'Cloudy Eye' is not a disease by itself, but is actually a
symptom for an eye ailment or abnormality. Possible
causes of cloudy eyes include: bacterial infection,
physical damage to the eye, cancerous growth, cataract,
water chemistry problems (such as ammonia poisoning), and nutritional deficiencies.
Cloudy eye is not very common but it is a fish health
concern for many aquarists (not just koi hobbyists).
>> milkiness over eyes
eyes becoming opaque in worse cases
>> loss of appetite and energy
ensure that the pond water is clean and the water chemistry is
in case the cloudy eye is due to a bacterial infection,
antibiotic treatments may work
some cloudy eye problems can not be cured