![]() ![]() Once the eyes are inflated to a normal pressure using silicone oil injected in the vitreous cavity, they can be used to simulate any type of strabismus surgery (Figure 4). These preservation techniques retain the elasticity of the conjunctiva and extraocular muscles, unlikely the formalin preparations. Both eyes sit in a mounting cup, which is placed in a model head.Ģ) Cadaver material – Freshly defrosted cadaver material (stored at -18 ☌) or lightly embalmed cadaver material (popularised by Jim Innes in Hull) is perhaps the gold standard material for strabismus surgery simulation. The inferior oblique tendon is more cord-like as it is in life (Figure 3). The superior oblique tendon is made from a thin stretchy material that has a wide insertion under the superior rectus as in life. The rectus muscles are the same dimensions and have a similar feel to a needle pass as real rectus muscles.ī) The advanced eyes (Figure 2) have the same scleral shell and rectus muscles, but they also have a layer of conjunctiva, with similar elastic properties of human conjunctiva, a layer of Tenon’s capsule and a superior or an inferior oblique muscle. The globe is hollow, the sclera which is 0.5m thick, has been made out of a material that has the same resistance to a needle pass as human sclera and has a similar tensile strength, so sutures will not cut out of the sclera. It has four rectus muscles but has no oblique muscles. Simulation materialġ) Model eyes – There are two types of simulated ocular surgery strabismus (SOS) eyes designed by Philips Studio:Ī) The basic strabismus eye (Figure 1) has no conjunctiva nor Tenon’s capsule. The aim of this article is to describe strategies for teaching different types of strabismus surgery using model eyes and / or cadaver material. ![]() They will also enhance a surgeon’s ability to mange complex penetrating eye injuries, which may involve the sclera and extraocular muscles. ![]() Even if a trainee does not plan to become a strabismus surgeon the tissue handling, dissection and scleral and rectus muscle suturing skills, which are integral to strabismus surgery, will benefit the budding glaucoma, vitreoretinal and oculoplastic surgeon. Strabismus surgery requires a range of skills, distinct to those required for intraocular surgery. See also Simulated ocular surgery and Simulated ocular surgery: pars plane vitrectomy and scleral buckling surgery ![]()
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