Assuntos
Terapia a Laser , Lasers/métodos , Descolamento Retiniano/cirurgia , Animais , Lasers/instrumentação , CoelhosRESUMO
In cases with persistent primary vitreous in full-term infants there were vitreoretinal reactions including vitreoretinal anastomoses of blood vessels, vitreoretinal strands, traction folds of the retina, avascular retinal areas, hypoplasia of retinal blood vessels, rarefaction of retinal ganglion cells, and ischaemic structural changes of the retina. New vessel formation on the surface of avascular retinal areas was supplied from persistent hyaloid blood vessels. This finding may be of some importance in explaining those cases histologically resembling classical retrolental fibroplasia with no history of prematurity or oxygen treatment.
Assuntos
Vasos Retinianos/patologia , Corpo Vítreo/anormalidades , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Retina/patologia , Retinopatia da Prematuridade/etiologia , Corpo Vítreo/irrigação sanguínea , Corpo Vítreo/patologiaRESUMO
Out of 22 patients with corneal dermoids, 9 showed other abnormalities consistent with the 1st branchial arch syndrome. In 4 cases there was hare lip, divided jaw and /or cleft palate along-side other abnormalities which made impossible a sure classification into one of the recognised syndromes. It is assumed that the anomalies arise in the 5th and 6th intrauterine week. The corneal dermoids were always unilateral and in only one case confined in position to the cornea.
