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

What is Cataract?

Cataract is...

A cataract is a clouding of the clear lens of your eye because of degeneration of protein inside. The cloudiness leads to low visual acuity and be unable to focus into images on retina clearly. Most cataracts develop slowly and don't disturb your eyesight so soon. However with time, cataracts will eventually interfere with your vision.

Types of cataracts

  • Congenital cataract
    Lenses in your eyes are naturally cloudy.
  • Age-related cataract
    One of the types of cataract develops by aging.
  • Diabetic cataract
    Diabetic cataract is related to high blood sugar, a material called sorbitol accumulates in your lens and it makes your vision cloudy.
  • Skin disease cataract
    As complication of atopic dermatitis, lenses become cloudy.
  • Corticosteroid cataract
    Caused by long-time use of steroid medication.
  • Traumatic cataract
    Caused by external eye wound.
  • Secondary cataract
    After surgery of cataract, the cloudiness develops at posterior capsule of the lens.

Cataract symptoms

Clouding of the clear lens of your eye, you will recognize following symptoms;

  • Clouded, blurred or dim vision
  • Sensitivity to light and glare
  • Frequent changes in eyeglass or contact lens prescription
  • Fading or yellowing of colors
  • Double vision in a single eye

Cataract itself doesn’t cause pains, foreign object sensation or inflammations.

The causes of cataract

Most cataracts develop by aging. Also, ultraviolet rays contribute to the development of cataract in daily life.
Some are related to injury, atopic dermatitis, diabetes and malnutrition, which can cause cataract to develop to younger generation. If you have experiences of eye surgery, it can increase your risk of this disease.

Office hours




11:30-18:30(no lunchtime.)


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


Higashiikebukuro, Toshima-ku, Tokyo, 170-0013

TEL: +81-3-3981-6363

・1-minute walk from Ikebukuro station east exit.

・Our clinic is on the right side of "LABI (Yamada Denki)".
The clinic is on the fifth floor of the building which "Bank of Mitsubishi UFJ" is on the first floor.



Please print and fill out this questionnaire for consultation in advance.



Online appointment


Doctor career

Director:Yoshiko Hori

(Registered Recipient of a Diploma of Ophthalmology Ph.D)
English fluent


Japanese Ophthalmological Society
Japan Ophtalmologists Association
Japan Cornea Society
Japanese Society of Ophthalmic Surgeons
Japanese Society of Cataract and Refractive Surgery


1986: Graduate-School of Medicine of Iwate Medical University
1990: Post Graduate school of Iwate MedicalUniversity
1991: Iwate prefectural Ofunato hospital
1993: Department of Ophthalmology Iwate Medical University Instructor
1993: Schepens Eye Research Institute of Harvard University
1997: Department of Ophthalmology Tokyo Dental College
1997: Minami-Aoyama Eye Clinic
2008: Ichikawa general hospital Department of Ophthalmology Tokyo Dental College
2010: IkebukuroSunshineStreetEyeClinic(Director since 2010)

Main Thesis

The three-dimensional organization of collagen fibrils in the human cornea and sclera.(maiden name Komai)

Doctor:Yasuhiro Shinkawa

(Registered Recipient of a Diploma of Ophthalmology)


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


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: Ikebukuro Sunshine Street Eye Clinic

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