Abstract
Background
One of the earliest signs of aging is the appearance of wrinkles in the skin at the outer corners of the eyes (lateral canthal rhytids). The purpose of this study was to divide the lateral canthal rhytids into classified groups and describe their clinical characteristics and suitable treatments.
Methods
A total of 525 patients were included in the study. These patients were groups according to age and sex. Digital photographs of the subject’s lateral canthal rhytids (lateral view) were taken and classified as to type (upper, lower, and bidirectional) and degree of direction.
Results
A total of 425 patients (81 %) exhibited the bidirectional type of lateral canthal rhytids. The lower directional type was noted on 75 patients (14.3 %), while only 25 patients (4.7 %) exhibited the upper directional type. In the 30s age group, only 50 % exhibited the bidirectional type. However, this rate increased to a 100 % in the 60 year-old and above group. There seems to be no relationship between the type of lateral canthal rhytids and sex. The degrees of the angle of wrinkles were statistically significant only in the 30s and 40s age groups.
Conclusions
We classified lateral canthal rhytids into three groups. This classification helps to decrease the complications of botulinum toxin by associating different treatments with the type of lateral canthal rhytids.
Level of Evidence IV
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References
Mathes SJ, Hentz VR (2006) Rejuvenation of the upper face and midface: current techniques. In: Moelleken B (ed) Plastic surgery, vol 2, 2nd edn. WB Saunders, Philadelphia, pp 215–252
Lowe NJ, Ascher B, Heckmann M, Kumar C, Fraczek S, Eadie N, Botox Facial Aesthetics Study Team (2005) Double-blind, randomized, placebo-controlled, dose-response study of the safety and efficacy of botulinum toxin type A in subjects with crow’s feet. Dermatol Surg 31:257–262
Kane MA (2003) Classification of crow’s feet patterns among Caucasian women: the key to individualizing treatment. Plast Reconstr Surg 112(Suppl 5):33S
Lemperle G, Holmes RE, Cohen SR, Lemperle SM (2001) A classification of facial wrinkles. Plast Reconstr Surg 108:1735–1750
Agur AMR, Dalley AF (2005) Grant’s atlas of anatomy, 11th edn. Lippincott Williams & Wilkins, Baltimore
Ascher B, Rzany BJ, Grover R (2009) Efficacy and safety of botulinum toxin type a in the treatment of lateral crow’s feet: double-blind, placebo-controlled, dose-ranging study. Dermatol Surg 35:1478–1486
Shetty MK, IADVL Dermatosurgery Task Force (2008) Guidelines on the use of botulinum toxin type A. Indian J Dermatol Venereol Leprol 74(Suppl):S13–S22
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Park, D.H., Han, D.G., Shim, J.S. et al. Analysis of the Patterns of Lateral Canthal Rhytids and Reference for Botulinum Toxin Treatment in Orientals. Aesth Plast Surg 36, 1211–1215 (2012). https://doi.org/10.1007/s00266-012-9932-z
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DOI: https://doi.org/10.1007/s00266-012-9932-z