Transconjunctival lower blepharoplasty -- how does Ehlers Danlos and skin friability affect this?

Transconjunctival lower blepharoplasty should be safe procedure for you. It involves incision inside the lower eyelid, without skin cuts or eye shape change.

 In our practice, we perform a lower blepharoplasty through transcontinental approach which removes the fatty deposits in the lower lids creating the puffy look. There is no skin removal with this approach. A conservative amount of fat is removed from three compartments through two small 1/8 inch incisions. No sutures are required for this. Choose your surgeon wisely with extensive experience producing natural  eyelid results

I would think that the transconjunctival approach would be a better choice for you. You may have some delayed healing, but I wouldn't expect this to be a significant problem.

Transconjunctival blepharoplasty is done from the inside of the eyelid so there is no skin cut outside therefore skin healing is not an issue.  With Ehlers- Danlos, your skin has much less elasticity than normal and it is possible that you get some wrinkling and sagging skin after the surgery.  I do not see any reason not to have and additional external skin removal !!.  Get a second opinion from an oculoplastic surgeon 

Transconjunctival blepharoplasty has the advantage of hiding the incision in the conjunctival tissue behind the eyelid. Some surgeons use fast-absorbing sutures to close the conjunctiva - and some do not. Patients appear to heal more quickly with this technique. Antibiotic drops may be prescribed to prevent infection. Theoretically this would be a great approach for patients with Ehlers-Danlos Syndrome to avoid skin healing issues. If you do have excess skin, then removal could be done along the lateral crows' feet area. Best wishes.