Ophthalmologic disease

Eye Structure and Function

associated diseases

1.posterior chamber、anterior chamber	It’s clear liquid which provides some nutrition to the cornea and the lens. It’s made from the ciliary epithelium, and it helps the eye pressure be stable. glaucoma uveitis exfoliation glaucoma developmental glaucoma normal tension glaucoma secondary glaucoma malignant glaucoma traumatic glaucoma rubeotic glaucoma primary open angle glaucoma primary angle closure glaucoma mixed glaucoma steroid induced glaucoma ・ocular hypertension ・traumatic iritis
2.cornea	It’s a clear membrane which forms the adventitia of your eye. It’s also the entrance of a ray, so it can be a lens as same as the crystalline lens. keratoconus ・diffuse lamellar keratitis ( superficial punctate keratopathy) ・corneal erosion ・phlyctenular keratitis ・corneal perforation ・corneal ulcer ・corneal opacity ・herpes keratitis ・corneal dystrophy ・corneal dermoid ・bullous keratopathy ・epidemic keratoconjunctivitis ・interstitial keratitis ・keratoconjunctivitis sicca ・acanthamoeba keratitis ・keratoconjunctivitis
3.iris	It has 2 types of muscles called the iris dilator muscle and the iris sphincter muscle, and they control the amount of the light depending on the brightness. uveitis(Bechet’s disease) uveitis(sarcoidosis) ・uveitis(Harada disease) ・iritis ・traumatic iritis ・iridodialysis ・iris synechia
4.ciliary body	It fixes the iris from behind and produces the aqueous fluid. It also has the ciliary muscle which changes the thickness of your lens to focus the image on your retina. uveitis(Bechet’s disease) uveitis(sarcoidosis) ・uveitis(Harada disease) ・iridodialysis
5.canal of Schlemm	It has the ciliary vessels and the pigment particles and provides some nutrition to your retina. It also prevents from getting the unnecessary light such as a darkroom for the camera. uveitis(Bechet’s disease) uveitis(sarcoidosis) ・uveitis(Harada disease) ・choroidal atrophy ・choroiditis
6.choroid coat	It protects the exposed part of your eyeball to make the eye movement easier. allergic conjunctivitis subconjunctival hemorrhage epidemic keratoconjunctivitis ・conjunctival concretion ・pterygium ・pinguecula ・keratoconjunctivitis sicca(dry eye) ・conjunctival foreign body ・bacterial keratoconjunctivitis ・phlyctenular conjunctivitis ・conjunctivochalasis
7.Zinn’s zonule	it’s structured by the gathering of the clear and thin fibers, and it supports the eye accommodation with your lens and ciliary body. ・ectopia Lentis
8.vitreous	it’s a clear gel which compose the most of the part of your eyeball. The light passes through it. ・posterior vitreous detachment ・vitreous hemorrhage ・synchesis scintillans ・vitreous hemorrhage ・asteroid hyalosis ・vitreous opacity ・persistent hyperplastic primary vitreous
9.lens	It’s like a lens of the camera, it focuses in conjunction with your ciliary body. cataract ・ectopia Lentis ・lens dislocation
10.sclera	It’s a membrane which forms your eyeball, and it has a role as a body of the camera. ・episcleritis ・scleritis
11.retina	it’s like a film of the camera, and it has two photoreceptor cells which transform the light to the electric signal. retinal detachment retinal tear diabetic retinopathy age related macular degeneration retinitis pigmentosa ・retinal hole ・synchysis scintillans ・posterior vitreous detachment ・retinal microaneurysm ・central retinal vein occlusion ・lattice degeneration ・retinal artery occlusion
12.central fovea	It’s a part of your retina which shows you the clearest images. epiretinal membrane macular hole age related macular degeneration ・macular edema ・central retinopathy
13.optic nerve	It tells the electric signals sent from your retina to the visual cortex. ・optic neuritis ・papilledema optic neuropathy ・traumatic glaucoma ・rubeotic glaucoma ・primary open angle glaucoma ・primary angle closure glaucoma ・mixed glaucoma ・steroid induced glaucoma ・exfoliation glaucoma ・ developmental glaucoma ・malignant glaucoma ・ocular hypertension ・ optic atrophy
14.optic papilla	It’s a beginning of the optic nerve which is the bundle of the optic nerve fibers on your retina. glaucoma exfoliation glaucoma developmental glaucoma malignant glaucoma traumatic glaucoma rubeotic glaucoma primary open angle glaucoma primary angle closure glaucoma mixed glaucoma steroid induced glaucoma ・ocular hypertension ・enlarged optic disc cupping ・Harada disease ・central retinal vein occlusion ・myopia ・ocular hypertension

1.posterior chamber、anterior chamber

It’s clear liquid which provides some nutrition to the cornea and the lens. It’s made from the ciliary epithelium, and it helps the eye pressure be stable.

