Ankh Tattoo Meaning An Egyptian symbol of love and life, the two are interconnected in an inseparable way with the Ankh, also known as the crux ansata in Latin. This cross-like sign is one of the most common in Egyptian iconography, pictured with all of the gods and goddesses of their religious tradition.
Night blindness is due to a disorder of the cells in the retina that are responsible for vision in dim light. It has many causes, including: 1  Nearsightedness. 2  Glaucoma.3  Glaucoma medications that work by constricting the pupil. 4  Cataracts.5  Diabetes. 6  Retinitis pigmentosa. 7  Vitamin A deficiency.ight blindness is due to a disorder of the cells in the retina that are responsible for vision in dim light. It has many causes, including: 1  Nearsightedness. 2  Glaucoma.
retinitis pigmentosa A slow degenerative disorder of the rods and cones of the RETINAS of both eyes with migration of pigment from the retinal pigment layer. Initially, this causes night blindness only but later there is progressive loss of an ever-enlarging area of the peripheral field of vision. This condition is not inflammatory and the term is misnomer. Retinitis pigmentosa varies greatly in age of onset and severity. In 60 percent of cases it has a known genetic basis and more than 45 causal genes have been identified. The remainder are also believed to be caused by gene mutations.