No abstract available.
Germ Cells* ; Neoplasms, Germ Cell and Embryonal*

Vitreous surgery has become a widly practiced procedure for use in the variety of pathological conditions in the anterior and posterior semgment of the eye. The goal of the vitreous 'surgery is to clear the optic pathway and restore the anatomy and function of the eye. Vitreous surgery was performed in 28 eyes using the O'malley ocutome from April, 1980 to October, 1980. Among the 28 eyes, 14 eyes received anterior segment surgery and the other 14 eyes received posterior segment surgery. The follow up period after surgery ranged from 3 weeks to 7 months and the average period was 4 months. The conditions requiring surgery were as follows: 9 eyes had Reconstruction of anterior segment after trauma; 4, removal of pupillary membrane due to chronic uveitis and after cataract; and 1, anterior vitrectomy with removal of subluxated lens. As for the causes of posterior segment surgery, 5 eyes had trauma of eyeballs; 3, hypertensive retinopathies; 2, vitreous opacity with retinal detachment; 1, diabetic retinopathy; 1, central retinal vein occlusion; 1, nonmagnetic intraocular foreignbody; and 1, lost lens nucleus into the vitreous. The improvement of visual acuity after surgery was seen in 14 eyes (50%), 9 eyes in anterior segment surgery and 5 eyes in posterior segment surgery. The complications during operation were vitreous hemorrhage (1 eye; 3.5%), retinal detachment (2 eye; 7%), and traumatic cataract (1 eye; 3.5%). Postoperative complications were phthisis bulbi (1 eye; 3.5%), and cataract (1 ; 3.5%). We found that vitreous surgery is not only useful to removal of the various pathologic conditions of vitreous through the pars plana approach but in anterior segment as an emergency procedure at the time of trauma and vitreous loss during anterior segment surgery.
Cataract ; Diabetic Retinopathy ; Emergencies ; Follow-Up Studies ; Hypertensive Retinopathy ; Membranes ; Postoperative Complications ; Retinal Detachment ; Retinal Vein ; Uveitis ; Visual Acuity ; Vitrectomy ; Vitreous Hemorrhage

Phacofragmentation is one of the method of extracapsular lens extraction using ultrasonic frequency. We have used this method, sometimes inconjunction with anterior vitrectomy since April, 1980 for 10 eyes of 10 cataract or early adult cataract. Our machines for this purpose is one of the Girard type phacofragmetor, Berkeley Model 820 Fragmatome(TM), in conjunction with Berkeley Model 800A Ocutome(R). We have had quite good results after operation and we are sure this method was preferable operation at least in above mentioned cases. This is an our preliminary report and it will be necessary to perform operation to many cataract patients and to determine longterm effects of the operation.
Adult ; Cataract ; Humans ; Ultrasonics ; Vitrectomy

The authors experienced a case of congenital dermoid cyst. It originated from the orbit, bulbar conjuntiva of both eyes and upper-lid of the left eye. This 6 years-old boy has a history of a progressively enlarging mass on both lateral canthus, bulbar conjunctiva and upper-lid of the left eye without pain and discomfort since birth. At the time of his first visit to our hospital, the lesion was 3 X 3 X 1.5cm (left eye) and 1.5 X 1.5 X 1cm (right eye) in size, yellowish-brown in color, firm and breast-like in shape. The vision was peor (right 0.1, left H.M.), the extraocular muscle motion was slightly limited. The roentgenographic and laboratory studies were in the normal limits. The surgical removal of the lesion was successfully performed under general anesthesia. The histopathological study revealed a dermoid cyst. After discharge, the patient was followed-up for 30 days. On lhe 15th postoperative day, epithelization was found. We found no evidence of further new growth.
Anesthesia, General ; Child ; Conjunctiva* ; Dermoid Cyst* ; Humans ; Male ; Orbit* ; Parturition

During the last two years, 43 cases of various types of glaucomatous eyes recieved trabeculectomy ab externo under the surgical microscope. To increase filtration, edges of the scleral incision were cauterized after suture of the lamellar scleral flap. And successful trabeculectomy was achieved in 10 of 11 eyes (90%) with primary open angle glaucoma and in 15 of 17 eyes (88%) with chronic angle closure glaucoma. But the results of trabeculectomy in patients with congenital glaucoma. aphakic glaucoma and absolute glaucoma were poor. In one of the congenital glaucoma case, trabeculotomy was performed simultaneously with trabeculectomy and a good result was achieved.
Filtration ; Glaucoma ; Glaucoma, Angle-Closure ; Glaucoma, Open-Angle ; Humans ; Sutures ; Trabeculectomy*

