Table 1.
Exclusion criteria for the study.
| (1) | Subjects who had amblyopia or strabismus |
| (2) | Subjects who were diagnosed as presbyopia [the control width was less than 2.5 diopters (D) for the dominant eye] |
| (3) | Subjects who had an uncorrected serious refractive error for the dominant eye |
| (4) | Subjects who had undergone ophthalmic surgery for the dominant eye |
| (5) | Subjects who had best-corrected visual acuity <1.0 for the dominant eye |
| (6) | Subjects who had a serious eye disease |
| (7) | Subjects who were under treatment for any chronic disease and/or used medicines continuously or medical supplies that were being commonly used |
| (8) | Subjects who had the experience of a serious disease (e.g., diabetes, liver disease, kidney disease, and/or heart disease, thyroid gland disease, adrenal gland disease, digestive system disease, and/or metabolic disorder) |
| (9) | Subjects who could not stop eating foods similar to the test foods and/or were taking drugs or health foods including lactic acid bacteria or Bifidobacterium |
| (10) | Subjects with excessive alcohol-drinking behavior |
| (11) | Subjects who regularly took drugs or health foods, which might have had effects on the eyes or were expected to be used during the study |
| (12) | Subjects who could not stop taking drugs or health foods, which might have effects on immune functions |
| (13) | Subjects with the possibility of drug and/or food allergy |
| (14) | Subjects who could not stop drinking alcoholic beverages for 2 days until the pre-check day and check days |
| (15) | Subjects who had a history of pollinosis |
| (16) | Subjects who have a tendency to get diarrhea by eating dairy products |
| (17) | Subjects diagnosed with drug or alcohol dependence |
| (18) | Subjects who and/or whose family worked in a company selling or manufacturing health foods or foods with functional claims |
| (19) | Subjects who could not execute a display work load test |
| (20) | Subjects who were participating in other clinical studies or revoked an agreement acquisition day and/or participated in other clinical studies within 3 months or who were planning to participate in other clinical studies during this study |
| (21) | Subjects who were pregnant, breastfeeding, planning to get pregnant, or breastfeeding during the study |
| (22) | Subjects who were judged as unsuitable by the physician for laboratory data, anthropometric measurements, or physical examination values |
| (23) | Subjects who were judged as unsuitable for the study as assessed by the background questionnaire |
| (24) | Subjects who were judged as unsuitable by the supervising physician for other reasons |