1. As a cataract becomes more opaque, clear vision is compromised.
2. A loss of visual acuity is noted.
3. Contrast sensitivity is also lost, so contours, shadows and color vision are less vivid. Veiling glare can also be a problem, as light is scattered by the cataract into the eye.
3.The affected eye will have an absent red reflex. These are the symptoms in the encyclopaedia. If these are the signs your father eyes present, he is advised to take a contrast sensitivity test, and if a loss is demonstrated, an eye specialist consultation is recommended. It may be advisable to seek medical opinion, particularly in high-risk groups such as diabetics, if a "halo" is observed around street lights at night, especially if this phenomenon appears to be confined to one eye only. The symptoms of cataracts are very similar to the symptoms of ocular citrous.