Intraretinal microvascular abnormalities

Human eye cross-sectional/ retina view
Specialty| Ophthalmology

Intraretinal microvascular abnormalities (IRMA) are abnormalities of the blood vessels that supply the retina of the eye, a sign of diabetic retinopathy.[1] IRMA can be difficult to distinguish from and is likely a precursor to retinal neovascularization. One way to distinguish IRMA from retinal neovascularization is to perform fluorescein angiography. Since IRMA blood vessels are patent, unlike neovascular vessels, they do not leak, and therefore exhibit hyperfluorescence on fluorescein angiography.

IRMA is deeper in the retina than neovascularization, has blurrier edges, is more of a burgundy than a red, does not appear on the optic disc, and is usually seen after a shorter period of poorly controlled diabetes than neovascularization.

## References

1. ↑ Shimouchi, Akito; Ishibazawa, Akihiro; Ishiko, Satoshi; Omae, Tsuneaki; Ro-Mase, Tomoko; Yanagi, Yasuo; Yoshida, Akitoshi (9 March 2020). "A Proposed Classification of Intraretinal Microvascular Abnormalities in Diabetic Retinopathy Following Panretinal Photocoagulation" (in en). Investigative Ophthalmology & Visual Science 61 (3): 34. doi:10.1167/iovs.61.3.34. ISSN 1552-5783. PMID 32191287. PMC 7401423. https://iovs.arvojournals.org/article.aspx?articleid=2763448. Retrieved 12 September 2022.

## Further reading

* Sorour, Osama A.; Mehta, Nihaal; Baumal, Caroline R.; Ishibazawa, Akihiro; Liu, Keke; Konstantinou, Eleni K.; Martin, Sarah; Braun, Phillip et al. (2020). "Morphological changes in intraretinal microvascular abnormalities after anti-VEGF therapy visualized on optical coherence tomography angiography". Eye and Vision 7 (1): 29. doi:10.1186/s40662-020-00195-2. ISSN 2326-0254. PMID 32514410.
* Shimouchi, Akito; Ishibazawa, Akihiro; Ishiko, Satoshi; Omae, Tsuneaki; Ro-Mase, Tomoko; Yanagi, Yasuo; Yoshida, Akitoshi (March 19, 2020). "A Proposed Classification of Intraretinal Microvascular Abnormalities in Diabetic Retinopathy Following Panretinal Photocoagulation". Investigative Opthalmology & Visual Science (Association for Research in Vision and Ophthalmology (ARVO)) 61 (3): 34. doi:10.1167/iovs.61.3.34. ISSN 1552-5783. PMID 32191287.

## External links

Classification|

* ICD-11: 9B7Y
* ICD-10: H35.8
* ICD-10-CM: H35.09
* ICD-9-CM: 362.17

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External resources|

* Scholia: Q6058536

* v
* t
* e

* Diseases of the human eye (H00–H59
* 360–379)

Adnexa

| Eyelid|

| Inflammation|

* Stye
* Chalazion
* Blepharitis

|

* Entropion
* Ectropion
* Lagophthalmos
* Blepharochalasis
* Ptosis
* Blepharophimosis
* Xanthelasma

Eyelash|

* Trichiasis
* Madarosis

Lacrimal apparatus|

* Dacryoadenitis
* Epiphora
* Dacryocystitis
* Xerophthalmia

Orbit|

* Exophthalmos
* Enophthalmos
* Orbital cellulitis
* Orbital lymphoma
* Periorbital cellulitis

Conjunctiva|

* Conjunctivitis
* allergic
* Pterygium
* Pinguecula
* Subconjunctival hemorrhage

Globe

| Fibrous tunic|

| Sclera|

* Scleritis
* Episcleritis

|

Cornea|

* Keratitis
* herpetic
* acanthamoebic
* fungal
* Corneal ulcer
* Photokeratitis
* Thygeson's superficial punctate keratopathy
* Corneal dystrophy
* Fuchs'
* Meesmann
* Corneal ectasia
* Keratoconus
* Pellucid marginal degeneration
* Keratoglobus
* Terrien's marginal degeneration
* Post-LASIK ectasia
* Keratoconjunctivitis
* sicca
* Corneal neovascularization
* Kayser–Fleischer ring
* Haab's striae
* Arcus senilis
* Band keratopathy

