A prospective descriptive study was conducted to determine the ability of non ophthalmic personnel in eye screening program for young children (3 years ? 6 months) from three Kindergartens in Hat-yai district. Ninety-four (26.3%) out of 358 children were signed out for by their parents. Eighty nine children or 24.9% were examined by ophthalmic personnel while ninety one (25.4%) children were examined by a non ophthalmic group. Between January 2003 and January 2004, ninety four children (49 boys and 45 girls) were subjected to eye examination. The average ages were 3.3 ? 2.7 years. The mean refractive error (retinoscopy) in the right and left eye were -0.2 ? 0.5 diopters and -0.3 ? 0.4 diopters, respectively. The cut point of visual acuity test (LEA test) was Log Mar > 0.4. The sensitivity of results for ophthalmic personnel revealed 57.1% in contrast to 85.7% to the non ophthalmic group. Specificity test showed 93.9% for the former, and 90.2% for the latter. The positive predictive values were 44.4%, 42.9% and the negative predictive value were 96.3%, 98.7% respectively. The eye screening program for young children can therefore be done by non ophthalmic personnel.
Objective : This retrospective study analyses the post-operative results of the surgical procedure for upper lid trichiasis. Surgical technique : Most of the cases were operated on by segmental lid splitting at the grey line, and covering the extent of all trichiatic lashes. Then, the anterior lamella was shifted upward and fixed against the posterior lamella with full-thickness mattress suture(s). Patients and
Methods : Eighteen eyelids of 15 patients were performed the described operation in Rajavithi hospital during November 4, 1998 and June 25, 2003. The results revealed that four (26.67%) of 15 cases were male, the mean age was 63.13 years, and the average follow-up time was 144 days. The procedure was successful in 14 of 18 eyelids (77.77%), with success being defined as no lashes touching the globe. The main causes of failure were surgical technique (11.11%) and the linkage of the control of the underlying etiology (11.11%).
Conclusion : This lid split procedure for correction of upper lid trichiasis is simple, free of complication and provides good functioning and cosmetic results.
Success rate of Initial Probing for Congenital Nasolacrimal Duct Obstruction in Children Beyond 1 Year of Age
Objective : To determine the success rate of initial probing for congenital nasolacrimal duct obstruction in children beyond 1 year of age.
Methods : We reviewed the results of probing for 104 obstructed nasolacrimal duct in 77 children who presented consecutively to author and had been done probing from July 1998 to October 2003. The age of these patients ranged at the time of probing from 13 months to 10.25 years, with an average of 29.4 months. Successful outcome of probing was defined as absence of tearing, discharge and/or intermittent tearing only with an upper respiratory tract infection.
Results : Eighty-eight eyes (84.61%) were cured after the first probing. When broken down into age categories, the success rate varied from 71.43% to 89.19%. Chi-Square test showed no correlation between cure rate and increasing age (P-value = 0.536).
Conclusion : Probing for congenital nasolacrimal duct obstruction in children beyond 1 year of age is highly successful and the cure rate does not vary significantly at intervals of increasing age. These data support the simple probing, which can be done in children up to 10 years of age before step up to other surgical intervention, such as silicone intubation, dacryocystorhinostomy.
Objective : To make a simple low cost closed-circuit television (Simple CCTV) for the severe and profound visual impairment patients
Methods : We used to bottle (1.5 L) of water to make a handheld and mounted the video camera in the handheld. The handheld video camera can project a magnified image onto a television screen. The handheld cameras are portable systems designed for viewing the characters of newspapers (equivalent to J5 or 20/50 of Lea number at 16 inches). Three sizes of simple CCTV #1, #2, #3 were made. These CCTV?s connected to TV 5.5?, 14?, 21?, 29?, respectively. Fluorescent lamp was used as a light source.
Result : Simple CCTV #1 can electronically magnify up to 3.4 x, 10x, 13x, 18x and displays 17 to 21 characters on the televisions. Number 2 can magnify up to 7x, 21x, 30x, 40x, and 8-10 characters, and number 3 magnifying up to 13x, 40x, 50x, 70x and 4-5 characters.
Conclusion : Simple CCTV can magnify the characters of newspaper as good as standard CCTV, but simple to be made, much less expensive.
Mydriatic Efficacy of Eye-drop Combination of 0.5% Tropicamide and 0.5% Phenylephirine Compare to 1% Tropicamide and 10% Phenylephrine in Cataract Surgery
Objective : To compare the mydriatic effect between eye drop combination of 0.5% tropicamide with 0.5% phenylephrine and two mydriatic drugs of 1% tropicamide and 10% phenylephrine in preoperative for cataract surgery.
Methods : Fifty-five cataract patients were prospective studied at Ramathibodi Hospital, under local anaesthesia. Patients were randomized into two groups, each group receiving a different preoperative mydriatic regimen. Regimen A consisted of two drugs 1% tropicamide and 10% phenylephrine, one drop instillation every 5 minutes 3 times alternately. Regimen B consisted of two drugs combination, 0.5% tropicamide with 0.5% phenylephrine, two deop 5 minutes separately. The main outcome measures were horizontal papillary diameter before local anaesthesia and successful in cataract surgery.
Results : The group who received regimen A attained a mean horizontal papillary diameter of 7.92 ? 1.10 mm. (before local anaesthesia). Seventeen eyes (70.83%) were dialated to > 8 mm. These pupils were not significant different from those receiving regimen B (8.40 ? 0.84 mm. P = 0.071). Twenty six eye (83.88%) were dilated to > 8 mm. before local anaesthesia. All cases were successful in cataract surgery and intraocular lens insertions.
Conclusion : The combination of 0.5% tropicamide and 0.5% phenylephrine is recommend as preoperative mydriatic for cataract surgery.
Obfective : To evaluate visual outcome after arteriovenous crossing dissection for the treatment of branch retinal vein occlusion (BRVO). Study design : Retrospective descriptive case series
Materials and Methods : A retrospective, case review study from October 2000 to July 2003. 5 patients with a branch retinal vein occlusion with decreased visual acuity due to macular edema, ischemia, or hemorrhage were performed surgical decompression of BRVO via arteriovenous crossing sheathotomy.
Results : All patients showed clinical improvement as determined by fundus examination, phothographt, and fluorescein angiographt. Postoperative visual acuities were improved in all patients.
Conclusion : Surgical decompression of BRVO via arteriovenous crossing sheathotomy is a technically feasible procedure that can result in rapid reperfusion of the retina and improvement of visual acuities.