retina oftalmologia glaucoma ojos ophthalmology eyes oftalmologo optometry vision catarata medicina oftalmo ophthalmologist cornea eyedoctor eyehealth saludvisual eyecare miopia oftalmolog woocommerce wordpress astigmatismo beauty cataracts doctor ecommerce eyeball glasses slitlamp
Retina, la tercera y más profunda túnica del ojo, su misión es transformar la luz que recibe, en un impulso nervioso que viaja hasta el cerebro a través del nervio óptico, y se convierte en las imágenes que percibimos. La luz llega a través de la córnea, cruzando la pupila y el cristalino hasta que llega a la retina. La retina está formada por diez capas bien diferenciadas. Están íntimamente conectadas para ir transformando la señal de luz que reciben en el impulso nervioso, las capas son:
1. Epitelio pigmentario, compuesto por células de células cuboidales a columnares cuyos núcleos se encuentran en la base.
2. Capa conos y bastones, alberga dos células fotorreceptoras llamadas bastones y conos.
4. Membrana limitante externa, es una región de adherencia de la zónula entre las células de Müller (células neurogliales modificadas) y los fotorreceptores.
5. Capa nuclear externa, zona ocupada principalmente por los núcleos de los bastones y conos.
6. Capa plexiforme externa, zona donde se presenta la sinapsis axodendrítica entre las células fotorreceptoras y las dendritas de las células bipolares y horizontales que se encuentran en la capa plexiforme externa.
7. Capa nuclear interna, encontramos los núcleos de las células bipolares, horizontales, amacrinas y Müller.
8. Capa plexiforme interna, los procesos de las células amacrinas, bipolares y ganglionares se entremezclan en esta capa.
9. Capa de células ganglionares, los cuerpos celulares de grandes neuronas multipolares de las células ganglionares se encuentran en esta capa.
10. Fibras del nervio óptico, allí encontramos fibras nerviosas formadas por adobes no mielinizados de las células ganglionares.
11. Membrana limitante interna, se compone por las láminas nasales de las células de Müller.
#histology #histologia #patology #medstudygram #medstudents #medicalstudent #medicalstudents #retina
A branch retinal vein occlusion (BRVO): seen through a pan retinal volk lens.
Superficial flames shaped retinal hemorrhages and macular edema seen. The lower portion shows normal vessels.
.
.
.#ophthalmictech #ophthalmology #eye_india #eyesurgery #retinalimaging #retina #eye #cataract #medicine #medical #medschool #lovemywork
Vogt-Koyanagi-Harada’s disease.
.
♀️, 49 yo.
.
‼️ OCT features include choroidal thickening, subretinal fluid, vitreous inflammation,
subretinal septae and RPE/choroidal folds (images 4 & 5).
.
.
Vogt–Koyanagi–Harada (VKH) is a multisystem autoimmune inflammatory disorder with ophthalmic, auditory, dermatologic, and neurologic manifestations. The prevalence of this disease varies with ethnicity. VKH characteristically affects pigmented groups, such as Hispanics, Asians, people from the Middle East, and Asian Indians, but not the blacks of sub-Saharan African descent. The extraocular manifestations appear in different phases of the disease and show ethnic variations. VKH disease accounts for 8% of uveitis in Japan, 2.9% in the Middle East, 1.2% in Europe, and 1%–4% in the USA. VKH is seen more frequently in an adult population, and women are more frequently affected. ......................................................................................VKH disease usually manifests as four distinct clinical phases: prodromal, acute uveitic, convalescent, and chronic recurrent. The prodromal phase features neurologic and auditory manifestations, including a headache, tinnitus, neck stiffness, and hearing loss. The acute uveitic phase shows diffuse choroiditis with exudative retinal detachment (RD) and optic disc swelling. A variable amount of anterior chamber and vitreous inflammation may be seen. In the acute phase, anterior uveitis seen in some patients usually presents as low-grade non-granulomatous anterior uveitis, while in the chronic recurrent phase, patients present with recurrent granulomatous anterior uveitis. “Sunset glow fundus,” due to depigmentation of the choroid, is the hallmark of the convalescent phase. Recurrent episodes of anterior uveitis are characteristic of the chronic recurrent phase.
This 19-year-old patient presents for routine exam. The vision is 20/20. What’s your favorite diagnosis?
•
•
Photographer: Sofia Sousa Mano, Hospital de Santa Maria
•
Co-author(s): Filomena Pinto
•
Imaging device:
Fundus camera
Canon CR 2 plus ——————————————————————
#eyes #oculos #ojos #olhos #optometry #ophthalmology #bronx #nyc #bronxeyecenter #brooklyneyecenter #drragusa #eyemd #medicine #surgery #doctor #disease #eyesurgeon #cornea #retina #glaucoma #eyesofinstagram #photography #photooftheday #igdaily #nofilter
Posterior Capsular Opacification (PCO).
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Definition:
Posterior Capsular Opacification viewer with Retro Illumination.
PCO results from the growth and abnormal proliferation of lens epithelial cells (LECs) on the posterior capsule.
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Yag Laser Capsulotomy.
Laser capsulotomy is a relatively noninvasive procedure that is used in the treatment of posterior capsular opacification.
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Image Source:
Captured by Hamza Mussa
Captured with iPhone 6S Plus & Keeler Symphony.
Photo captured and posted with permission of Patient.
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Caption Reference:
https://eyewiki.aao.org/Posterior_capsule_opacification.
https://emedicine.medscape.com/article/1844140-overview.
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Disclaimer:
* This is NOT Clinical Advice or Management.
* Just sharing patient experience.
. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
#Optician #Optometry #Ophthalmology #Ophthalmologist #Education #Medical #Doctor #Anterior #Posterior #Eye #Retina #Lens #Vitreous #Cataract #Slit #Lamp #Optics #Pathology #Clinical #Fundoscopy #OptomLife #Retinopathy #Keratopathy #Ophthalmoscopy #Cornea #Diagnosis #Student
Collecter les statistiques #RETINA effectuez une recherche à l'obtention des statistiques (Aller à la sélection).