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J.J. Nassaralla, B.A. Nassaralla; Vitreoretinal Alterations Following LASIK: Clinical Study . Invest. Ophthalmol. Vis. Sci. 2003;44(13):2969.
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Purpose:To evaluate the presence of vitreoretinal changes following myopic laser in situ Keratomileusis (LASIK). Methods:240 myopic eyes of 120 patients were prospectively evaluated before and 30 days after LASIK, in order to identify the presence of newly recognized entopic phenomena (vitreous floaters, light flashes or both) or vitreoretinal changes using, indirect depressed fundus examination, with +90 D preset lens, Goldman three-mirror contact lens, and ultrasound. According to the preoperative spherical equivalent (SE) the eyes were divided into 3 groups: Group 1(G1) 80 eyes with SE (<-4.00 D), Group 2 (G2) 80 eyes with SE from -4.00D to -8.00D, and Group 3 (G3) 80 eyes with SE > -8.00 D. Patients with previous partial or total posterior vitreous cortex detachment (PVD) were excluded. Results:Positive perception of postoperative vitreous floaters was found in 8 eyes (10%) from G1, 24 eyes (30%) from G2 and 40 eyes (50%) from G3. Light flashes were noted only in 2 eyes (2.5%) from G2 and 12 eyes (15%) from G3. Partial or total posterior vitreous cortex detachment was detected by biomicroscopy in 2 eyes (2,5%) from G1, 5 eyes (6.25%) from G2 and 15 eyes (18.75%) from G3 and by ultrasound, in 2 eyes (4%) from G1 and in 24 eyes (30%) from G3. Conclusions:Vitreoretinal changes after LASIK were clinically found mainly by ultrasound in the high myopic patients.
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