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At least 1,045 records · Page 58Linked to original sources
PubMed1996

Cost effectiveness and cost utility of preventing trachomatous visual impairment: lessons from 30 years of trachoma control in Burma.

AIMS/BACKGROUND: This paper reports on the findings of a cost and effectiveness study of the trachoma control programme (TCP) in Burma. The TCP began in 1964 employing non-surgical interventions (community education and mass treatment with topical antibiotics) and surgical correction of trichiasis. METHODS: Fixed and variable costs of the TCP are assessed over 30 years (1964-93) and apportioned to either surgical or non-surgical interventions. The change in the prevalence of trachoma blindness during this period is used to calculate cases of visual impairment prevented by the TCP. The years of life saved because of premature mortality averted and from living in a handicapped state are added to yield a single measure of utility called handicap adjusted life years (HALYs). RESULTS: The cost effectiveness of the TCP is $54 per case of visual impairment prevented: $193 and $47 for surgical and non-surgical interventions respectively. The cost utility of the TCP is $4 per HALY averted: $10 and $3 for surgical and non-surgical interventions respectively. Results are highly sensitive to the 1965 prevalence of blindness, the choice of discount rate, and the effectiveness of both interventions. CONCLUSIONS: Thirty years of trachoma control in Burma are associated with a remarkable decline in trachomatous blindness. Both surgical and non-surgical interventions are cost effective means of preventing trachomatous visual impairment. Discussion focuses on methodological limitations and implications for research and policy.

Blindness↗
PubMed1998

Trachoma in The Gambia.

BACKGROUND: As part of the second National Survey of Blindness and Low Vision in the Gambia carried out in 1996, all survey participants were examined for signs of trachoma. The findings were compared with the results of the first survey in 1986, which used the same sampling strategy. METHODS: A multistage stratified cluster random sample, with proportional probability sampling, was obtained. Stratification included settlement size (less than 400 residents, and 400 and more residents). All subjects were examined for trachoma using the simplified WHO grading system. RESULTS: Of the sample of 14,110 people, 13,047 (92.5%) were examined. Active inflammatory trachoma (grade TF or TI) was found in 3.0% of all age groups and 5.9% of children aged 0-9 years old. Trichiasis was found in 3.3% and trachomatous corneal opacities in 0.9% of adults aged 30 and over. The prevalence of blinding trachomatous corneal opacities was 0.02%, compared with 0.10% 10 years previously. CONCLUSION: Compared with a previous national survey undertaken in 1986, prevalence of active trachoma has fallen by 54%. There has been an 80% relative reduction in blinding trachomatous corneal opacities over the 10 year period.

Adolescent↗
PubMed2000

Surgical correction for lower lid epiblepharon in Asians.

BACKGROUND/AIMS: Epiblepharon is a congenital lid anomaly in which a fold of skin and underlying orbicularis muscle push the lashes against the eyeball. It is important to get a good lash eversion effect without forming a prominent lid crease in Asian patients. The surgical effect of this rotating suture technique was evaluated. METHODS: Surgical correction for epiblepharon was performed on 197 patients and the results analysed in 169 patients who had been followed for 1 month or more. After subciliary incision, several buried 8-0 nylon sutures were placed to allow adhesion between the tarsal plate and the subcutaneous tissue of the upper skin flap with minimal resection of pretarsal orbicularis and redundant skin. RESULTS: 156 patients (92.3%) showed satisfactory results during 7.1 months of average follow up. Reoperation was performed only on two patients out of 13 because of mildness of symptoms and signs. Complications were minimal including suture abscesses in four patients and wound dehiscence in one. CONCLUSION: The rotating suture technique was very effective in repairing epiblepharon without forming a prominent lower eyelid crease.

Adolescent↗
PubMed2001

Trichotillomania.

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Antipsychotic Agents↗
PubMed2002

Longitudinal study of trachomatous trichiasis in the Gambia.

