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In Pennsylvania, to qualify for a driver's license, your vision must be 20/40 or better.
If worse than 20/40, then you may qualify for a driver's license restricted to daytime driving only.
Vision less than 20/100 does not qualify for a driver's license.
For visual fields, a person must have visual fields of 120 degrees or greater with both eyes open. If there is doubt regarding this, then your friend's eye doctor can perform a test to document this.