yes it's traditions. old mentality...that won't change I guess. and your right it should not hamper marriage.

Same as other handicaps. MY sister in law got menigitis at 8 months old, she ended up in wheelchair since she was old enough to walk since this disease. But she is very independent. And accountant in Beirut. My brother fell in love with her just from her picture I had on my pc ( she is my best friend). It took her family very long time to beleive anyone would want to marry her.
they are happily married with a 3 yr old son now .
So being blind etc should not take away from the right to be human and use your other senses to be a loving, wife and mother etc.

Salam