We will open our clinic all days through Bon Holidays.
Doctor’s schedule
Pediatric Ophthalmologist

Amblyopia (Lazy eye)


A lazy eye, also called amblyopia, is that the vision of one of your eyes does not develop the way it should. It starts in childhood, and the best chance of correcting the condition is the identification and treatment before age7. As the symptoms of amblyopia, head tilting, squinting/shutting one eye and depth perception tend to appear.

What causes it?

There are several causes of amblyopia such as refractive errors, strabismus, and cataract and so on. Doctors do not always know what behinds it, however, all children should have visual acuity test before the school-age to find the symptoms. If there is any problem, the doctor may recommend children to see a pediatric eye doctor.

How is it treated?

The treatment strategy may differ depends on the cause, but we would show some examples below.

・Glasses to correct children’s vision problems. Kids with amblyopia mostly need glasses to help their eyes focus.
・Wearing a patch over one eye (strong eye) to make children’s brain to use the weaker eye.
・Eye drops which makes the strong eye’s vision blurry and make the weaker eye to use.

Some teenagers and adults have successful treatment; however, it may not work well as well after children’s vision have fully developed (around age 7 to 9). That is why it is important to start treatment as soon as you can.

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

(Registered Recipient of a Diploma of Ophthalmology)


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

(Registered Recipient of a Diploma of Ophthalmology)


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

Main Thesis

Sequelae of ocular trauma in schools.(Japanese)
A case of periodic upper and lower strabismus with loss of periodicity after cataract surgery(Japanese)
Quantitative analysis of eye movement during a cover test for patients with intermittent exotropia(Japanese)

We have 7 full-time service orthoptist, 2 part-time orthoptists, 1 full-time nurse and 4 part-time nurses in our clinic.
Another several ophthalmologists are working here.