ABSTRACT
Primary malignant lymphomas of the lacrimal sac are rare neoplasms. They are mainly B-cell lymphoma with nonspecific and atypical symptoms, which can lead to misdiagnosis and a delay in the appropriate cure. Early diagnosis made by biopsy and the right choice of treatments can increase the chance of survival. We report a case of a non-Hodgkin diffuse large B-cell lymphoma (DLBCL) of the lacrimal sac, involving also the drainage system, in a 77-year-old female. She presented with an epiphora, swelling and a heavy visual impairment at the left eye successfully treated with cycles of polychemotherapy and radiotherapy.
Subject(s)
Basement Membrane/surgery , Myopia, Degenerative/surgery , Retinal Perforations/surgery , Retinoschisis/surgery , Vitrectomy , Humans , Myopia, Degenerative/diagnosis , Prognosis , Retinal Perforations/diagnosis , Retinoschisis/diagnosis , Risk Factors , Tomography, Optical Coherence , Visual Acuity/physiologySubject(s)
Pseudophakia/surgery , Retinal Detachment/surgery , Retinal Perforations/surgery , Scleral Buckling/methods , Silicone Oils/administration & dosage , Vitrectomy/methods , Combined Modality Therapy , Female , Humans , Intraoperative Complications , Male , Middle Aged , Postoperative Complications , Prone Position , Prospective Studies , Pseudophakia/physiopathology , Retinal Detachment/physiopathology , Retinal Perforations/physiopathology , Time Factors , Treatment Outcome , Visual Acuity/physiologyABSTRACT
PURPOSE: To establish which corneal power evaluation measured with corneal topography correlates best with refractive changes after photorefractive keratectomy (PRK) for myopia. METHODS: Two hundred fifty-one consecutive eyes of 171 patients who had PRK for myopia ranging from -14.80 to -0.50 D (mean -5.43 +/- 2.978 D), calculated at the corneal plane, were included in the analysis. Data included preoperative and postoperative (1, 3, and 6-mo) subjective refraction and videokeratography with a Keratron Scout (Optikon 2000). Statistical analysis was performed to determine the correlation between the change in subjective refraction at the corneal plane and changes in six corneal power measurements: best fit sphere, simulated keratometry (Sim K), corneal apex, and center of the pupil (last two evaluated for axial and meridional curvatures). RESULTS: The closest correlation between subjective refraction change and corneal power measurement during the three follow-up evaluations was found with Sim K (R2 = 0.904; 0.889; 0.854) and best fit sphere (R2 = 0.919; 0.909; 0.872), whereas the other measurements showed poor correlation with the different curvatures. CONCLUSIONS: The best fit sphere corneal topography parameter correlated best with the refractive changes, primarily for low treatment amounts, whereas it showed a clear-cut underestimation in eyes that had undergone high dioptric treatments.
Subject(s)
Corneal Topography , Myopia/physiopathology , Myopia/surgery , Photorefractive Keratectomy , Refraction, Ocular , Adult , Female , Follow-Up Studies , Humans , Lasers, Excimer , Male , Middle Aged , Myopia/diagnosis , Postoperative PeriodABSTRACT
PURPOSE: To test the accuracy of the IOLMaster (Carl Zeiss) in detecting corneal power changes after photorefractive keratectomy (PRK). SETTING: Department of Ophthalmology, 2nd University of Naples, Naples, Italy. METHODS: Two hundred twenty-five consecutive eyes that had PRK (mean -5.13 diopters [D] +/- 2.98 [SD] [range +0.25 to -16.25 D]) were analyzed. The data included preoperative and postoperative (1, 3, and 6 months) subjective refraction and computerized keratometry. Statistical analysis was performed to determine the correlation between the changes in the subjective refraction at the corneal plane and the changes in keratometry. RESULTS: The mean difference between the changes in refraction and the measured corneal changes was 0.75 +/- 1.13 D (range -3.84 to +7.68 D) at 1 month, 0.92 +/- 1.10 D (range -0.87 to +7.93 D) at 3 months, and 0.75 +/- 0.98 D (range -1.70 to +3.85 D) at 6 months. The difference was significant (P<.001). CONCLUSION: Automated keratometry provided by the IOLMaster did not accurately reflect the effective refractive changes after PRK, particularly in eyes that had a high dioptric treatment.
