The objective of this clinical trial is to evaluate the FIM optimal configuration and confirm the safety and performance/efficacy of the FIM when exposed to a larger and more varied population of users.

70 Eligible subjects will be enrolled to the study and examined with the FIM to determine the degree of pupil dilation/Contraction resistance.

The study will be conducted in two main stages: 1) pupil dilation measuring and 2) functional examination. The tests' sequence will be randomized, at least 30 minutes between each test.

Inclusion Criteria:

• Healthy and not diagnosed with any chronic disease that might influence the eye and pupilary muscle.
• Age 18-45 years old.
• Willing and able to sign the informed consent, after reading the study information form

Exclusion Criteria:

• Any known or diagnosed neurological disorders.
• A known medical history of ophthalmic surgery or any other disease that might influence the iris control muscle.
• Volunteers with a narrow or closed angle of the anterior chamber
• Presence of a corneal pathology which precludes measurement of the pupil dilatation
• Using of psychiatric medications
• Pregnancy
• Recent use (last 48hr) of pupil dilator eye drops.
• The volunteer is participating in other trials using drugs or devices
• Drug or alcohol abuse