Rich2001,
We do both ASME BPV work (Section III & VIII) as well as military work. We require all welders to pass Jaeger-1 near vision test annually. Additionally, any welder involved with Titanium welding must take color deficiency test. We test welders because, for Section VIII work, they perform the acceptance test of fillet size and shape as well as visual inspection for cracks, excessive porosity, etc.
We administer the test internally - the NDE Level III administers it. It has never been an issue. We have the reading card and all welders (as well as other areas) simply read the couple of sentences. It takes about a minute, including the paperwork.
If someone fails the exam, the company provides perscription safety glasses at no charge. ADA act issues have never come up. I don't know that we ever looked into them. As long as it is administered in house, ADA may never come up.
JR97