The authors studied 410 cases of strabismus patients who visited our clinic from 1973 to 1978 Among them, 170 cases of esotropia, 234 cases of exotropia and 6 cases of hypertropia were observed. The average age at the time of onset was 3.4 years in esotropia and 5.2 years in exotropia. Visul acuity in exotropia was relatively good. 0.7 or more visual acuity was 53 % in exotropia and 34.7 % in exotropia. Refractive status, hypertropia above 1.5D was 64. 2 % in esotropia, but, no specific correlation was found between exotropia and refractive status. The incidence of amblyopia was 33.1 % in esotropia and 19.7 % in exotropia. In accomodative esotropia, the patients with high AC/A ratio were treated with bifocal segment glasses. and the results were good.
Amblyopia ; Esotropia ; Exotropia ; Eyeglasses ; Glass ; Humans ; Incidence ; Strabismus* ; Visual Acuity

In surgery for facial asymmetry, mandibles can be classified into two types, rotational and translational, according to the required mandibular movements for surgery. During surgery for rotational mandibular asymmetry, a bilateral sagittal split ramus osteotomy (BSSRO) may cause a large bone gap between the proximal and distal segments as well as condylar displacement, resulting in a relapse of the temporomandibular joint disorder, especially in severe cases. The intraoral vertical ramus osteotomy has an advantage, in this respect, because it causes less rotational displacement of the proximal segment on the deviated side and even displaced or rotated condylar segments may return to their original physiologic position. Unilateral intraoral vertical ramus osteotomy (UIVRO) on the short side combined with contralateral SSRO was devised as an alternative technique to resolve the spatial problems caused by conventional SSRO in cases of severe rotational asymmetry. A series of three cases were treated with the previously suggested protocol and the follow-up period was analyzed. In serial cases, UIVRO combined with contralateral SSRO may avoid mediolateral flaring of the bone segments and condylar dislocation, and result in improved condition of the temporomandibular joint. UIVRO combined with contralateral SSRO is expected to be a useful technique for the treatment of rotational mandibular asymmetry.
Dislocations ; Facial Asymmetry ; Follow-Up Studies ; Mandible* ; Osteotomy* ; Osteotomy, Sagittal Split Ramus* ; Recurrence ; Temporomandibular Joint ; Temporomandibular Joint Disorders

Although we managed a patient with traumatic endophthalmitis with potent antibiotics for 7 days topically and systemically, her clinical symtoms and signs did not improved and her visual activity decreased from hand motion to light perception. So, we performed pars plana vitrectomy and lensectomy using the Ocutome(R) and Frognatome(TM) and achieved a successful result with final visual acuity of 50 cm finger count or better without evidence of phthisis bulbi in this case.
Anti-Bacterial Agents ; Endophthalmitis* ; Fingers ; Hand ; Humans ; Visual Acuity ; Vitrectomy*

A review of 16 patients diagnosed as having retinal detachment was presented. These cases were patients seen in P.M.C. eye clinic from Sep-73 to Feb-75. 9 of these patients did not have operation for various reasons, but the other 7 were operated by cryopexy, full-thickness scleral buckling with silicone materials, or encircling method with silicone band. The results were as follows; 1) 5 among 7 patients were successful in re-attachment and improvement of visual acuity. 2) No intraocular hemorrhage, the most serious complication due to cryopexy was seen in any of these cases. 3) In one case, the encircling band and implant were removed because small pus pocket and fistula were formed on the bulbar conjunctiva 3 months postoperatively.
Conjunctiva ; Fistula ; Hemorrhage ; Humans ; Retinal Detachment* ; Retinaldehyde* ; Scleral Buckling* ; Silicones ; Suppuration ; Visual Acuity

BACKGROUND: The aim of this study was to evaluate the awareness of occupational hazards and personal protective equipment use among dental hygienists (DHs).METHODS: A total of 271 self-administered questionnaires were obtained from 280 DHs working at dental hospitals or clinics in Daegu and Gyeongsangbuk-do, Korea.RESULTS: The occupational hazards included work involving dust (94.1%), volatile substances (86.0%), noise (97.0%), and light-curing units (96.7%). The proportion of dental hygiene tasks that participants perceived as harmful were 42.4%, 51.7%, 9.2%, and 31.4% in the same order as above. The proportion of participants who used dust-proof masks during work involving dust was 1.1%. Those who wore gas-proof masks and gloves for work using volatile substances were 0.7% and 31.2%, respectively. Participants who used goggles for work involving light-curing units were 31.0%. None of the participants used ear plugs for work involving noise. A total of 22.9% of the participants recognized the Material Safety Data Sheet, while 79.7% had never been educated about harmful work environments.CONCLUSION: When compared to exposure status and perception of occupational hazards, the level of protective equipment use was very low. Extra measures to increase DHs’ use of personal protective equipment are necessary.
Daegu ; Dental Hygienists ; Dust ; Ear ; Eye Protective Devices ; Gyeongsangbuk-do ; Humans ; Korea ; Masks ; Material Safety Data Sheets ; Noise ; Occupations ; Oral Hygiene ; Personal Protective Equipment