Hello I am Dr. Joey. Thanks for trusting me to help you and your pet today. I am a licensed veterinarian with over 16 years of experience. I look forward to working with you.
When you say blood injections I assume you mean your veterinarian took your dog's blood, spun it and you are using serum in the eye. This can be very helpful for deep ulcers. In some older dogs, Boxers in particular, these ulcerations can take weeks, maybe months to heal and be super frustrating. So one month is not out of the realm of extraordinary. However, other factors to consider. First, I always screen my boxers for hypothyroidism, which can be a contributing factor to developing and non-healing of an indolent ulceration like this. It is also easily treated. Screening with a full thyroid panel would be indicated.
Second, if not already done at this point if it is not healing, this is probably indolent and needs to have the redundant, non adhering edges of the cornea removed, which your vet can easily do on most dogs with a topical anesthetic and then a grid keratotomy. These are easy and work great to promote the layers of the cornea to communicate and heal. If your vet has not done this, then I would recommend you request a referral to your local ophthalmologist for consultation.
The serum is great. We have other products as well we can try that help healing such as use of Adequan solution in the eye or Repair Corneal gel, but I do find the serum works great even if it is only good for a week at most and then must be replaced.
As to the redness, if this is in the white of the eye, then this may be a topical reaction to the serum or indicate there is an infection. This does warrant your vet to take a look at the eye tomorrow for a recheck. But, sometimes on the cornea, itself, there will be neovascularization along the periphery to give it the redness, which is completely normal. Always better to err on the side of caution but I want to be optimistic and say it is the eye trying to heal. I would really discuss the techniques mentioned above with your veterinarian.
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