You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Retinal haemorrhage and explain in detail?
Retinal hemorrhage (UK English: retinal haemorrhage) is a disorder of the eye in which bleeding occurs in the retina, the light sensitive tissue, located on the back wall of the eye.  There are photoreceptor cells in the retina called rods and cones, which transduce light energy into nerve signals that can be processed by the brain to form visual images. Retinal hemorrhage is strongly associated with child abuse in infants and young children and often leaves such abused infants permanently blind. In older children and adults, retinal hemorrhage can be caused by several medical conditions such as hypertension, retinal vein occlusion (a blockage of a retinal vein), anemia, leukemia or diabetes.

Signs and symptoms
At the early stage, a retinal hemorrhage may not show any symptom at all.
Some symptoms may include:

Seeing floaters in the vision
Seeing cobwebs in the vision
Seeing haze or shadows
Distorted vision
Rapid flashes of light in peripheral vision
Red tint to vision
Blurriness
Sudden blindness
Headache

Causes
In adults, retinal hemorrhages are largely spontaneous, secondary to chronic medical conditions such as hypertension. They also commonly occur in high altitude climbers, most likely due to the effects of systemic hypoxia on the eye. Risk is correlated with the maximum altitude reached, duration of exposure to high altitude conditions, and climb rate.In infants, retinal hemorrhages (RH) are highly associated with child abuse. The incidence of RH in abusive head trauma is approximately 85%. In a comprehensive review of 62 studies comprising 998 children, 504 of whom were abused, RH were found in 78% of cases of abusive head trauma (AHT) versus 5% of the cases of non-abusive head trauma. In a child with head trauma and RH, the odds ratio that this is AHT is 14.7 (95% CI 6.39, 33.62) and the probability of abuse is 91%