I had that happen years ago after a high blood pressure event from a very stressful work day. I lost some vision in the eye, at night, and had a shadow during the day.

I had to go to a retinal specialist who did an angiogram showing a blood clot in the right branch vein in the left eye.

This can also be caused from high homocysteine levels, which build up when B6, folate and B12 are low and not working right.
Perhaps you are one of the 10% who do not convert them in the body to their active forms. (P5P, methylfolate, and methylcobalamin). Failure with this conversion is a genetic problem, called a MTHFR mutation. People with this may develop high risk of heart attacks and strokes.

The RX Metanx is often given to correct this.

But a high blood pressure that is not controlled well with meds can be a cause. There are also retinopathies that happen in untreated diabetics. This causes bleeds too.

Low zinc can also affect the eye, leading to a macular degeneration from increased small blood vessel proliferation in the retina.

So several things can cause bleeds, or blood clots there.