After this surgical lab, the resident/student will be able to:
- Understand the physics of corneal wound/incision closure
- Create and close linear and stellate corneal incisions
Procedure
1. Inject some BSS into the anterior chamber of the pig/goat eye to reform the anterior chamber to physiologic turgor
2. Use a blade to create a linear partial thickness incision in the cornea
3. Close this incision with 10-0 nylon sutures in an interrupted fashion
4. Repeat process with a full thickness linear incision as well as a stellate (Mercedes sign) full thickness incision
5. Reform the anterior chamber with BSS to confirm that wound is free of leakage
Materials
· Pig/goat eyes
· Supersharp blades
· Viscoelastic
· BSS
· Fine non-locking needle holders
· 10-0 nylon suture
· Colibri or straight 0.12 or 0.3 forceps
· Vannas scissors
· Tying forceps
Preparation
Please read the following:
1. Macsai chapter on physics of wound closure (all)
2. Macsai chapter on trauma suturing (all)
3. Krachmer section on corneal laceration repair (all)
