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J F Arevalo

Publications and source records attributed to J F Arevalo.

At least 19 recordsLinked to original sources
PubMed2005

Vitreoretinal surgery for macular hole after laser assisted in situ keratomileusis for the correction of myopia.

UNLABELLED: AMS: To describe the characteristics and surgical outcomes of full thickness macular hole surgery after laser assisted in situ keratomileusis (LASIK) for the correction of myopia. METHODS: 13 patients (14 eyes) who developed a macular hole after bilateral LASIK for the correction of myopia participated in the study. RESULTS: Macular hole formed 1-83 months after LASIK (mean 13 months). 11 out of 13 (84.6%) patients were female. Mean age was 45.5 years old (25-65). All eyes were myopic (range -0.50 to -19.75 dioptres (D); mean -8.4 D). Posterior vitreous detachment (PVD) was not present before and was documented after LASIK on 42.8% of eyes. Most macular hole were unilateral, stage 4 macular hole, had no yellow deposits on the retinal pigment epithelium, had no associated epiretinal membrane, were centric, and had subretinal fluid. The mean diameter of the hole was 385.3 microm (range 200--750 microm). A vitrectomy closed the macular hole on all eyes with an improvement on final best corrected visual acuity (VA) on 13 out of 14 (92.8%) patients. CONCLUSIONS: This study shows that vitreoretinal surgery can be successful in restoring vision for most myopic eyes with a macular hole after LASIK.

Adult↗
PubMed2001

Rhegmatogenous retinal detachment in myopic eyes after laser in situ keratomileusis. Frequency, characteristics, and mechanism.

PURPOSE: To report the characteristics and frequency of rhegmatogenous retinal detachment (RRD) after laser in situ keratomileusis (LASIK) for the correction of myopia in a large case series. SETTING: Private practices, Caracas, Venezuela. METHODS: Five refractive surgeons and 31 739 myopic eyes that had surgical correction of a mean myopia of -6.01 diopters (D) (range -0.75 to -29.00 D) participated in this study. Laser in situ keratomileusis was performed in all eyes. Patients were followed for a mean of 36 months (range 6 to 48 months). The clinical charts of patients who developed RRD after LASIK were reviewed. RESULTS: Twenty eyes (17 patients) developed RRD after LASIK. Rhegmatogenous retinal detachments occurred a mean of 13.9 months (range 1 to 36 months) after LASIK. The mean pre-LASIK myopia in eyes that developed an RRD was -7.02 D (range -1.50 to -16.00 D). Most RRDs and retinal breaks occurred in the temporal quadrants (71.4%). Rhegmatogenous retinal detachments were managed with vitrectomy, cryoretinopexy, scleral buckling, argon laser retinopexy, or pneumatic retinopexy techniques. The frequency of RRD after LASIK was 0.06%. CONCLUSIONS: Rhegmatogenous retinal detachment after LASIK for the correction of myopia is infrequent. If managed promptly, RRD will result in good vision. Before LASIK is performed, patients should have a thorough dilated indirect fundoscopy with scleral depression and treatment of any retinal lesion predisposing to the development of an RRD.

Adolescent↗
PubMed2000

Circumscribed choroidal hemangioma: characteristic features with indocyanine green videoangiography.