Vascular tunic|

* Iris
* Ciliary body

* Uveitis
* Intermediate uveitis
* Hyphema
* Rubeosis iridis
* Persistent pupillary membrane
* Iridodialysis
* Synechia

|

Choroid|

* Choroideremia
* Choroiditis
* Chorioretinitis

Lens|

* Cataract
* Congenital cataract
* Childhood cataract
* Aphakia
* Ectopia lentis

Retina|

* Retinitis
* Chorioretinitis
* Cytomegalovirus retinitis
* Retinal detachment
* Retinoschisis
* Ocular ischemic syndrome / Central retinal vein occlusion
* Central retinal artery occlusion
* Branch retinal artery occlusion
* Retinopathy
* diabetic
* hypertensive
* Purtscher's
* of prematurity
* Bietti's crystalline dystrophy
* Coats' disease
* Macular degeneration
* Retinitis pigmentosa
* Retinal haemorrhage
* Central serous retinopathy
* Macular edema
* Epiretinal membrane (Macular pucker)
* Vitelliform macular dystrophy
* Leber's congenital amaurosis
* Birdshot chorioretinopathy

Other|

* Glaucoma / Ocular hypertension / Primary juvenile glaucoma
* Floater
* Leber's hereditary optic neuropathy
* Red eye
* Globe rupture
* Keratomycosis
* Phthisis bulbi
* Persistent fetal vasculature / Persistent hyperplastic primary vitreous
* Persistent tunica vasculosa lentis
* Familial exudative vitreoretinopathy

Pathways

| Optic nerve
Optic disc|

* Optic neuritis
* optic papillitis
* Papilledema
* Foster Kennedy syndrome
* Optic atrophy
* Optic disc drusen

Optic neuropathy|

* Ischemic
* anterior (AION)
* posterior (PION)
* Kjer's
* Leber's hereditary
* Toxic and nutritional

Strabismus
Extraocular muscles
Binocular vision
Accommodation|

| Paralytic strabismus|

* Ophthalmoparesis
* Chronic progressive external ophthalmoplegia
* Kearns–Sayre syndrome

palsies|

* Oculomotor (III)
* Fourth-nerve (IV)
* Sixth-nerve (VI)

Other strabismus|

* Esotropia / Exotropia
* Hypertropia
* Heterophoria
* Esophoria
* Exophoria
* Cyclotropia
* Brown's syndrome
* Duane syndrome

Other binocular|

* Conjugate gaze palsy
* Convergence insufficiency
* Internuclear ophthalmoplegia
* One and a half syndrome

Refraction|

* Refractive error
* Hyperopia
* Myopia
* Astigmatism
* Anisometropia / Aniseikonia
* Presbyopia

Vision disorders
Blindness|

* Amblyopia
* Leber's congenital amaurosis
* Diplopia
* Scotoma
* Color blindness
* Achromatopsia
* Dichromacy
* Monochromacy
* Nyctalopia
* Oguchi disease
* Blindness / Vision loss / Visual impairment

Anopsia|

* Hemianopsia
* binasal
* bitemporal
* homonymous
* Quadrantanopia

subjective|

* Asthenopia
* Hemeralopia
* Photophobia
* Scintillating scotoma

Pupil|

* Anisocoria
* Argyll Robertson pupil
* Marcus Gunn pupil
* Adie syndrome
* Miosis
* Mydriasis
* Cycloplegia
* Parinaud's syndrome

Other|

* Nystagmus
* Childhood blindness

Infections

* Trachoma
* Onchocerciasis

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Original source: https://en.wikipedia.org/wiki/Intraretinal microvascular abnormalities. Read more

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