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  • Title: Excimer laser photorefractive keratectomy in Singapore--a new treatment modality for myopia.
    Author: Balakrishnan V, Lim AS, Low CH, Lee CP, Tseng PS, Chan WK, Chan TK, Tan J, Tan D.
    Journal: Singapore Med J; 1993 Aug; 34(4):309-12. PubMed ID: 8266200.
    Abstract:
    BACKGROUND: Myopia is a national epidemic in Singapore. Photorefractive Keratectomy (PRK) for the treatment of myopia using the Argon Fluoride Excimer Laser commenced in January 1992 at the Singapore National Eye Centre. METHODS: An open, prospective, non randomised clinical trial to assess the efficacy, predictability, stability, and safety of PRK for the correction of myopia between -2.0 to -6.0 dioptres. RESULTS: One hundred and fifty-five eyes of one hundred and thirty-five patients underwent PRK between January and September 1992, of which thirty-one had completed at least six months of follow-up. Twenty-nine of the thirty-one patients (93.5%) achieved an unaided visual acuity of at least 6/12. Twenty-six patients (83.9%) were within 1 dioptre of emmetropia. There was an initial over-correction in all patients which regressed to a plateau at around three or four months. Corneal haze did not pose a significant problem. Three patients had ocular hypertension, and another developed a mild allergic reaction to the antibiotic-steroid ointment. CONCLUSIONS: Excimer Laser Photorefractive Keratectomy is a very effective, fairly predictable, stable and safe surgical method for the treatment of myopia.
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