Netzhautrissen

Netzhautrissen, also known as retinal tears, are separations in the retina, the light-sensitive tissue at the back of the eye. These tears occur when the vitreous, a gel-like substance filling the eye, pulls away from the retina. As the vitreous shrinks with age, it can cause traction on the retina, leading to a tear.

Symptoms of a netzhautriss can include sudden flashes of light, a significant increase in floaters (small specks or cobwebs that drift in the field of vision), or a dark curtain or shadow obscuring part of the vision. It is crucial to seek immediate medical attention if these symptoms are experienced, as a netzhautriss can lead to a more severe condition called retinal detachment.

Retinal detachment occurs when fluid passes through the tear and collects beneath the retina, lifting it away from its normal position. This deprives the retina of oxygen and nutrients, potentially causing permanent vision loss if not treated promptly.

Diagnosis typically involves a comprehensive eye examination by an ophthalmologist, including a dilated fundus examination. Treatment options for a netzhautriss depend on its size, location, and whether it has progressed to retinal detachment. Laser photocoagulation or cryopexy (freezing therapy) are common methods used to seal the tear and prevent further progression. In cases of retinal detachment, surgical intervention may be necessary. Early detection and treatment significantly improve the prognosis for preserving vision.