1 / 8

Retinopathy of prematurity (ROP)

Retinopathy of prematurity (ROP). Proliferative retinopathy Affects pre -term infants exposed to high ambient oxygen concentrations

lisabel
Download Presentation

Retinopathy of prematurity (ROP)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Retinopathyofprematurity(ROP) • Proliferativeretinopathy • Affectspre-term infantsexposed to high ambient oxygen concentrations • After 8 monthsofgestationretinalvesselsreachthenasalperipheryof retina, althoughthey do not reachthetemporalperipheryuntil 1 monthafterdelivery • Incompletelyvascularizedtemporal retina issusceptible to oxygen damage

  2. Clinical features Theseverityof ROP canbedeterminedaccording to location, extent, stages and „plus“ disease. Locationisdeterminedaccording to 3 zonescentred on theopticdisc. • Zone 1isbounded by theimaginarycirclewhosradiusistwicethe distance fromthedisc to themacula • Zone 2extendsfromtheedgeofzone 1 to a point tangential to thenasaloraserrata and round to an area neartemporalequator • Zone 3consistsof a residualtemporalcrescentanterior to zone 2

  3. Clinicalfeatures5 stages Stagingis a follows: • Stage 1 = demarcation line. Thin, tortuous, grey-white line whichrunsparallelwiththeoraserrata. The line separatestheavascularimmatureperipheral retina fromthevascularposterior retina. • Stage 2 = ridge. The demarcation line develops into a ridge of tissue, which extends out of the plane of the retina. The ridge represents a mesenchymal shunt which joins veins with arteries.

  4. 5 stages • Stage 3 = ridge with extraretinal fibrovascular proliferation. Retinal and vitreous haemorrhage also develop. • Stage 4 = subtotal retinal detachment. Progression of fibrovascular proliferation give rise to a tractional detachment. • Stage 5 = total retinal detachment.

  5. „Plus“ disease Is characterized by dilatation of the veins and tortuosity of the arterioles in the posterior fundus. When these changes are present, a „plus“ sign is added to the stage number.

  6. Screening • Examination of the retina in all infants born at less than 36 months or weighing less than 1500g, who have received supplemental oxygen • The pupils in a pre-term infant should be dilated (2,5% phenylephrine)

  7. Treatment • Ablation of avascular immature retina by either cryotherapy or laser photocoagulation (stage 3) • Scleral buckling with or without PPV (stage 4,5)

More Related