Question: what are the characteristics of images formed on the retina

title: Retina
text: Retinitis pigmentosa is a group of genetic diseases that affect the retina and cause the loss of night vision and peripheral vision . Macular degeneration describes a group of diseases characterized by loss of central vision because of death or impairment of the cells in the macula . Cone - rod dystrophy ( CORD ) describes a number of diseases where vision loss is caused by deterioration of the cones and / or rods in the retina . In retinal separation , the retina detaches from the back of the eyeball . Ignipuncture is an outdated treatment method . The term retinal detachment is used to describe a separation of the neurosensory retina from the retinal pigment epithelium . There are several modern treatment methods for fixing a retinal detachment : pneumatic retinopexy , scleral buckle , cryotherapy , laser photocoagulation and pars plana vitrectomy . Both hypertension and diabetes mellitus can cause damage to the tiny blood vessels that supply the retina , leading to hypertensive retinopathy and diabetic retinopathy . Retinoblastoma is a cancer of the retina . Retinal diseases in dogs include retinal dysplasia , progressive retinal atrophy , and sudden acquired retinal degeneration . Lipemia retinalis is a white appearance of the retina , and can occur by lipid deposition in lipoprotein lipase deficiency .