Abstract
In 1969 B. P. Gloor demonstrated that after photocoagulation of the rabbit retina wound healing occurred with a marked increase in mitosis not only in the choroid, pigment epithelium and retina where mainly Muller cells were proliferating but also in the cortical vitreous cells, the hyalocytes.
The present paper reports morpholo gical changes of the hyalocytes after photocoagulation which were observed with an electronmicroscope. On the 3rd-5th day after mild photocoagulation the hyalocytes increased in number and numerous cytoplasmic granules and phagocytotic vesicles were observed in the cytoplasm of the hyalocytes. This finding may suggest an increased production of polymucosaccharide of the hyalocytes.
Following a marked coagulation numerous phagocytotic vesicles appear in the cytoplasm of the cells in the early stage and cytoplasmic granules appear in the later stage. The author presume that phagocytotic activities of the hyalocytes appear first and an increased production of polymucosaccharide appear in the later stage following a maked photocoagulation.
