Ophthalmology Examinations Review, The (Third Edition) by Tien Yin Wong & Wesley Guang Wei Chong & Zhu Li Yap & Saadia Farooqui

Author:Tien Yin Wong & Wesley Guang Wei Chong & Zhu Li Yap & Saadia Farooqui
Language: eng
Format: epub
ISBN: 9789813221024
Publisher: World Scientific Publishing Company
Published: 2019-05-29T00:00:00+00:00

Q What is Radiation Retinopathy?

Radiation Retinopathy

1.Pathology

•Damage to retinal vasculature after exposure to ionizing radiation

•Microangiopathy (like DR)

•Dose dependent (high risk if > 7,000 rads)

2.Presentation

•Asymptomatic early on

•Present with decreased VA four months to three years after treatment (external beam or local plaque therapy)

•Progressive loss of VA

3.Clinical findings

•Retinopathy (hemorrhages, cotton wool spots, hard exudates, microaneurysms)

•Perivascular sheathing, telangiectasia

•Complications

•New vessels → vitreous hemorrhage, tractional RD, neovascular glaucoma

•CRAO and CRVO

•Maculopathy (exudative, edematous, ischemic — like diabetic maculopathy)

•Papillopathy

4.Treatment

•FFA → look for capillary nonperfusion

•Focal laser and PRP

•Papillopathy: Systemic steroids

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