ABSTRACT
Objective To study the asymmetry of the soft tissue thickness of upper eyelids in Shanghai female undergraduates undergoing double eyelid surgery.Methods Data were collected in 565 female students from Shanghai universities.Before surgery,oblique sagittal view images of the upper eyelids by 3.0T MRI were obtained and the following parameters were measured: soft tissue thickness at upper tarsal plate margin and upper central tarsal plate,sub-eyebrow and intra-orbital septum fat pad areas,and whole upper eyelid soft tissue areas.The resected orbicularis and intra-orbital septum fat were weighed by a highly accurated electronic balance.The eyelid asymmetry index (EAI) was calculated.Results The MRI (U/U2) central tarsal plate soft tissue thickness were:4.46±0.90 in the right side and 3.78±1.01 in the left; the intra orbital septum fat areas were:172.33±49.29 in the right and 136.34±37.42 in the left; the whole tissue areas were: 697.13±146.99 in the right and 500.66±158.87 in the left (P＜0.01 for all).The weight of the resected orbicularis oculi muscle and intra orbital septum fat pad were (0.18±0.05) g and (0.17±0.06) g for the right side,and (0.15±0.04) g and (0.06±0.05) g for the left side (P＜0.01 for all),respec tively.The orbicularis EAI was 0.17±0.06,and the intra orbital septum fat EAI was 0.41 ±0.08.Conclusions The asymmetric phenomenon of the upper eyelids' soft tissue thickness is commonly found in the Shanghai female undergraduates,and the main manifestation is that orbicularis and intra orbital septum fat in right side are thicker than that in the left.
ABSTRACT
Objective To observe the clinical effects of a new method:non-optic nerve transecring evisceration combined with first stage hydroxyapatite orbital implantation.Methods One hundred and twenty two eyes (122 cases) were randomly divided into group A and group B,evisceration was first undertaken,the scleral wall was superior-temporally to inferior-nasally dissected and double scleral petals were placed before the implanted hydroxyapatite artificial eyeball.The difference between group A and group B was:in group A,the optic nerve was transected behind the eyeball,but in group B,a 2 mm outside the optic nerve scleral circle cutting was taken.Hemostasis time before implantation,tensile force during conjunctival suture,pain during surgery,palpebral fissure height after eye speculum wearing,operation time consuming,pain after surgery,conjunctival edema and congestion,and ocular prosthesis wearing time were compared between the two groups.Results In groups A and B,the intra-operative hemostasis time were (23.46 ± 6.96)mins and (5.49 ± 1.72)mins,the tensile force score during conjunctiva suture were 3.39±0.74 and 0.45±0.59,the score of pain in the first day were 2.8 ±0.68 and 1.47 ± 0.67,the ocular prosthesis wearing time after surgery were (6.27±2.73) and (3.07 ± 2.11)weeks,respectively.The differences of all the parameters above were with statistical significance between groups A and B (P＜0.01).During 2 years follow-up,no complications such as orbital implant exposure or infection happened.Conclusions Compared to traditional methods,the non-optic nerve transecting evisceration method has merits of less impairment,short time-consuming,less pain,and quicker postoperative recovery.