The use of the femtosecond laser causes an increase in the intraocular pressure (IOP) between 100 mm Hg and 200 mm Hg for a period of about 80 seconds (suction phase). If it is known that elevated IOP accelerates the degradation of retinal ganglion cells, whose axons form the optic nerve. No data has been published to date on potential adverse effects of femtolaser cataract surgery performed in patients with glaucomatous optic neuropathy. Since some time, spectral-domain optical coherence tomography (SD -OCT) provides a detailed analysis of ganglion cell complex (GCC) for which the loss is a marker of glaucomatous optic neuropathy. The resolution of this device, about a few microns, can detect even a tiny loss of this layer. The investigators propose to evaluate the effects of elevated intraocular pressure in glaucoma patients undergoing femtolaser cataract surgery, studying the GCC through SD-OCT.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
15
Fondation ophtalmique Adolphe de Rothschild
Paris, France
In patient with glaucoma, measure of the thickness of the ganglion cell complex in the operated eye with femtosecond laser versus the operated eye with phacoemulsification.
Time frame: within the first 3 months after surgery
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