Excuse me, but I think the reference to Mr Harrod as dumped is disrespectful.
I think we can agree that he wasn't driving his car when he disappeared.
Legally blind?Not sure of the parameters, but if true and depending on his vision, Mr Harrod's CA driver's license would surely so indicate if it hadn't been revoked or denied at renewal, or at the very least specified a requirement that he must be wearing corrective lenses whenever driving. LE has this info if even relevant.
Left without his glasses? Has LE published this detail? afaik, it is unknown. Not suspicious in the least to me, because...many older persons have more than one pair and some have them designated (by Rx or even just pharmacy glasses) for reading, driving, watching TV, etc., each of a different strength/focal for the purpose. I would not be surprised to learn that Mr Harrod had several pairs, regardless of purpose; therefore, he could well have been wearing a pair when he went missing.
About the checkbook...fwiw (personal experience only):
1. My father was older than Mr Harrod and I never recall him carrying a checkbook in his pocket, be it sports slacks or business suit. A wallet, yes, with credit cards inside. A bulky checkbook, no. He didn't even have one; instead, he used a business checkbook (3 on a page) at his home/office for as long as I can remember.
2. My husband, down another generation, does not even use a checkbook anymore. This is not atypical...perhaps a California thing? I doubt it. I'm a female and haven't carried a checkbook in my handbag for years nor have I even asked my bank for a wallet-size for decades. I very rarely write checks anymore but when I do, I use a business model checkbook as well.
What does any of this mean to case? Ppl are different...genders, ages, and less likely localities included. My guess is that LE has interviewed persons close to Mr Harrod, starting with his family members and extending beyond, to learn his particular habits and just what kind of glasses or checkbook he had as well. All of this information is part of the case file.
And all of that feels right to me.
~jmo~