AIM: Investigation of the natural history of trachomatous trichiasis in the Gambia and of the outcome of self epilation and surgery for the condition. METHODS: A 1 year longitudinal study of 190 subjects with trichiasis was performed. Major trichiasis cases (five lashes or more) were referred for surgery and minor trichiasis cases were advised to epilate. Outcome measures included progression of trichiasis and corneal scarring; attendance for and results of surgery. RESULTS: 34 of 148 (23%, 95% CI 16 to 31) subjects with major trichiasis attended for surgery over the year. Progression from minor to major trichiasis occurred in 18 of 55 subjects (33%, 95% CI 21 to 47). Progression of corneal scarring occurred in 60 of 167 patients (36%, 95% CI 29 to 44). Clinically active trachoma and conjunctival bacterial isolation predicted progression of corneal opacity. Surgery was successful in 39 of 54 (72%) eyes. CONCLUSIONS: Despite the overall decline in trachoma in the Gambia, patients with both minor and major trichiasis remain at risk of developing corneal opacity. Active trachomatous inflammation and additional infection with bacteria may accelerate this process. Antibiotic treatment for trichiasis patients (in addition to surgery) should be investigated. Surgery for minor trichiasis may be indicated. Regular audit of surgical results is necessary with retraining where needed.

Adolescent↗
PubMed2003

Histological and morphometric analysis of the effects of argon laser epilation.

AIM: To analyse the location and extent of tissue damage induced after argon laser epilation. METHODS: Laser burns were applied to the lid margins of four patients before excision for entropion ("live tissue") and the lid margin of one patient was lasered after an excision for ectropion ("dead tissue"). The laser burns were directed towards the lash follicle and between 10 and 50 burns were applied with an argon blue-green laser set at power 0.9-1.0 W, at 0.1-0.2 second duration and a 100 micro m spot size. The tissues were processed for conventional histology. Serial sections were obtained and used for area measurements and three dimensional reconstructions of the burns to determine the volume and location of tissue destruction. RESULTS: The laser created a cone-shaped region of tissue ablation with surrounding coagulative necroses. Maximum burn depth was 1.2 mm in dead tissue and 0.8 mm in live tissue. Maximum necrosis depth was 1.4 mm in dead tissue and 0.9 mm in live tissue. Follicle depth ranged from 0.8 mm to 1.9 mm. Some of the burns had been misdirected in the dermis leaving target hair follicles intact, despite being of adequate depth. CONCLUSIONS: The argon laser has some potential for ablation of lash follicles, but accurate placement of the burn is essential and energy levels greater than those currently recommended should be applied. The treatment is ineffective in patients unable to remain immobile.

Aged↗
PubMed2002

Analysis of the phenotypic abnormalities in lymphoedema-distichiasis syndrome in 74 patients with FOXC2 mutations or linkage to 16q24.

INTRODUCTION: Lymphoedema-distichiasis syndrome (LD) (OMIM 153400) is a rare, primary lymphoedema of pubertal onset, associated with distichiasis. Causative mutations have now been described in FOXC2, a forkhead transcription factor gene. Numerous clinical associations have been reported with this condition, including congenital heart disease, ptosis, varicose veins, cleft palate, and spinal extradural cysts. SUBJECTS: We report clinical findings in 74 affected subjects from 18 families and six isolated cases. All of them were shown to have mutations in FOXC2 with the exception of one family who had two affected subjects with lymphoedema and distichiasis and linkage consistent with the 16q24 locus. RESULTS: The presence of lymphoedema was highly penetrant. Males had an earlier onset of lymphoedema and a significantly increased risk of complications. Lymphatic imaging confirmed the earlier suggestion that LD is associated with a normal or increased number of lymphatic vessels rather than the hypoplasia or aplasia seen in other forms of primary lymphoedema. Distichiasis was 94.2% penetrant, but not always symptomatic. Associated findings included ptosis (31%), congenital heart disease (6.8%), and cleft palate (4%). Other than distichiasis, the most commonly occurring anomaly was varicose veins of early onset (49%). This has not been previously reported and suggests a possible developmental role for FOXC2 in both venous and lymphatic systems. This is the first gene that has been implicated in the aetiology of varicose veins. CONCLUSION: Unlike previous publications, the thorough clinical characterisation of our patients permits more accurate prediction of various phenotypic abnormalities likely to manifest in subjects with FOXC2 mutations.

Abnormalities, Multiple↗