호흡 알코올 농도 증가가 시야 및 가독시야에 미치는 영향

정수아,남수경,김현정 한국안광학회 2016 한국안광학회지 Vol.21 No.2

Purpose: This study was aimed to investigate effects of breath alcohol concentration (BrAC) increase on visual field and readable visual field. Methods: 23 males in 20s (average age 21.17±2.19 years, body mass index (BMI) 22.09±2.16) were selected and administered the amount of alcohol to reach 0.05% and 0.08% BrAC calculated by BAC (blood alcohol concentration) Dosing Software program. Then, visual field and readable visual field test with Vision Disk were conducted. Results: Visual field are measured as 74.41±15.97o, 64.98±17.93o, and 58.33±19.01o (p=0.000) and readable visual field as 21.93±12.71o, 17.41±11.36o, 14.26±9.93o (p=0.006) in 0.00%, 0.05% and 0.08% BrAC respectively. As breath alcohol concentration increased, both visual field and readable visual field decreased. Conclusions: BrAC increase with drinking could be the cause of safety accident by decreasing visual field and readable visual field, it is necessary to raise awareness. Key words: Breath alcohol concentration (BrAC), Watson equation, Visual field, Readable visual field 목적: 호흡 알코올 농도(BrAC) 증가가 시야 및 가독시야에 미치는 영향을 알아보고자 하였다. 방법: 20대 남성23명(평균연령 21.17±2.19세, BMI 22.09±2.16)을 대상으로 호흡 알코올 농도 0.05%와 0.08%에 도달에 필요한 섭취 알코올 양을 BAC(Blood Alcohol Concentration) Dosing Software를 이용하여 산정하고 섭취시킨 후, Vision Disk 를 이용해 시야와 가독시야를 각각 측정하였다. 결과: 시야는 호흡 알코올 농도 0.00%에서 74.41±15.97o, 0.05%에서 64.98±17.93o, 0.08%에서는 58.33±19.01o로 측정되었고(p=0.000), 가독시야는 0.00%에서 21.93±12.71o, 0.05% 에서 17.41±11.36o, 0.08%에서는 14.26±9.93o로 측정되어(p=0.006), 호흡 알코올 농도가 증가할수록 시야와 가독시야 모두 감소하였다. 결론: 음주로 인한 호흡 알코올 농도 상승은 시야 및 가독시야를 감소시켜 안전사고 발생의 원인이 될 수 있으므로 이에 대한 경각심이 필요하다.

근거리용 탄젠트 스크린 고안을 통한 저시력학생의 시야 검사

류현,이해균 한국특수교육학회 2013 특수교육학연구 Vol.48 No.3

시각장애학생의 시기능 특성을 고려한 교육이 이루어지기 위해서는 그와 관련된 진단 평가를 반드시 실시하고 그 결과를 적극 활용해야 한다. 이러한 진단 평가 중 기능시력 평가의 한 요소로 시야를 생각할 수 있다. 이에 따라 본 연구는 저시력학생의 시야 측정에 적절한 근거리용 탄젠트 스크린 고안과 이를 활용한 저시력학생의 시야 검사 결과의 분석을 목적으로 한다. 탄젠트 스크린의 규격을 35cm 거리에서 30°까지의 시야를 검사할 수 있도록 정하였다. 이는 기존의 1m 탄젠트 스크린에 비하여 시표를 저시력학생이 식별하기가 용이하다. 또한 기능시력 평가를 위한 공간이 확보되지 않은 우리나라의 교육현장을 고려하여 스크린을 이동하기 편하게 하였다. 그리고 고안한 근거리용 탄젠트 스크린을 사용하여 7명의 대상자에게 시야 검사를 실시하고 결과를 분석하였다. 이로 인하여 근거리용 탄젠트 스크린으로 시야 검사를 하였을 때 안과 검사에 대한 진술이나 일반적으로 알려져 있는 눈의 질환에 따른 시야 특징과 유사한 결과가 나타난다는 것을 확인하였다. Functional vision assessment is essential for educating students with visual impairments, especially those with low vision. One of components of functional vision is visual field. The purpose of this study is designing near point tangent screen for visual field assessment of students with low vision. It designed 35cm distance for test of 30 degrees of visual field. It reduced distance of test of visual field, and facilitated visual field test for low vision, and was more portable than 1m tangent screen. It uses transparent magnets for noting the points of border of visual field instead of black pins scratch the screen. Seven students with low vision have visual acuity greater than 20/2000(0.01) is assessed their visual fields using the 35cm distance tangent screen designed in this study. Because of visual field test of 35cm distance needed visual acuity greater than 20/2800(≒0.007), approximate value of the visual acuity 20/2000(0.01) was criterion of participation of students with low vision in this study. The results of their visual fields assessed by using 35cm distance tangent screen are compared with their doctoral eye examination brief of visual fields and conditions of visual fields of eye pathologies. The 35cm distance tangent screen results is similar to results of other two types, and available for assessment of visual fields. It is alternative tool in schools for the visually impaired, for assessment of visual fields of students with low vision have visual acuity greater than 20/2000(0.01).

