Cases reported "Cataract"

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21/515. Traumatic cataract presenting with unilateral nasal hemianopsia.

    A 56-year-old man developed a nasal field defect in his left eye 3 months after a traumatic accident. An examination showed a posterior subcapsular cataract in the left eye with no neurologic deficits. Humphrey 24-2 visual field testing revealed a nasal hemianopsia in the left eye. After cataract extraction and intraocular lens implantation, the patient's visual field returned to normal. This case shows that a cataract can present with a localized visual field deficit, which may be corrected by cataract extraction.
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ranking = 1
keywords = capsular, ocular
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22/515. The relationship between stereopsis and monocular optokinetic optokinetic nystagmus after infantile cataracts.

    PURPOSE: Visual deprivation disrupting binocular development, such as that occurring with congenital cataract, is reported to cause asymmetric monocular optokinetic nystagmus (MOKN), as well as poor sensory and motorfusional outcome. We wanted to determine if symmetric MOKN could develop in cases of congenital cataract with good fusional outcome. methods: We tested MOKN (with video and electro-oculographic recordings) and stereoacuity on 5 patients with good visual acuity and satisfactory ocular alignment after surgery for congenital cataract. RESULTS: Stereoacuity was better than 50 seconds of arc in 1 case of monocular cataract and 2 cases of bilateral cataract. These case patients had symmetric MOKN. In a monocular cataract case, symmetric MOKN was observed in spite of questionable stereoacuity (at least 500 arc/s). One patient showed asymmetric MOKN, despite good visual acuity, and stereoacuity of 200 arc/s. CONCLUSIONS: patients with congenital cataract can have symmetric MOKN and good stereopsis. These cases suggest that MOKN symmetry develops along with good stereopsis, but the quality of stereopsis necessary for development of MOKN symmetry remains unclear.
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ranking = 0.64103997365719
keywords = ocular
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23/515. Selective B-wave reduction with congenital cataract in neurofibromatosis-2.

    OBJECTIVE: To electroretinographically evaluate a case of neurofibromatosis-2 (NF-2). DESIGN: Case report and literature review. PARTICIPANT: A 29-year-old man diagnosed with NF-2. MAIN OUTCOME MEASURES: electroretinography (ERG), ophthalmic biomicroscopy, and ultrasound examination results were reviewed. RESULTS: The ERG of one eye showed selective reduction of b-wave amplitudes. A characteristic posterior subcapsular lens opacity also was observed in that eye. A dense white congenital cataract and a retinal detachment were detected in the fellow eye. CONCLUSIONS: An inner retinal dysfunction, as evidenced by an abnormal ERG, may occur in NF-2. Further ERG evaluation of other patients with NF-2 is indicated to determine possible associations between NF-2 and selective b-wave reduction.
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ranking = 0.92877333626031
keywords = capsular
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24/515. Traumatic subconjunctival dislocation of the crystalline lens and its surgical management.

    The authors report a case of a 40-year-old female who had sustained a blunt ocular trauma resulting in anterior scleral rupture and subconjunctival dislocation of the crystalline lens. Anterior segment ultrasound aided in the diagnosis. Surgical exploration revealed a 6 mm long anterior scleral rupture which was repaired. Postoperatively the patient had a best corrected visual acuity of 6/18.
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ranking = 0.073313408131686
keywords = ocular, rupture
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25/515. Production of anterior segment ischemia.

    Anterior segment ischemia changes can occur without detachment of any muscles. The most common cause of such ischemic changes of the anterior segment is the removal of too many rectus muscles in one operation. Twenty dog eyes and eight monkey eyes were subjected to the disinsertion and detachment of various combinations of extraocular muscles. They were sacrificed at intervals from 30 to 90 days. During the observation period, they were observed for gross and slit lamp changes. The enucleated eyes were studied microscopically for signs of ischemic and necrotic changes. Two patients who were studied, observed, and treated for anterior segment ischemia following muscle surgery are described. The changes which occur after muscle surgery are extensive and include corneal edema, cataract, chemosis, corneal changes, decreases in intraocular pressure, decreases in outflow or glaucoma and frank necrosis. The variables which lead to this reaction is described in detail. Also, some unanswered queries, such as the duration of the reaction and the time interval of the reaction after multiple muscle surgeries, are discussed.
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ranking = 0.14245332747938
keywords = ocular
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26/515. Neonatal asteroid hyalosis.

