If you benefit from a 4x monocular (handheld telescope) this Bushnell 5x20 Golf Scope Rangefinder (Silver) could work for you. $17.95. Lots of the golfers sound pissed in their reviews because it really isn't a rangefinder, but for a person with visual impairment, who cares? It's $17.95! I can't vouch for the quality, but it would be worth trying.
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