Data for: The adaptation and acceptance of Defocus Incorporated Multiple Segments（DIMS） lens for Chinese adolescents
Description
The purpose of this study is to explore the adaptability of chinese adolescents to the new multi-zone positive defocusing optical lens, mainly based on the visual results and subjective visual symptoms after the wearing. Considering that some teenagers can't clearly express their subjective feelings because the young age, we especially set up an adult group to reduce the false negative rate. After wearing the two lenses for 30 minutes, the distant visual acuity in the primary gaze was examined under both bright（500 lux）and dim (50 lux) illuminance, using high (100%) and low (10%) contrast ETDRS visual charts. Near visual acuity at 40 cm through the central optical zone as well as through the mid-peripheral zone were also measured under these two levels of ambient illuminance. A questionnaire regarding visual performance and acceptability of the assigned lenses was requested to fulfilled at the one-week visit (The questionnaire is attached in the appendix). The subject was requested to select the listed symptoms and give a score according to the frequency of occurrence: 0 = None (0 times / day), 1 = Occasionally (1-2 times / day), 2 = Sometimes (3-4 times / day), 3 = Always (5-6 times / day), 4 = Complete (> 7 times / day). The acceptability of the assigned lenses was evaluated by answering the following questions: 1. Would you like to wear SV in your daily life? 2. Would you like to wear DIMS in your daily life? 3. Which one you dislike more? 4. If the lens you dislike can significantly slow myopic progression by 59%, would you like to wear?