실내조명환경의 질적 평가를 위한 좌우시야의 불쾌글레어감 비교

정주희(Joo Hee Jung),김원우(Wonwoo Kim),김정태(Jeong Tai Kim) 한국생활환경학회 2009 한국생활환경학회지 Vol.16 No.6

Visual discomfort glare in daylight interior environment is main issue for healthy buildings. Existing studies have been conducted in the limited visual field and binocular visual field. The sensation of discomfort glare should be verified in whole visual field and monocular visual field for position index. The objective of this study is to investigate discomfort glare sensation of binocular and monocular visual field over the entire visual field. Total of 225 conditions for each person were tested on a glare tester. Three types of tests, the average visual field, the luminance of the borderline between comfort and discomfort (BCD) at sixteen radial angles and the BCD luminance on line of sight were measured using the kinetic method. The results show that the distribution of glare sensation of binocular and integrated monocular visual field have no significant differences. The left monocular visual field and right monocular visual field were symmetrical each other. This results can be used not only to develop discomfort glare formula but also to create comfortable indoor places.

Modified Trans-Middle Temporal Gyrus Approach for Trigonal Tumor to Preserve Visual Field

Choi, Jeong-Wook,Jung, Shin,Jung, Tae-Young,Jang, Woo-Youl,Moon, Kyung-Sub,Kim, In-Young The Korean Neurosurgical Society 2011 Journal of Korean neurosurgical society Vol.50 No.6

Objective : We evaluated a modified trans-middle temporal gyrus (MTG) approach with good postoperative visual preservation for patients with trigonal tumors. Methods : Three patients with a trigonal tumor were treated via the modified trans-MTG approach guided by a neuro-navigator. Modified trans-MTG approach involve the incision at the MTG within 5 mm to the superior temporal sulcus. This approach makes a proper trajectory to the trigone but also reduces the retraction injury of MTG as little as possible to prevent postoperative visual field defect. Preoperative and postoperative visual field examination using perimetry was performed to evaluate the visual field. Results : Three patients underwent surgery for lymphoma in the right trigone, meningioma in the left trigone, and focal enhancing nodule in the right paratrigonal area, respectively. In case of lymphoma, preoperative examination showed a left homonymous hemianopsia : one week later after surgery, a visual field examination was performed and revealed improvement of the visual field defect. In case of the meningioma, the preoperative examination showed no visual field defect : one month later, the visual field had no defect. In case of the enhancing nodule, preoperative visual field testing revealed a partial left homonymous hemianopsia. Visual examination within one month after surgery showed no visual field defect. All three patients treated with the modified trans-MTG approach showed no visual deterioration after surgery. Conclusion : The modified trans-MTG approach provides a safe and useful technique for trigonal tumors without postoperative visual field deterioration and affords adequate exposure of the trigonal tumor with a short trajectory.