・ocular hypertension
・traumatic iritis

2.cornea

It’s a clear membrane which forms the adventitia of your eye. It’s also the entrance of a ray, so it can be a lens as same as the crystalline lens.

keratoconus

・diffuse lamellar keratitis ( superficial punctate keratopathy)
・corneal erosion
・phlyctenular keratitis
・corneal perforation
・corneal ulcer
・corneal opacity
・herpes keratitis
・corneal dystrophy
・corneal dermoid
・bullous keratopathy
・epidemic keratoconjunctivitis
・interstitial keratitis
・keratoconjunctivitis sicca
・acanthamoeba keratitis
・keratoconjunctivitis

3.iris

It has 2 types of muscles called the iris dilator muscle and the iris sphincter muscle, and they control the amount of the light depending on the brightness.

uveitis(Bechet’s disease)
uveitis(sarcoidosis)

・uveitis(Harada disease)
・iritis
・traumatic iritis
・iridodialysis
・iris synechia

4.ciliary body

It fixes the iris from behind and produces the aqueous fluid. It also has the ciliary muscle which changes the thickness of your lens to focus the image on your retina.

・uveitis(Harada disease)
・iridodialysis

5.canal of Schlemm

It has the ciliary vessels and the pigment particles and provides some nutrition to your retina. It also prevents from getting the unnecessary light such as a darkroom for the camera.

・uveitis(Harada disease)
・choroidal atrophy
・choroiditis

6.choroid coat

It protects the exposed part of your eyeball to make the eye movement easier.

・conjunctival concretion
・pterygium
・pinguecula
・keratoconjunctivitis sicca(dry eye)
・conjunctival foreign body
・bacterial keratoconjunctivitis
・phlyctenular conjunctivitis
・conjunctivochalasis

7.Zinn’s zonule

it’s structured by the gathering of the clear and thin fibers, and it supports the eye accommodation with your lens and ciliary body.

・ectopia Lentis

8.vitreous

it’s a clear gel which compose the most of the part of your eyeball. The light passes through it.

・posterior vitreous detachment
・vitreous hemorrhage
・synchesis scintillans
・vitreous hemorrhage
・asteroid hyalosis
・vitreous opacity
・persistent hyperplastic primary vitreous

9.lens

It’s like a lens of the camera, it focuses in conjunction with your ciliary body.

cataract

・ectopia Lentis
・lens dislocation

10.sclera

It’s a membrane which forms your eyeball, and it has a role as a body of the camera.

・episcleritis
・scleritis

11.retina

it’s like a film of the camera, and it has two photoreceptor cells which transform the light to the electric signal.

・retinal hole
・synchysis scintillans
・posterior vitreous detachment
・retinal microaneurysm
・central retinal vein occlusion
・lattice degeneration
・retinal artery occlusion

12.central fovea

It’s a part of your retina which shows you the clearest images.

・macular edema
・central retinopathy

13.optic nerve

It tells the electric signals sent from your retina to the visual cortex.

・optic neuritis
・papilledema optic neuropathy
・traumatic glaucoma
・rubeotic glaucoma
・primary open angle glaucoma
・primary angle closure glaucoma
・mixed glaucoma
・steroid induced glaucoma
・exfoliation glaucoma
・ developmental glaucoma
・malignant glaucoma
・ocular hypertension
・ optic atrophy

14.optic papilla

It’s a beginning of the optic nerve which is the bundle of the optic nerve fibers on your retina.

・ocular hypertension
・enlarged optic disc cupping
・Harada disease
・central retinal vein occlusion
・myopia
・ocular hypertension

Doctor career

Director:Yasuhiro Shinkawa

(Registered Recipient of a Diploma of Ophthalmology)

Appointment form

Memberships

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

Career

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)

Appointment form

Memberships

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

Career

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.

Disease special page

Eye Structure and Function

associated diseases

1.posterior chamber、anterior chamber

2.cornea

3.iris

4.ciliary body

5.canal of Schlemm

6.choroid coat

7.Zinn’s zonule

8.vitreous

9.lens

10.sclera

11.retina

12.central fovea

13.optic nerve

14.optic papilla

Others

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Doctor career

Director:Yasuhiro Shinkawa

Memberships

Certification of Completion

Career

Doctor:Fumiyo Hasegawa

Memberships

Career

Main Thesis