OBJECTIVE: To determine the characteristic features of indocyanine green videoangiography (ICG-V) of circumscribed choroidal hemangioma. DESIGN: Prospective, observational case series. PARTICIPANTS: Twenty-five eyes of 25 consecutive patients with circumscribed choroidal hemangioma. INTERVENTION: Indocyanine green videoangiography and intravenous fluorescein angiography (IVFA) were prospectively performed and reviewed. The specific features on ICG-V were compared with features of IVFA. MAIN OUTCOME MEASURES: The behavior of circumscribed choroidal hemangioma cases was observed with ICG-V and IVFA. RESULTS: On ICG-V, earliest hyperfluorescence of circumscribed choroidal hemangioma was achieved at a mean of 27.6 seconds (range, 13-62 seconds), whereas maximum hyperfluorescence occurred at 222 seconds (range, 33-707 seconds). In the late frames, all eyes demonstrated a relative decrease in fluorescence, including 18 eyes (72%) that demonstrated "washout" of the dye. Other findings on ICG-V included intrinsic vessels in 19 eyes (76%), a late hyperfluorescent rim in 19 eyes (76%), and late frame hot spots in 14 eyes (56%). On IVFA, the earliest hyperfluorescence was achieved at a mean of 24 seconds (range, 10-66 seconds), whereas maximum hyperfluorescence occurred at a mean of 76.3 seconds (range, 21-720 seconds). Increasing hyperfluorescence in the late frames was found in all cases. Other findings included intrinsic vessels in 12 eyes (48%) and hot spots in the late frames in 9 eyes (36%). CONCLUSIONS: Circumscribed choroidal hemangioma have specific characteristics on ICG-V that are not visualized with IVFA. We believe that ICG-V may become an important noninvasive tool for the diagnosis of choroidal hemangioma.

Choroid Neoplasms↗
PubMed2000

Incidence of vitreoretinal pathologic conditions within 24 months after laser in situ keratomileusis.

OBJECTIVE: To report for the first time a case series of vitreoretinal pathologic conditions after laser in situ keratomileusis (LASIK) and to determine its incidence. DESIGN: Case series. PARTICIPANTS: Five refractive surgeons and 29,916 eyes that underwent surgical correction of ametropia (83.2% were myopic) ranging from -0.75 to -29.00 diopters (D; mean: -6.19 D) and from +1.00 to +6.00 D (mean: +3.23 D) participated in this retrospective study. MAIN OUTCOME MEASURES: Vitreoretinal complications after LASIK. RESULTS: The clinical findings of 20 eyes (17 patients) with LASIK-related vitreoretinal pathologic conditions are presented. Fourteen eyes experienced rhegmatogenous retinal detachments (RDs). Two eyes experienced corneoscleral perforations with the surgical microkeratome when a corneal flap was being performed (one experienced a vitreous hemorrhage and the other later experienced an RD). In four eyes, retinal tears without RDs were found. In one eye, a juxtafoveal choroidal neovascular membrane (CNVM) developed. Retinal tears were treated with argon laser retinopexy or cryotherapy. Corneoscleral perforations were sutured, and the RD was managed with vitrectomy. The remaining RDs were managed with vitrectomy, cryoretinopexy, scleral buckling, argon laser retinopexy, or pneumatic retinopexy techniques. The CNVM was surgically removed. The incidence of vitreoretinal pathologic conditions determined in our study was 0.06%. CONCLUSIONS: Serious complications after LASIK are infrequent. Vitreoretinal pathologic conditions, if managed promptly, will still result in good vision. It is very important to inform patients that LASIK only corrects the refractive aspect of myopia. Complications of the myopic eye will persist.

Adolescent↗
PubMed2000

Topical anesthesia in posterior vitrectomy.

PURPOSE: To evaluate the efficacy of topical anesthesia as an alternative to peribulbar or retrobulbar anesthesia in posterior vitrectomy procedures. METHODS: Posterior vitrectomy using topical anesthesia (4% lidocaine drops) was performed prospectively in 134 eyes (134 patients) with various vitreoretinal diseases, including severe proliferative diabetic retinopathy (n = 69), vitreous hemorrhage (n = 12), rhegmatogenous retinal detachments (n = 11), epiretinal membranes (n = 10), macular holes (n = 7), dislocated crystalline lens or intraocular lens (n = 6), giant retinal tears (n = 5), intraocular foreign bodies (n = 3), trauma (n = 3), endophthalmitis (n = 3), subfoveal choroidal neovascular membrane (n = 3), and neovascular glaucoma (n = 2). In 26 (19.4%) eyes, posterior vitrectomy was combined with a scleral buckling procedure, and in 84 (62.6%) eyes, argon laser photocoagulation was performed. Preoperative and intraoperative sedation of varying degrees was necessary. Subjective pain and discomfort were graded from 1 (no pain or discomfort) to 4 (severe pain and discomfort). RESULTS: All patients had grade 1 pain and discomfort during most of the procedure. All patients had grade 2 (mild) pain and discomfort during pars plana sclerotomies, external bipolar cautery, and conjunctival closure. The average amount of 4% lidocaine drops needed during each procedure was 0.5 mL. No patient required additional retrobulbar, peribulbar, or sub-Tenon anesthesia. CONCLUSIONS: This technique avoids the risk of globe perforation, retrobulbar hemorrhage, and prolonged postoperative akinesia of the eye. With appropriate case selection, topical anesthesia is a safe and effective alternative to peribulbar or retrobulbar anesthesia in three-port pars plana vitrectomy procedures.

