another study.

Subjects will be recruited in community centers and clinics and will include up to 25 people aged >50 years (Age-related Macular Degeneration age group). The group will be heterogeneous in terms of education, age, ethnic background, and gender. The subjects will be enrolled in one site in the USA In order to get 20 completed subjects, and based of assumption of 25% attrition- 25 subjects will be recruited to the study