Distribution of spontaneous inter-blink interval in repeated measurements with and without topical ocular anesthesia

Arquivos Brasileiros de Oftalmologia

Felipe Placeres Borges¹  Denny Marcos Garcia¹  Antonio Augusto Velasco E Cruz¹ 

[1] ,Universidade de São Paulo Faculdade de Medicina de Ribeirão Preto Otorrinolaringology and Head and Neck Surgery DepartmentRibeirão Preto SP ,Brazil

关键词: Blinking;    Blinking;    Administration;    topical;    Anesthesia;    Ophthalmic solutions;    Eyelids;    Piscadela;    Piscadela;    Administração tópica;    Anestesia;    Soluções oftálmicas;    Pálpebras;   

DOI  :  10.1590/S0004-27492010000400005

来源: SciELO

【 摘 要 】

PURPOSE: To determine if the distribution of inter-blink time intervals is constant with repeated measurements with and without topical ocular anesthesia. METHODS: Inter-blink time was measured in 15 normal subjects ranging from 19 to 32 years (mean ± SD= 23.9 ± 3.20) with the magnetic search coil technique on 3 different occasions, the last one with topical ocular anesthesia. RESULTS: One-way analysis of variance for repeated measurements showed that topical anesthesia significantly reduced the blink rate (blinks per minute), which was constant in the first two measurements (F=8.27, p=0.0015. First measurement: mean ± SD= 13.7 ± 7.8; second measurement: 13.1 ± 8.5 SD; with topical anesthesia: = 7.2 ± 4.6). However, distributions shape was not affected when the blink rate was reduced. The three distributions followed a Log Normal pattern, which means that the time interval between blinks was symmetrical when the time logarithm was considered. CONCLUSIONS: Topical ocular anesthesia reduces the rate of spontaneous blinking, but does not change the distribution of inter-blink time interval.

【 授权许可】

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