Please answer the following question: Information: - Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina. This form of retinal dystrophy manifests initial symptoms independent of age; thus, RP diagnosis occurs anywhere from early infancy to late adulthood. Patients in the early stages of RP first notice compromised peripheral and dim light vision due to the decline of the rod photoreceptors. The progressive rod degeneration is later followed by abnormalities in the adjacent retinal pigment epithelium (RPE) and the deterioration of cone photoreceptor cells. As peripheral vision becomes increasingly compromised, patients experience progressive "tunnel vision" and eventual blindness. Affected individuals may additionally experience defective light-dark adaptations, nyctalopia (night blindness), and the accumulation of bone spicules in the fundus. - Nyctalopia (from Greek -, "nykt-" "night"; , "alaos" "blind, not seeing", and , "ops" "eye"), also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, a lack of vitamin A). It can be described as insufficient adaptation to darkness. - Assia El Hannouni , born May 30 , 1981 in Dijon , is a French track and field athlete who specialises in the 800 metres Paralympic sprint . She has Retinitis pigmentosa which means that she is almost blind , with less than one tenth vision in her left eye , and zero in her right eye . She also runs against athletes without disabilities , in 800m sprint events . Representing her country at the 2004 Summer Paralympics in Athens , she won four gold medals , winning the 100m , 200m , 400m and 800m sprints , and breaking the world record in each event . She represented France again at the 2008 Summer Paralympics in Beijing , and was the country 's flagbearer during the Games ' opening ceremony . She won silver in the 800m sprint ( T13 / 12 ) with a time of 2 '' 4 '' '' 96 , before winning silver in the 1500m , and gold in both the 200m and 400m sprints . In 2007 , she set a new world record in the women 's 800 metre sprint in her disability category , with a time of 2 '' 6 '' '' 76 . The same year , she competed against non-disabled athletes in the 800 metres at the French national indoors championships , finishing fifth . As of 2007 , El Hannouni is studying journalism at the Institut national du sport et de l'education physique ( National Institute of Sport and Physical Education ) . What object entity has the relation of 'medical condition' with the subject 'assia el hannouni'? Choices: - blindness - degeneration
A:
blindness