    Asteroid hyalosis, noted in 0.83% of routine eye examinations, is uncommon in younger patients and is more frequently seen in patients more than 60 years old. It has been considered to be related to an aging process, and when it occurs in younger patients, ocular disease is typically associated. We report a 4-week-old patient with down syndrome and bilateral congenital cataracts who had unilateral asteroid hyalosis.
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ranking = 0.071226663739688
keywords = ocular
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27/515. eye injuries associated with paintball guns.

    AIMS: This study identifies the various types of ocular injuries sustained after blunt trauma with a paintball fired from a paintball gun. methods: We report two patients who sustained injury to an eye after being shot with a paintball and review similar cases presented in the world literature. The type of injury sustained and the final visual acuity obtained after a paintball hit to the eye are examined. RESULTS: The two boys presented were hit in the eye with a paintball resulting in lens subluxation, hyphema formation, and angle recession. cataract extraction was required in both cases. One boy also had an optic neuropathy and a choroidal rupture. A review of the literature reveals a variety of injuries occur after a paintball hit to the eye. In some of the cases, the damage to the eye has led to loss of vision and at times loss of the eye. CONCLUSIONS: Paintball guns can cause devastating ocular injuries. Wearing protective eye and face gear during this game is essential. We recommend that an anti-fog face mask with a one-piece polycarbonate eye shield be worn by those participating in paintball games.
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ranking = 0.14349669967538
keywords = ocular, rupture
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28/515. Cataract induced by short-term administration of large doses of busulfan: a case report.

    busulfan is a carcinostatic which is used for myelocytic leukemia. A 42-year-old Japanese woman given high doses of busulfan for a short time was referred to us because of decreased visual acuity and blurred vision in both eyes. She received 212 mg/day of busulfan for only 4 days. Ophthalmoscopic examination demonstrated a posterior polar subcapsular opacity of the lens in both eyes. Although the occurrence of cataract due to busulfan has been reported after long-term administration of busulfan, this is the first clinical case of cataract caused by high doses of busulfan for a short period. It is necessary to pay more attention to busulfan cataract. copyright copyright 1999 S.Karger AG, Basel
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ranking = 0.92877333626031
keywords = capsular
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29/515. Implantation of a toric poly(methyl methacrylate) intraocular lens to correct high astigmatism.

    A 57-year-old man experienced a decrease in visual function because of cataract formation. Corneal astigmatism was 13.4 diopters (D) because he had had a penetrating keratoplasty 27 years before. Cataract surgery was planned, and biometric data for toric intraocular lens (IOL) implantation were collected for the manufacture of a custom IOL. After phacoemulsification, a toric poly(methyl methacrylate) (PMMA) IOL of 19.0 D spherical and 12.0 D cylindrical power was implanted via a sclerocorneal tunnel incision. Three months postoperatively, corneal astigmatism was 14.3 D and best corrected visual acuity (BCVA), 20/25. Postoperative refraction ( 1.5 -3.0 x 90) and BCVA remained stable for 7 months. No significant IOL rotation was observed. Implantation of a toric PMMA IOL corrected high corneal astigmatism. Toric IOL technology with high cylindrical power allows enhancement of IOL surgery.
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ranking = 0.35613331869844
keywords = ocular
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30/515. Piggyback posterior chamber multifocal intraocular lenses in anisometropia.

    A 63-year-old white man with anisometropic hyperopia presented with cataract in both eyes. He had uneventful temporal limbal phacoemulsification with intracapsular placement of a multifocal 3-piece silicone intraocular lens (IOL) in his right eye (model SA-40N, Allergan, Inc.). One week later, 2 intracapsular 3-piece silicone IOLs (1 monofocal backward, Allergan model SI-40NB; 1 multifocal in front, Allergan model SA-40N) were implanted in his left eye. At 8 days postoperatively, uncorrected visual acuity was 20/20 for distance and J1 for near vision in the right eye and 20/30 and J2, respectively, in the left. These values remained constant until the patient was seen 7 months postoperatively. Power calculation and insertion order of the piggyback IOLs were considered.
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ranking = 2.2136799912191
keywords = capsular, ocular
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