[Primary study of corneal exposure ratio measured by Photoshop pixel method].

Objective: To investigate the role of corneal exposure ratio in eyelid aesthetic assessment through the measurement by Photoshop pixel method in beauties and patients with double eyelid blepharoplasty.

Methods: 30 cases of female beauties and 43 cases with double eyelid blepharoplasty(23 cases with suture method and 20 cases with incision method) underwent measurement of corneal exposure ratio by Photoshop pixel method before operation and half a year after operation. The results were analyzed by SPSS 16.0 and compared between different sides or between pre-and post-operation.

Results: The corneal exposure ratio was (87.34±4.15)％ on the left side and (87.22±3.77)％ on the right side in the beauties. In the 23 cases with suture method, the pre-and post-operation results were (83.02 ± 4.05)％ and (83.32 ±3.74)％ on the left side,(82.93 ±3.75)％ and (83.85±3.65)％ on the right side. In the 20 cases with incision method, the pre-and post-operation results were (64.05 ±4.53) ％ and(84.93±2.39)％ on the left side,(64.44 ±4.86)％ and (85.09 ±2.77)％ on the right side.

Conclusions: Corneal exposure ratio plays an important role in the eyelid aesthetic assessment. The measurement of Photoshop pixel method can provide an objective and precise assessment parameter for double eyelid blepharoplasty.