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Retinal detachment is a condition where the retina pulls away from the tissue underneath it. [1] [2] [3] It may start in a small area, but without quick treatment, it can spread across the entire retina, leading to serious vision loss and possibly blindness. [4]
Retinal tufts increase the risk of a retinal tear or a detached retina, although the risk is not high- 1% of tufts are thought to lead to retinal detachment. [ 2 ] [ 6 ] In addition if there is retinal thinning near a zonular traction tuft, there is an increased risk of retinal detachment.
Recently, central serous chorioretinopathy has been understood to be part of the pachychoroid spectrum. [5] [6] In pachychoroid spectrum disorders, of which CSR represents stage II, the choroid, the highly vascularized layer below the retina, is thickened and congested with increased blood vessel diameter, especially in the deep choroid (the so-called Haller's layer).
Proliferative vitreoretinopathy (PVR) is a disease that develops as a complication of rhegmatogenous retinal detachment.PVR occurs in about 8–10% of patients undergoing primary retinal detachment surgery and prevents the successful surgical repair of rhegmatogenous retinal detachment.
The goal of the treatment is to fix the cause of the hemorrhage as quickly as possible. Retinal tears are closed by laser treatment or cryotherapy, and detached retinas are reattached surgically. [6] Even after treatment, it can take months for the body to clear all of the blood from the vitreous. [2]
The risk of retinal detachment is the greatest in the first 6 weeks following a vitreous detachment, but can occur over 3 months after the event.. The risk of retinal tears and detachment associated with vitreous detachment is higher in patients with myopic retinal degeneration, lattice degeneration, and a familial or personal history of previous retinal tears/detachment.
4th light cavalry division (detached from the Cavalry Reserve) GD Lasalle † 1,843 38 360 90 1st Brigade: GB Bruyères: 13th Chasseur à Cheval Regiment (3 sq.) Col Demengeot 24th Chasseur à Cheval Regiment (3 sq.) Col Ameil: 2nd Brigade: GB Piré: 8th Hussar Regiment (4 sq.) Col Laborde † 16th Chasseur à Cheval Regiment (4 sq.) Col Maupoint
Benedetto Brin was the second and final member of the Regina Margherita class of pre-dreadnought battleships built for the Italian Regia Marina between 1899 and 1905. She was armed with a main battery of four 305 mm (12 in) guns and had a top speed of 20 knots (37 km/h; 23 mph).