한국어 명사어절의 시각적 정보처리과정과 관련된 좌우반구의 언어처리과정 탐구: 좌우시야 분할 연구

김상엽,구민모,김제홍,남기춘 한국인지및생물심리학회 2020 한국심리학회지 인지 및 생물 Vol.32 No.1

Even though language processing is quite dissimilar on each hemisphere, it has been rarely studied what language information could be utilized to recognize Korean noun Eojeol in bilateral hemispheres. Eojeol is adequate for speculating language processing as it is a complicated lexical-unit in Korean. The purpose of this study is to investigate the functional contribution of bilateral hemispheres to visual processing on Korean noun Eojeol through visual half-field study. In this study, two experiments were performed. One is that Eojeol was presented in the central visual field, the other is that Eojeol was presented in the right or left visual field. Afterwards, the regression analysis was conducted to analyze the lexical variables that significantly affect the response time of Eojeol decision. It shows additionally significant lexical-variables in left and right visual field compared to center visual field. Tthe ‘root frequency’ variable was additionally significant in the right visual field. On the other hand, ‘number of strokes’, ‘number of syllables’, ‘number of letters’, ‘number of objective meanings’, and ‘number of subjective meanings’ variables additionally were significant in the left visual field. The reason for additionally significant lexical variables in each visual field was due to the induction of functional deficit in one hemisphere leading to primary Eojeol processing in the other hemisphere. This cognitive processing has a relation with the hemisphere-specific function of bilateral hemispheres. In conclusion, this study demonstrated the functional contribution of the bilateral hemispheres that could be involved in the language information processing of noun Eojeol through the visual half-field study. 좌우반구의 언어정보처리 특성은 매우 상이하나 좌우반구에서 어떤 종류의 언어정보가 다르게 재인되는지에 대한 연구는 드물다. 한국어 어절은 형태소, 단어, 문장성분 등의 정보를 담고 있는 복잡한 언어단위로 좌우반구에서 여러 종류의 언어정보를 다른 방법으로 정보처리 할 가능성을 조사하기에 적절하다. 본 연구의 목적은 어절판단과제(Eojeol decision task)를 좌우시야분할 연구방법(visual half-field study)으로 제시하여 명사어절 정보처리과정과 관련된 좌우반구의 어절정보처리에 대해 탐구하는 것이다. 이를 위해, 본 연구에서는 어절이 중앙시야에 제시되는 실험과 우시야 혹은 좌시야에 제시되는 실험이 수행되었다. 그 후에 어절판단시간에 유의미하게 영향을 미치는 어절변인들을 분석하기 위해 상관 분석과 회귀 분석이 수행되었으며, 이를 통해 어절이 중앙시야에 제시될 때에 비해 우시야 혹은 좌시야에 제시될 경우 추가적으로 유의미한 어절변인들을 확인하였다. 실험 결과, 우시야 조건에서는 ‘어근 빈도’ 변인이 추가적으로 유의미하게 나타났으며 좌시야 조건에서는 ‘획 수’, ‘음절 수’, ‘자모 수’, ‘사전적 의미 수’, 그리고 ‘주관적 의미 수’ 변인들이 추가적으로 유의미하게 나타났다. 각 시야 조건에서 추가적으로 유의미한 어절변인들이 나타난 이유는 자극정보처리를 한쪽 반구가 우선적으로 처리하도록 유도할 경우 다른 쪽 반구 기능이 미숙하게 나타나 이를 보상하기 위한 인지처리반응이 나타나기 때문인 것으로 여겨진다. 그리고 이 인지처리반응은 해당 반구에서 정보처리 할 수 있는 반구-특성적(hemisphere-specific) 기능과 관련 있을 것으로 여겨진다. 결과적으로, 본 연구에서는 명사어절이 중앙시야에 제시된 경우와 우시야 혹은 좌시야에 제시된 경우에 따라 다르게 나타나는 반응을 통해서 명사어절 정보처리 과정에 관여할 수 있는 좌우반구의 정보처리에 대해 탐구하였다.

