Although it is well known that ultraviolet and short wavelength visible rays are harmful to the human lens and the retina, consumers still tend to select sunglasses on the basis of fashion rather than protective quality. In order to provide guidelines for selecting appropriate sunglasses, we studied the mechanism of phototoxic damage and UV protective quality of commonly used sunglasses. Commonly used sunglasses were chosen by random sampling, and their UV transmittance was examined by spectrophotometer using neutral density filter method. UV transmittance was shown to be 3.0% to 40.8% and there was no significant relationship between UV transmittance and the tint or darkness of the sunglasses.
Darkness ; Humans ; Retina

Sjogren's syndrome is a systemic disorder and characterized by keratoconjunctivitis sicca, xerostomia, and connective tissuedysfunction(arthritis). A 42 year-old Korean iemalehad progressive loss of visual acuity in both eyes. In addition she has dry eyes, dry mouth and arthritis of 8 years duration. Clinical findings include cornea punctate, filamentary karatitis and decreased lacrimal secretions of both eyes. A diagnosis of Sjogren's syndrome was made. The karatoconjunctivitis siccawas treated with artificial tear and soft contact lens.
Adult ; Arthritis ; Contact Lenses, Hydrophilic ; Cornea ; Diagnosis ; Humans ; Keratoconjunctivitis Sicca ; Mouth ; Sjogren's Syndrome* ; Tears ; Visual Acuity ; Xerostomia

Nowadays endscopic transnasal dacryocystorhinostomy(DCR) has been done popularly in patients who had epiphora chronically because of lacrimal obstruction. The most frequent cause of DCR failure is obstruction of osteotomy site due to formation of granuloma. We used the mitomycin C to suppress proliferation of fibroblast to increase success rate. Between July 1996 and september 1997, 15 patients(16 eyes) who had visited ophthalmology department in Seoul Advantist Hospital made went endoscopic transnasal DCR and packed merocel socked with 0.2mg/ml between 3 months to 18 months(mean 11.5 months). One case showed recurrent epiphora 2 months after surgery, and success rate was 94%. In conclusion, endoscopic transnasal DCR with Mitomycin C should be considered to suppress proliferation of granuloma and increase success rate.
Dacryocystorhinostomy* ; Fibroblasts ; Granuloma ; Humans ; Lacrimal Apparatus Diseases ; Mitomycin* ; Ophthalmology ; Osteotomy ; Seoul

PURPOSE: This study is to know a normal orbital volume of adult Koreans. METHODS: We had taken 3-dimension orbital CT of 100 patients who had visited the department of ophthalmology and emergency room. Among them 30 patients who were reported to show abnormal orbital CT finding were excluded. Thereafter we measured orbital CT volume in eyes of 70 patients. We appointed inner sides of orbital wall in coronal plane image and reconstructed 3-dimension images by means of soft ware program(silhouette) in CT to measure the orbital volume. RESULTS: Average of orbital volume was 24.5 mm 3(left orbital vol. 24.25 mm 3, right 24.75 mm 3), in males and 23.5 mm3(left 23.25 mm 3 , right 23.75 mm 3)in females. Difference between right orbit and left orbit was 2% and average of male orbital volume was bigger than female by 4%. CONCLUSION: Adult Korean orbital volume measure was useful for differential diagnosis in orbital desease.
Adult* ; Diagnosis, Differential ; Emergency Service, Hospital ; Female ; Humans ; Male ; Ophthalmology ; Orbit* ; Reference Values*

Recently, intracameral injection of 1% unperserved lidocaine was intro-duced as a supplement to the topical anesthesia in cataract operations. We evaluated the effect of intracameral lidocaine on the corneal endothelium. One hundred eyes of 90 patients undergone scleral tunnel incision and phacoemulsification with posterior chamber intraocular lens implantation were divided into 2 group according to the methods of anesthesia. Topical anesthesia with intracameral injection of 0.2 of 1% unpreserved lidocaine was used to the 50 eyes of 45 patients[group 1] and pinpoint anestesia to the rest[group 2]. Specular microscopy using non-contact specular microscope was done preoperatively, 1 week, 1 month and 3 months postoperatively to compare the endothelial morphologic changes between the 2 groups. The reduction of central corneal endothelial cell density at 3 months postoperatively was 9.45% in Group 1 and 8.74% in Group 2. The difference between the 2 groups was not significant statistically[p>0.1]. Postoperative changes in coefficient of variation[polymegathism] and hexagonality[pleomorphism] were not significantly different between the 2 groups either[p>0.1]. We therefore concluded that intracameral injection of 1% unpreserved lidocaine does not adversely affect the corneal endothelial cell function and morphology and may safely be used as a supplement to topical anesthesia in cataract surgeries.
Anesthesia ; Cataract* ; Endothelial Cells ; Endothelium, Corneal* ; Humans ; Lens Implantation, Intraocular ; Lidocaine* ; Microscopy ; Phacoemulsification

