We will open our clinic all days through Golden week.

Binocular vision simplified tester (WOC)


This is a guide of WOC(D-5000). Please consult us if you are suffering from eye strain or school myopia.
Medical device approval number: 08B0573

What is WOC?

By looking at a beautiful landscape in the examiner for about 5 minutes, release the eye strain (fogging method). It is effective in reducing eye strain, preventing the progression of myopia in children, and maintaining a parallel gaze that has turned inward. WOC combines the lens exercise method and flashing pupil exercise to relieve tension in the eyes in a short period of time.

The optotype moves back and forth between +3.00D (fogging) and ±0.00D to -1.00D (adjustment resting position). This effect relieves tension in the ciliary body, which has become stiff due to constant tension caused by prolonged computer work, etc.

The light blinks according to the period of mydriasis and miosis of the pupil and can stimulate the ciliary body as well as the movement of the pupil. This stimulus enhances the fogging effect.

When looking at objects up close, the eye uses the ciliary body to expand the lens in the eye to bring them into focus, and this function is called adjustment. WOC relaxes the ciliary body, which has been strained by prolonged computer work, etc., and restores the focus that has shifted to the near side. The effects are immediately visible in the visual acuity, so we check the visual acuity before and after the treatment to confirm the effects. We have patients with pseudomyopia and eyestrain caused by prolonged computer work, as well as children who come to our clinic to prevent the progression of myopia. In addition, depending on the symptoms, eyes that have been tilted inward may be improved to a parallel position. If you are concerned about your symptoms or wish to have treatment with WOC, please consult our staff or doctor.

Office hours






(no lunchtime.)


Our clinic is closed on 12/31, 1/1, 1/2, 1/3.


9th floor of Hulic Shinjuku Building,3-25-1, Shinjuku, Shinjuku-ku, Tokyo, 160-0022






Online appointment


Doctor career

Director:Yasuhiro Shinkawa

(A board-certified ophthalmologist)


Japan Ophthalmological Society
Japanese Retina and Vitreous Society
Japanese Society of Ophthalmic Surgeons

Certification of Completion

Course of Ophthalmic PDT Study Group
Number of cataract surgery up to the present:About 4000


2001 Graduate-Medical Department of Kumamoto University
2002 Department of Ophthalmology Kyoto University School of medicine
2002 Shimada Municipal Hospital
2008 Japanese Red Cross Society
2010 Kitano Hospital The Tazuke Kofukai Medical Research Institute
2014 Shinjuku-Higashiguchi Eye Clinic


Doctor:Fumiyo Hasegawa

(A board-certified ophthalmologist)


Japan Ophthalmological Society
Japan Ophthalmologists Associasion
Japanese Association for Strabismus and Amblyopia(JASA)


1992 Graduate- Medical Department of Teikyo Univercity
2002 The head ophthalmologist at International Catholic Hospital
2020 Shinjuku-Higashiguchi Eye Clinic

We have 5 full-time service orthoptist, 3 part-time orthoptists, 1 full-time nurse and 3 part-time nurses in our clinic.
Another several ophthalmologists are working here.