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P Kroll

Publications and source records attributed to P Kroll.

151 records · Page 9Linked to original sources
PubMed1975

[Results with automatic refraction (author's transl)].

Hundred eyes of young patients with an average age of 25 years were measured with two refraction methods: 1. subjectiv refraction and 2. automatic refraction with the "Dioptron". The results of refraction and visual acuity before and after cycloplegia were compared. As for the spherical aquivalents we found a very good correlation between both methods (r - 0,98). The "Dioptron" printed out stronger cylindric powers as were found with the subjectiv refraction. Furthermore it could be shown that the stronger the cylindric power the smaller the axial deviation between subjectiv and automatic refraction. We believe that the automatic refraction with "Dioptron" is a good screening method, which cannot replace fine subjective adjustments, but complements them by serving as a good starting point for the refractive procedure.

Adolescent↗
PubMedDate not supplied

[Retinal necrosis after blunt bulbus trauma].

BACKGROUND: Acute retinal necrosis is a rare complication of blunt eye injury. We report about a patient with this type of retinal break. PATIENT: A 20-year-old male was referred to our hospital after a blunt injury of his left eye due to a ball. Visual acuity was 1.0 and the anterior segment was completely normal. A large retinal necrosis surrounded by a Berlin edema was present in the upper temporal part of the globe. A partial retinal detachment was present. The retina reattached within two weeks without further treatment and a characteristic granular hyperpigmentation developed. The edge of the retinal break was treated by photocaogulation. CONCLUSION: The affected patient was young and had a solid vitreous, providing internal tamponade of the retina in spite of a large retinal break. In these patients, the clinical course of an acute retinal necrosis after blunt injury should be waited for. However, a retinal detachment that persists after retinal edema disappeared is caused by pathologic vitreous changes and requires surgical treatment.

Adult↗
PubMedDate not supplied

Central retinal vein occlusion and nonarteritic ischemic optic neuropathy in 2 patients with mild iron deficiency anemia.

We report on 2 patients with ophthalmologic complications associated with mild iron deficiency anemia. Case 1, a 37-year-old female patient, presented after 4 days of blurred vision in her left eye. Ophthalmoscopic and angiographic findings were consistent with the diagnosis of central retinal vein occlusion (CRVO). Further hematologic investigation into possible causes disclosed mild iron deficiency anemia (Hb 9.4 g/dl, hematocrit 30.5%). After the patient's visual acuity had worsened progressively to 20/50, an initial thrombolytic treatment and continuous intravenous heparinization was started on day 8, followed by oral substitution therapy with ferrous sulfate. On day 14, her visual acuity recovered to 20/20 OS and remained stable during follow-up. Case 2, a 50-year-old female patient, presented with a 1-week-history of blurred vision and metamorphopsia. Her visual acuity was 20/200. Further examination revealed a nonarteritic ischemic optic neuropathy and an iron deficiency anemia as the underlying disease (Hb 7.3 g/dl, hematocrit 25%). Despite intravenous heparinization and systemic treatment with steroids, there was no improvement in visual acuity. Clinicians involved in the management of chronic iron deficiency anemia should be aware of possible ophthalmic manifestations in this disease.

Adult↗
PubMedDate not supplied

Primary vitrectomy in complicated rhegmatogenous retinal detachment--a survey of 205 eyes.

INTRODUCTION: In a few types of rhegmatogenous retinal detachment (RRD), scleral buckling (SB) has a lower success, and, here, pars plana vitrectomy (PPV) is a good alternative option. This survey reviews the indications and the surgical outcome of primary PPV with internal tamponade. PATIENTS AND METHODS: We reviewed 205 eyes operated by primary PPV for RRD at the Department of Ophthalmology of the Philipps University Marburg between the years 1990 and 1997. The indications of PPV were: holes greater than 90 degrees; holes posterior to the equator; proliferative vitreoretinopathy grade C; pseudophakic status. RESULTS: A complete reattachment of the retina after absorption of the gas or after silicone oil removal was achieved by 1 operation in 146 eyes (71.2%) and in 195 eyes (95.2%) by a second intervention. CONCLUSION: Although SB is the standard procedure for the treatment of RRD, complicated cases can be treated successfully with primary PPV.

Adolescent↗
PubMedDate not supplied

Successful treatment of acute subretinal hemorrhage in age-related macular degeneration by combined intravitreal injection of recombinant tissue plasminogen activator and gas.

Subretinal hemorrhage secondary to age-related macular degeneration (AMD) has a poor visual prognosis. Surgical drainage of the blood improves visual acuity only in selected patients. We report on two elderly patients with spontaneous subretinal hemorrhage from AMD. In one eye, recombinant tissue plasminogen activator (rTPA), combined with a long-acting gas (SF6), was injected into the vitreous cavity. The other eye was treated first by gas instillation followed 3 days later by rTPA injection. Both treatments led to nearly complete displacement of the subretinal hemorrhage from the macular region. In both eyes, an inferior exudative retinal detachment reabsorbed spontaneously within 2 weeks. Bilateral vitreous opacities after rTPA injection resolved without further treatment. Postoperative visual acuity increased to 0.3 and 0.4. The combined treatment is a valuable method for management of acute subretinal hemorrhage. Rapid displacement of this abnormality can minimize clot-induced damage of the highly sensitive macula and increase visual acuity.

Aged↗