Pterygium is a common surgical ocular disease which recurs frequently. Various different techniques have been developed for the successful surgical treatment of pterygium and among them, autograft transplantation is known as the best successful surgical method. For the prevention of recurrence, the corneal epithelium must heal before the fibrovascular tissue grows and reaches to limbus. For this, we have believed that limbal transplanta- tion is more suitable than conjunctival transplantation. We had performed limbal-conjunctival autograft trasplata- tion for 52 patients with primary pterygia whose age was under 40 years old,or whose pterygia had involved above 5mm beyond limbus and had shown diffuse subconjunctival fibrovascular tissue. The recurrence rate was 1.9%and therewere no complications and no surgical problems. Therefore,we recommend this surgical technique as a safe and effective method of treating primary pterygia with the risk factors of recurrence.
Autografts* ; Epithelium, Corneal ; Humans ; Pterygium* ; Recurrence ; Risk Factors

On this study, silicone intubation was performed for punctal stenois in 10 patients(group 1), incomplete nasolacrimal duct obstruction in 47 patients (group 2), and complete nasolacrimal duct obstruction in 18 patients(group 3) in adults. Silicone tube was removed between 3-6 months(mean 5.7 months) after intubation. Mean follow-up period of 9.5 months, 9 patients(90%)in group 1,39 patients(83%)in group 2,and 8 patients(44%) in group 3 showed no epiphora, and 1 patient(10%)in group 1, 8 patients (17%) in group 2, and 4 patients(22%) in group 3 showed intermittent epiphora. 6 patients(33%) in group 3 showed persistent epiphora. In summary, silicone intubation can be an alternative to dacryocystorhinostomy in selected adult patients who have punctal stenosis and incomplete obstruction of nasolacrimal duct system. It is safe, and less traumatic with high success rate in these patients.
Adult* ; Constriction, Pathologic ; Dacryocystorhinostomy ; Follow-Up Studies ; Humans ; Intubation* ; Lacrimal Apparatus Diseases ; Nasolacrimal Duct* ; Silicones*

Prisms have been used as tools with which to treat and diagnose many diseases in strabismology. But, because of prismatic distortion and dispersion, the visual acuities are declined. The purpose of this study is to show the relationship between prismatic effect and visual acuity degradation. Visual acuities were measured through a series of prisms of CR-39 to quantify the blur induced by prism. The mean visual acuities of myopias and amblyopias(with or without correction), and emmetropias were reduced as prism diopters were increased. The declines were linear. There was no significant difference among the declines of visual acuities of each group. Whenever to prescribe prisms and to test with prisms, we should remind that prisms could reduce visual acuities.
Emmetropia ; Myopia ; Visual Acuity*

Although the results of foldable intraocular lens are generally excellent, there are several complications. After cataract surgery with silicone lens, the patients with vitreoretinal surgery using silicone oil have not only visual acuity decrease, but also visual abberations such as halos and rainbow patterns. To report a newly defined complication, we studied the silicone lens-silicone oil interaction. The nonimplanted ilicone, acryl and PMMA lens, ten cases each, had been incubated in silicon oil at 36C for 9 months. After removal from the oil, each lens was examined and photograp hed by scanning electron microscopy every week. Appearance of lens surface and degree of adherence of the silicone oil to each IOL`s optic were estimated. Oily residue on the PMMA and acryl lens was removed easily and shown clear surface. In case of silicone lens, presence of distinct film or coating of oil was shown on the surface of both the optic and haptic component of IOL`s. They could not be removed with mechanical pressure with injected balanced saline solution and the oily residue remained strongly adherent to the optic surface. After 9 weeks, gelly-like adherence was appe ared on the silicone lens surface. As a result, the use of silicone IOL`s in patients with current vitreoretinal disease or those who are at high risk for future vitreoretinal disease that may require silicone oil as part of the therapy should be reconsidered.
Cataract ; Humans ; Lenses, Intraocular ; Microscopy, Electron, Scanning ; Polymethyl Methacrylate ; Silicone Oils* ; Sodium Chloride ; Visual Acuity ; Vitreoretinal Surgery

The value of dacryoscintigraphy in the assessment of lacrimal drainage system was examined in 20 children below 34 months of age, 28 symptomatic eyes and 12 asymptomatic eyes. Of 28 symptomatic eyes, 20(71%) had abnormalities of tear drainge on dacryoscintigraphy. Of 12 asymptomatic eyes, 10 had normal tear drainage systems on dacryoscintigraphy. Because of the good natural physiological character and simplicity of this procedure and lower risk of radiation hazard. dacryoscintigraphy is a useful technique in the assessment of lacrimal drainage systems in children with symptom of epiphora.
Child* ; Drainage ; Humans ; Lacrimal Apparatus Diseases* ; Tears