You might try calling Dallas Services Low Vision Clinic. It's quite near to the seminary. I used to work there. They have a daycare and an optometrist who specializes in patients with vision loss. However, as employees we got to see her (Dr. Fleming) for our vision needs at a discount. They offer a discount to employees and clients of nonprofit organizations so if your husband is a student at the seminary and the seminary is a nonprofit you should qualify. Give them a call and just ask. Tell them your dilemma. They are a nonprofit and want to help the community. Here's their info:
They are located on Office Parkway off Haskell Avenue near I-75...very close to the seminary.