| Objective: To explore more objective and scientific evaluate method of therapeutic effect on Nevus of Ota after the treatment by Medlite C3 laser. Methods: 63 patients with Nevus of Ota were enrolled by rendom among the patients from the clinic. Digital camera and image collection system were used to take pictures of Nevus of Ota under designed conditions, the patients were took pictures before treatment and treated with Medlite C3 laser three months later respectively. These pictures were analysed through computer and eyes and the therapeutic effect of laser treatment were compared. Results: Therapeutic effective rate was found to be lower by computer image analysis compared with eyes evaluate. Conclusion: Computer Image analysis system could been used to quantitatively evaluate and it seems to be more objective.
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