Clear Lens Extraction for the Correction of High Myopia

Clear lens extraction and implantation of posterior chamber intraocular lens was performed on 12 eyes(7 patients) to correct high myopia. Average preoperative refractive error(spherical equivalent) was -19.08D with a range of -13.00D to -31.00D. 7 eyes(58.3%) achieved 0.5 or better uncorrected postoperative visual acuity and all eyes achieved 0.5 or better corrected visual acuity. In postoperative refractive errors, 4 eyes(33.3%) were 1.0D of emmetropia and 8 eyes(66.6%) were within 2.0D. In conclusion, clear lens extraction and posterior chamber intraocular lens implantation is a more favorable technique for correcting high myopia, but further study for complications such as retinal detachment, cystoid macular edema, and posterior capsular opacity and for precise results is needed.

Visual Improvement following Acute Obstruction of the Retinal and Choroidal Blood Flows

The prognosis for useful vision after central retinal artery obstruction is generally considered poor, except in those cases with a patent cilioretinal artery. When the choroidal circulation is affected as well in the form of an ophthalmic artery obstruction, characteristically the visual loss is more severe and the retinal whitening is more intense and, the cherry-red spot may be present. We report a patient with partial visual improvement following acute obstruction of the retinal and choroidal circulations more than three hours.

Outflow of Aqueous Humor Following Cyclodialysis or Ciliochoroidal Detachment in Rabbit

Cyclodialysis and ciliochoroidal detachment was performed in one eye of three rabbits and in one eye of another three rabbits respectively. 0.1 ml of 10% sodium fluorescein was injected intracamerally after aspiration of aqueous humor and the eyeball was enucleated between 30 minutes and one hour after sodium fluorescein injection and prepared for fluorescence microscopy. Sodium fluorescein concentration in supraciliary space was much greater in group with cyclodialysis or ciliochoroidal detachment than in normal control group. These results suggest that in the eye with cyclodialysis, aqueous humor may gain access freely to supraciliary space through the cleft between anterior chamber and supraciliary space and then is removed rapidly and in the eye with ciliochoroidal detachment, aqueous humor may pass through uveoscleral outflow pathway.

Outflow of aqueous humor following cyclodialysis or ciliochoroidal detachment in rabbit

Cyclodialysis and ciliochoroidal detachment were performed in three eyes of three rabbits and in three eyes of another three rabbits, respectively. After aspiration of the aqueous humor, 0.1 ml of 10% sodium fluorescein was injected intracamerally, and the eyeball was enucleated between 30 minutes and one hour after injection and prepared for fluorescence microscopy. Sodium fluorescein concentrations in the supraciliary space were much greater in the group with cyclodialysis or ciliochoroidal detachment than in the normal control group. These results suggest that (1) in the eye with cyclodialysis, the aqueous humor may freely gain access to the supraciliary space through the cleft between the anterior chamber and the supraciliary space and then be removed rapidly and (2) in the eye with ciliochoroidal detachment, the aqueous humor may pass through the uveoscleral outflow pathway.

A Case of Posterior Scleritis Associated with Relapsing Polychondritis

A 68-year-old female was referred to our ophthalmologic department due to pain, redness and decreased vision of the left eye. She had saddle nose deformity and erythematous swelling and deformity on right anricle. Both eyes represented recurring conjunctival injection and chemosis, episcleral injection, and anterior uveitis on follow-up examinations. Left eye showed proptosis and limitation of eyeball movement with acute increase of IOP. The fluorescein angiography showed the choroidal folds which were seen as alternating lines of hyper- and hypofluorescence. B-scan ultrasonograms showed thickening of posterior coats of eye and retrobulbar edema, which seemed to be critical in the diagnosis of the posterior scleritis.

A Case of Posterior Scleritis Associated with Relapsing Polychondritis

A 68-year-old female was referred to our ophthalmologic department due to pain, redness and decreased vision of the left eye. She had saddle nose deformity and erythematous swelling and deformity on right anricle. Both eyes represented recurring conjunctival injection and chemosis, episcleral injection, and anterior uveitis on follow-up examinations. Left eye showed proptosis and limitation of eyeball movement with acute increase of IOP. The fluorescein angiography showed the choroidal folds which were seen as alternating lines of hyper- and hypofluorescence. B-scan ultrasonograms showed thickening of posterior coats of eye and retrobulbar edema, which seemed to be critical in the diagnosis of the posterior scleritis.

Ultrastructure of Langerhans Cell and Expression of HLA-DR Antigen in Normal Limbal Conjunctiva

We have observed the ultrastructures of Langerhans cell in the normal limbal eonjunctiva by electron microscopy and expression of HLA-DR antigen by peroxidase-antiperoxidase(PAP) method in the normal limbal conjunctiva. In electron microscope, Langerhans cell had no junctional complex like desmosome, irregular and invaginated nucleus, and characteristic Birbeck granlues in the cytoplasm. In PAP method, HLA-DR-positive cells were found in basal or suprabasal layer of conjunctival epithelium as dendritic form.

T Cell, B Cell and T Cell Subpopulations(OKT4, OKT8) in Uveitis

Both clinical and experimental evidence suggest that immunological mechanisms are involved in the pathogenesis of endogenous uveitis. We have analyzed the percentages of T cell, B cell, T cell subpopulations(OKT4, OKT8) and OKT4/OKT8 a in seventeen patients diagnosed clinically as uveitis. The results were as follows; 1. The percentages of T cell and B cell in peripheral blood were 53.0% and 21.1% respectively. 2. The percentages of OKT4 and OKT8 and OKT4/OKT8 were 49.4%, 29.0% and 2.0 respectively, and those were in normal ranges.