There is no mention of whether the incision is temporal or superior.  Superior incisions don’t bleed much. Temporal incisions do bleed.  I use temporal incisions almost always, unless the patient has with-the-rule (WTR) astigmatism.

If you ever think that an episcelral vessel is going to bleed, you can cauterize gently before you start making the scleral groove.

But the main issue I can see here is you have not made enough corneal valve which is very essential for a scleral pocket incision.

If you have a good corneal valve [which can be made by dissecting at least 1mm in to the corneal stroma while making the tunnel] all these problems can be avoided. A good corneal valve prevents the blood from going into the anterior chamber and a good corneal valve helps to retain the air bubble successfully in the anterior chamber.

You can not go inside the internal corneal lip and cauterize. If it starts bleeding, then try to use a full air bubble to tamponade. That air bubble should be full, really full, causing corneal haziness. Reassure the patient that s/he may not see better for a day or two, but once the bubble gets absorbed the vision will be regained.

We went through this many times, but it can be helped.

We have a movie clip in the manual SICS course on the Cyber-Sight website which shows rigid pupil and hyphema. Please go through it and you can get a clue.