Biomedical subjects

S S Yarng

Publications and source records attributed to S S Yarng.

4 recordsLinked to original sources

PubMed1998

Detection of diabetic retinopathy using non-mydriatic fundus photography at Chang Gung Memorial Hospital.

BACKGROUND: Despite recent improvements in the care of diabetic patients, diabetic retinopathy remains the most common cause of blindness among the diabetic population. The aim of this study is to identify the incidence and severity of diabetic retinopathy among diabetic patients followed-up at the metabolic clinics of the Chang Gung Memorial Hospital in Taoyuan, Taiwan. MATERIALS AND METHODS: We investigated the retinas of diabetic patients who were followed-up at the metabolic clinics and received non-mydriatic fundus photograph from April 1994 through June 1994. RESULTS: There were 694 patients with type 2 diabetes enrolled in this study. Their mean age was 56.2 +/- 11.1 years and the mean number of years since diagnosis was 5.9 +/- 5.7 years. Among them, 171 (25%) patients had diabetic retinopathy, including 109 (15.7%) background, 45 (6.5%) preproliferative and 17 (2.4%) proliferative cases. The presence of diabetic retinopathy correlated with the number of years since diagnosis of these diabetic patients (odds ratio: 1.03; p = 0.0024). CONCLUSION: Non-mydriatic fundus photography is a good screening method for diabetic retinopathy detection. Twenty-five percent of type 2 diabetic patients followed-up at our metabolic clinics had diabetic retinopathy with background retinopathy being the most predominant. The most significant risk factor of diabetic retinopathy is the number of years since the patient was diagnosed with diabetes.

Adult↗

PubMed1997

Vitrectomy for endogenous Klebsiella pneumoniae endophthalmitis with massive subretinal abscess.

A 39-year-old man with pyogenic liver abscess had bilateral endogenous Klebsiella pneumoniae endophthalmitis. At presentation, the left eye had a localized subretinal abscess. Despite repeated intravitreal amikacin and dexamethasone injections, a subretinal abscess spread and detached all of the retina. Pars plana vitrectomy with drainage of the subretinal abscess was performed. The retina was reattached, and the patient had 5/200 vision 5 months postoperatively. Early vitrectomy with drainage of the subretinal abscess may save some eyes with endogenous Klebsiella pneumoniae endophthalmitis.

Abscess↗

PubMed1993

Vitreous hemorrhage from a persistent hyaloid artery.

A 14-year-old girl developed spontaneous vitreous hemorrhage from the free end of a partially regressed hyaloid artery. Fluorescein angiography confirmed the hemorrhage was from the retinal arterial rather than venous circulation. The vessel became a fibrosed, occluded, and semitransparent thread after 20 months of follow-up evaluation. It was postulated that the rapid eye movement (REM) phase during sleep may create a tractional force and leads to rupture of the freely floating hyaloid artery. A patent persistent hyaloid artery should be included in the list of the causes of vitreous hemorrhage, especially in healthy young people.

Adolescent↗

PubMed1993

A modified removable suture in trabeculectomy.

We modified the closure of the scleral flap in trabeculectomy by using an externalized hemibow tie, easily removable in the early postoperative period. We used this externalized knot in 20 eyes of 17 patients undergoing trabeculectomy and in eight eyes of seven patients undergoing combined trabeculectomy and cataract extraction with intraocular lens implantation. The sutures were removed between 2 and 72 days after surgery (16.75 +/- 14.49 days). With a mean follow up of 11.36 months, the overall success rate was 78.6%. The sutures of nine eyes (32%) were removed due to elevated intraocular pressure and/or decreased bleb size. The immediate and long-term efficacies were 77% and 56%, respectively. The trabeculectomies we performed using this safe and simple technique, as compared with those using other methods of scleral flap closure, provided a lower incidence of postoperative complications due to overfiltration, and made it possible to increase the degree of filtration when needed during the early postoperative period.

Aged↗