골드만과 험프리 동적시야검사에 따른 정상시야의 비교

정송이,이성진,최경식,박성희 대한안과학회 2009 대한안과학회지 Vol.50 No.6

Purpose: To show Humphrey automated kinetic perimetry can be substituted for Goldmann perimetry, which has been used in the field of disability evaluation field, the differences of normal visual fields between two perimetries were evaluated. Methods: Goldmann and Humphrey automated kinetic perimetries were performed simultaneously in 70 eyes of 35 normal healthy Koreans who had no specific ophthalmologic disease at 12 meridians; 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, and 330°. The mean values of field in each case were compared. In addition, the corrected values were obtained through the calculation of the difference in the two maximal fields. Results: The visual fields of Humphrey and Goldmann kinetic perimetries showed a similar oval shape, but the fields of Goldmann were statistically significantly wider than the Humphrey fields. As the values of Humphrey were compared with the original data of Goldmann, all values of the visual field were narrow. Conclusions: The visual fields by Humphrey automated kinetic perimetry were smaller than those by Goldmann perimetry. Therefore, if Humphrey kinetic perimetry is used for the evaluation of visual disability, the visual field should be evaluated after the correction. 목적: 신체장해판정에서 이용되고 있는 골드만 시야계를 험프리 시야계의 동적시야검사로 대체할 수 있는지 알아보기 위해 두 시야계 에 나타난 정상 시야의 범위를 알아보고자 하였다. 대상과 방법: 정상인 35명 70안을 대상으로 골드만과 험프리 시야계의 동적 시야검사를 시행한 후, 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°의 12개 경선의 시야를 비교하였다. 두 검사계간 시야의 최대치를 동일하게 보정하여 비교하였고, McBride 신체장해 판정에서 사용하고 있는 시야와 비교하였다. 결과: 골드만과 험프리 시야계는 비슷한 타원형의 시야를 나타내었지만 골드만 시야계가 조금 넓은 시야를 보였다. 이 값을 McBride의 정상시야와 비교했을 때 양안 모두 험프리 자동시야계의 경우 작은 범위를 나타내고 있음을 알 수 있었다. 결론: 본 연구의 결과는 험프리 시야계의 동적시야검사가 골드만 시야계보다 좁은 시야 범위를 나타내며 신체장해 판정에 험프리 시야 계를 이용할 경우 보정이 필요할 수 있음을 시사한다.

한국어의 시점 (視點)에 관한 연구 : ‘-아서/어서’와 ‘-(으)니까’의 시야 (視野)를 중심으로

정인아 서울대학교 언어교육원 2012 語學硏究 Vol.48 No.3

Language originates with human cognition, and so it is in inseparable relation with the point of view. If the point of view underlies the observation and cognizance of human beings, it should also be reflected in linguistic expressions. However, the point of view has not been explored much in the researches of the Korean language, and the notion hasn’t yet risen to the forefront in studying Korean. Thus, this study proposes that the point of view should be used as an important device for the studying Korean. This study has examined how the point of view can be utilized as a useful tool in brevity, and analyzed the point of view reflected in ‘-아서/어서’ and ‘-(으)니까’ specifically. The notion of visual field, which amounts to the range of the point of view, was used for the analysis. As a result, it has been found out that ‘-아서/어서’ has a narrow visual field, whereas ‘-(으)니까’ has a wide visual field. The narrow visual field, which means ground of the speaker’s sight, and the wide visual field, which means ground of the sight both speaker and listener. In short, my analysis explained that impoliteness can take place in ‘-(으)니까’ of a wide visual field a speaker and a listener have in common, whereas imperatives and requests cannot follow ‘-아서/어서’ of a speaker’s own narrow visual field.

Factors Influencing Visual Field Recovery after Transsphenoidal Resection of a Pituitary Adenoma

이동규,성미선,박상우 대한안과학회 2018 Korean Journal of Ophthalmology Vol.32 No.6

Purpose: This study aimed to analyze the factors influencing visual field recovery after transsphenoidal approach-tumor resection (TSA-TR) in pituitary adenoma patients with visual field defects (VFDs). Methods: We retrospectively evaluated 102 eyes of 102 patients with VFDs induced by pituitary adenomas who underwent TSA-TR between January 2010 and December 2015. All patients had been observed for more than one year. The severity of the VFD in each patient was evaluated using the mean deviation (MD) and pattern standard deviation in the most-affected eye. Clinical and demographic data such as preoperative visual acuity and visual field, age, sex, tumor volume, neurological symptoms at diagnosis, duration of symptoms, patterns of the preoperative VFD, and preoperative central VFD were investigated and analyzed for association with recovery of the visual field. Results: Recovery from VFDs occurred in 71 (69.6%) eyes after a mean period of 18.36 ± 5.21 months. The recovery group was younger (p = 0.003), had higher preoperative MD values (p = 0.016), and had better preoperative visual acuity (p = 0.03), compared with the non-recovery group. Preoperative central VFD (p = 0.006) and preoperative bilateral VFD (p = 0.016) were significantly less frequent in the recovery group. Multivariate logistic regression revealed that age at diagnosis (odds ratio [OR], 0.962; p = 0.022), preoperative MD (OR, 1.069; p = 0.046), preoperative central VFD (OR, 0.212; p = 0.039), and preoperative bilateral VFD (OR, 0.212; p = 0.035) were associated with visual field recovery after TSA-TR. Conclusions: Younger age, higher preoperative MD, and the preoperative abscence of central VFD or bilateral VFD were favorable factors influencing visual field recovery after TSA-TR in patients with pituitary adenomas. An understanding of the associated clinical factors may help predict visual outcomes after TSA-TR in pituitary adenoma patients with VFDs.