Adult↗
PubMed2000

Rhegmatogenous retinal detachment after laser-assisted in situ keratomileusis (LASIK) for the correction of myopia.

PURPOSE: To report a case series of rhegmatogenous retinal detachment (RRD) after laser-assisted in situ keratomileusis (LASIK) and its incidence at a mean of 24 months. METHODS: The clinical charts of patients who experienced RRD after LASIK were reviewed. Five refractive surgeons and 24,890 myopic eyes that underwent surgical correction of myopia ranging from -0.75 to -29.00 diopters (D) (mean, -6.19 D) participated in this study. RESULTS: Thirteen eyes from 12 patients developed RRD after LASIK. Rhegmatogenous RD occurred between 1 and 36 months (mean, 12.6 months) after LASIK. Eyes that developed RRD had from -1.50 to -16.00 D of myopia (mean, -6.96 D) before LASIK. Rhegmatogenous RD were managed with vitrectomy, cryoretinopexy, scleral buckling, argon laser retinopexy, or pneumatic retinopexy techniques. The incidence of RRD at a mean of 24 months after LASIK in this study was 0.05%. CONCLUSIONS: Rhegmatogenous RD after LASIK is infrequent. If managed promptly, good vision can result. No cause-effect relationship between LASIK and RD can be proved from this study, but the authors recommend that patients scheduled for refractive surgery undergo a thorough dilated indirect fundus examination with scleral depression and treatment of any retinal lesions predisposing them to the development of RRD before LASIK surgery is performed.

Adolescent↗
PubMed1999

Choroidal melanoma with oculodermal melanocytosis in Hispanic patients.

PURPOSE: To describe three Hispanic patients with oculodermal melanocytosis and uveal melanoma. METHOD: Case series. RESULTS: Three Hispanic patients with oculodermal melanocytosis and uveal melanoma underwent enucleation. The diagnosis of choroidal melanoma was confirmed by histopathologic examination. CONCLUSION: In the Hispanic population, uveal melanoma can occur in the presence of oculodermal melanocytosis.

Adult↗
PubMed1999

Optociliary veins in optic nerve sheath meningioma. Indocyanine green videoangiography findings.

OBJECTIVE: To report the indocyanine green videoangiography (ICG-V) characteristics of optociliary veins (OV) in optic nerve sheath meningioma (ONSM). DESIGN: Case series. PARTICIPANTS: Four eyes (patients) with OV and ONSM were examined. INTERVENTION: Indocyanine green videoangiography and intravenous fluorescein angiography (IVFA) were prospectively performed. MAIN OUTCOME MEASURES: The course of OV in ONSM cases was observed with ICG-V and IVFA. RESULTS: On ICG-V, the course of OV was followed from their origin at small tributaries of the central retinal vein, their junction with choroidal veins, and finally to their drainage in the vortex venous system. The authors found an inverse relationship between the degree of optic disc edema and the development and ease of visualization of the optociliary veins and their draining course through the choroidal circulation. The mean time from the injection of indocyanine green to the visualization of OV's draining choroidal vessels was 35.4 seconds (range, 25.4-50 seconds). Intravenous fluorescein angiography allowed visualization of OV only at the margins of the optic disc in all cases. CONCLUSION: Indocyanine green videoangiography provides important and new information in cases with OV and ONSM that is not obtained with IVFA. Such information may provide important knowledge regarding the hemodynamics of the choroidal circulation in normal and pathologic states.

Adult↗