^ a b c Solar Retinopathy: Etiology, Diagnosis, and Treatment."Solar retinopathy: its significance for the ageing eye and the younger pseudophakic patient." Aust N Z J Ophthalmol. "UK hospitals assess eye damage after solar eclipse." BMJ. "Solar retinopathy and associated optical coherence tomography findings." Archived at the Wayback Machine Clin Exp Optom. "Photo-induced foveal injury after viewing a solar eclipse." Acta Ophthalmol Scand. ^ a b c Sefic-Kasumovic S, Firdus H, Alimanovic E, Ljaljevic S, Sefic M."Retinal Injuries from Light: Mechanisms, Hazards, and Prevention". ^ a b Mainster, Martin A Turner, Patricia L.Generally speaking, people diagnosed with photic retinopathy recover visual acuity completely within two months, though more severe cases may take longer, or not see complete recovery at all. One path sometimes attempted, which has unclear results, is to treat the initial macular edema with corticosteroids. Photic retinopathy generally goes away on its own over time, but there is no specific treatment known to be reliable for speeding recovery. Ī doctor examining an eye with retinopathy may be able to see no signs at all, or a slight macular edema, which is a sort of blister on or under the macula, an oval colored spot normally visible to an eye doctor on each person's retina.īut while even that edema goes away, within a few days the patient will generally develop a discoloration of the retina at the injured point, often yellow or white, turning red over the next few weeks. Impairment of a person with 20/20 vision usually ends up being about 20/40 or 20/60, but can be better or far worse. Vision impairment is usually in both eyes, but can be in just one. They may also have eye pain or headaches.
The duration of exposure necessary to cause injury varies with the intensity of light, and also affects the possibility and length of recovery.Ī person with photic retinopathy may notice an impairment in their vision, for example a spot that does not go away after a reasonable recovery time, or blurring. It also appears that central serous retinopathy can be a result of a depression in a treated solar damaged eye. The energy is still phototoxic: since light promotes oxidation, chemical reactions occur in the exposed tissues with unbonded oxygen molecules. The temperature rise from looking at the Sun with a 3-mm pupil only causes a 4 ☌ increase in temperature, insufficient to photocoagulate. Permanent holes and lesions are possible prognosis worsens with dilated pupils or prolonged exposure.Īlthough it is frequently claimed that the retina is burned by looking at the Sun, retinal damage appears to occur primarily due to photochemical injury rather than thermal injury. After a few days it is replaced by a reddish dot often surrounded by pigment.
The fundus changes are variable and usually bilateral, mild cases often show no alteration and moderate to severe cases show a foveal yellow spot on the first days after exposure. Vision loss due to solar retinopathy is typically reversible, lasting for as short as one month to over one year.
0 kommentar(er)
