Cataracts can only be treated surgically. However, and this is very important, they should only be removed if they are materially interfering with the patient’s lifestyle! I have personally had both cataracts removed. The surgery is not very dangerous or difficult to get through and any competent eye surgeon who has done a lot of cataract cases should be well equipped to get him through it.
Cataract surgery is pain free, and one of the most successful of all operations as the parts of the surgery are extremely well controlled and predictable. Diabetics commonly develop cataracts in older age and there is no additional risk to surgery in this group with well controlled diabetes. Dense cataracts prevent viewing of the back of the eye, and cataract removal in diabetics is sometimes necessary when there are diabetic changes in the back termed "diabetic retinopathy". There is a small increased risk if the cataract removal is delayed and becomes advanced, so do not put this off.
Alas, this is not the case. It is a normal part of aging and cataract surgery has been around since the time of the Egyptians, who would 'couch' or push the cataract into the back of the eye and to the side with a sharp reed (since there was no way to remove it surgically in those days).
Nowadays, it is one of the most common procedures performed in the world and is extremely safe with a very low complication rate. It has also been shown improve the quality of life in elderly people as well as decrease the rates of accidental falls and fractures, as well as depression.
In good hands and at a reputable place, he has an excellent prognosis. If his diabetes is controlled, it usually does not have a bearing in most cases.
Cataract surgery is the most common surgery performed in the USA. While no surgery is risk-free, cataract surgery most commonly is successful and without complication. The choice of surgeon is of paramount importance!! Sight affects quality of life to a tremendous degree. Your father is a relatively young man, by today's standards! Please go with him and meet with an experienced cataract surgeon.
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