Joji Takenaka

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PURPOSE To report a case of subretinal neovascularization associated with retinochoroidal coloboma. METHODS AND RESULTS A 44-year-old female presented with metamorphopsia in her right eye for 4 weeks. Funduscopic examination revealed bilateral inferior retinochoroidal coloboma. Fluorescein angiography disclosed foci of subretinal neovascularization at the(More)
Failure of surgery for glaucoma is usually due to post-surgical scarring (fibrosis), a process in which fibroblasts play a prominent role. We investigated the molecular mechanisms of such scarring by examining the expression of matrix metalloproteinases and cytokines in Tenon fibroblasts isolated from rats after glaucoma surgery. Filtration surgery was(More)
PURPOSE To determine the prevalence of plateau iris configurations in acute primary angle-closure (APAC), chronic angle-closure glaucoma (CACG), and open-angle glaucoma (OAG) eyes using ultrasound biomicroscopy. MATERIALS AND METHODS The study included fellow eyes of 27 APAC patients, 26 OAG patients, and 26 CACG patients with no history of APAC. Patients(More)
PURPOSE We investigated the extent of corneal displacement and factors associated with the measurement of IOP during the early and late phases of noncontact tonometry. METHODS One eye in each of 61 healthy volunteers was studied. In each case, the cornea was photographed in profile using a high-speed camera during noncontact tonometry. The extent of(More)
PURPOSE To investigate the influence of positional deviations on rebound tonometer measurement of intraocular pressure in humans. MATERIALS AND METHODS Intraocular pressure was measured using the Icare rebound tonometer on the right eyes of 53 subjects in various conditions as follows: first, at a distance of 4, 6, or 8 mm from the center of the cornea(More)
PURPOSE To investigate the influence of positional deviations on the rebound tonometer measurement. MATERIALS AND METHODS Ten white rabbits were used. A bottle of balanced salt solution was connected to the anterior chamber, and the IOP was altered by changing the height of the bottle. A pressure transducer was also connected to the anterior chamber. The(More)
To measure the extent of corneal displacement during the early phase of tonometry using a noncontact tonometer and to determine the factors that affect the extent of the displacement. The cornea was photographed in profile by use of a high-speed camera during tonometry with a noncontact tonometer. The frame rate of the camera was 5,000 frames/s. The extent(More)
PURPOSE To evaluate the displacement of the central ocular surface during non-contact tonometry with and without soft contact lenses and determine the factors associated with the displacement of the central ocular surface and intraocular pressure (IOP) reading changes caused by wearing soft contact lenses (CLs). METHODS One eye each in 21 subjects was(More)
PURPOSE To compare the reliability and accuracy of intraocular pressure (IOP) measured while wearing soft contact lenses (SCLs) using a non-contact tonometer (NCT), Goldmann applanation tonometer (GAT), iCare rebound tonometer (RBT) and the Tono-Pen XL. METHODS Twenty-six healthy subjects were examined. The IOP was measured using NCT, GAT, RBT, and the(More)