Factors Influencing Visual Field Recovery after Transsphenoidal Resection of a Pituitary Adenoma

Dong Kyu Lee,Mi Sun Sung,Sang Woo Park 대한안과학회 2018 Korean Journal of Ophthalmology Vol.32 No.6

Purpose: This study aimed to analyze the factors influencing visual field recovery after transsphenoidal approach- tumor resection (TSA-TR) in pituitary adenoma patients with visual field defects (VFDs). Methods: We retrospectively evaluated 102 eyes of 102 patients with VFDs induced by pituitary adenomas who underwent TSA-TR between January 2010 and December 2015. All patients had been observed for more than one year. The severity of the VFD in each patient was evaluated using the mean deviation (MD) and pattern standard deviation in the most-affected eye. Clinical and demographic data such as preoperative visual acuity and visual field, age, sex, tumor volume, neurological symptoms at diagnosis, duration of symptoms, patterns of the preoperative VFD, and preoperative central VFD were investigated and analyzed for association with recovery of the visual field. Results: Recovery from VFDs occurred in 71 (69.6%) eyes after a mean period of 18.36 ± 5.21 months. The recovery group was younger (p = 0.003), had higher preoperative MD values (p = 0.016), and had better preoperative visual acuity (p = 0.03), compared with the non-recovery group. Preoperative central VFD (p = 0.006) and preoperative bilateral VFD (p = 0.016) were significantly less frequent in the recovery group. Multivariate logistic regression revealed that age at diagnosis (odds ratio [OR], 0.962; p = 0.022), preoperative MD (OR, 1.069; p = 0.046), preoperative central VFD (OR, 0.212; p = 0.039), and preoperative bilateral VFD (OR, 0.212; p = 0.035) were associated with visual field recovery after TSA-TR. Conclusions: Younger age, higher preoperative MD, and the preoperative abscence of central VFD or bilateral VFD were favorable factors influencing visual field recovery after TSA-TR in patients with pituitary adenomas. An understanding of the associated clinical factors may help predict visual outcomes after TSA-TR in pituitary adenoma patients with VFDs.

Objective quantification of the impact of blepharoplasty on the superior visual field

Hyodong Kim,이상훈,손대구,여현정 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.1

Background Blepharoplasty has both aesthetic and functional benefits in patients with pseudoptosis; however, previous studies could not demonstrate its beneficial effects quantitatively and objectively. The authors objectively analyzed the visual field before and after surgery and investigated whether measurements of the visual field can be applied as a suitable predictor of surgical outcomes. Methods In total, 18 eyelids in nine patients with pseudoptosis who had undergone simple skin excision blepharoplasty were evaluated prospectively from February to May 2016. The visual fields were analyzed preoperatively and 3 months postoperatively using the Goldmann kinetic perimetry test. The visual field test area was assessed using Adobe Photoshop. Results Blepharoplasty had an average 4.99-fold beneficial effect on the superior visual field. In particular, more improvement was seen in the superior temporal quadrant than in the nasal quadrant. No correlation was found between the preoperative margin-to-reflex distance 1 (MRD1) and the surgical outcome (P=0.119). However, there was a strong correlation between the preoperative superior visual field and the surgical outcome (P=0.001). Conclusions Using the Goldmann kinetic perimetry test, we objectively and quantitatively proved the beneficial effect of blepharoplasty on patients with pseudoptosis. Furthermore, we demonstrated that the preoperative visual field is a better preoperative surgical outcome predictive factor than the preoperative MRD1.