Ophthalmic surgery and lasers最新文献_第10页

Ultrasound biomicroscopy of corneal hydrops in Terrien's marginal degeneration. teren边缘变性角膜积液的超声生物显微镜观察。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-10

A. Berrocal, P. Chen, S. Soukiasian

引用次数: 7

An investigation of CO2 laser scleral buckling using moiré interferometry. 用激光干涉法研究CO2激光巩膜屈曲。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-09

S. Maswadi, P. Dyer, D. Verma, Wadah Jalabi, D. Dave

{"title":"An investigation of CO2 laser scleral buckling using moiré interferometry.","authors":"S. Maswadi, P. Dyer, D. Verma, Wadah Jalabi, D. Dave","doi":"10.3928/1542-8877-20020501-09","DOIUrl":"https://doi.org/10.3928/1542-8877-20020501-09","url":null,"abstract":"BACKGROUND AND OBJECTIVE\u0000To demonstrate suitability of moiré interferometry to assess and quantify laser-induced shrinkage of scleral collagen for buckling procedures.\u0000\u0000\u0000MATERIALS AND METHODS\u0000Scleral buckling of human cadaver eyes was investigated using a Coherent Ultrapulse CO2 laser. Projection moiré interferometry was employed to determine the out-of plane displacement produced by laser exposure, and in-situ optical microscopy of reference markers on the eye was used to measure in-plane shrinkage.\u0000\u0000\u0000RESULTS\u0000Measurements based on moiré interferometry allow a three dimensional view of shape changes in the eye surface as laser treatment proceeds. Out-of-plane displacement reaches up to 1.5 mm with a single laser spot exposure. In-plane shrinkage reached a maximum of around 30%, which is similar to that reported by Sasoh et al (Ophthalmic Surg Lasers. 1998;29:410) for a Tm:YAG laser.\u0000\u0000\u0000CONCLUSION\u0000The moiré technique is found to be suitable for quantifying the effects of CO2 laser scleral shrinkage and buckling. This can be further developed to provide a standardized method for experimental investigations of other laser sources for scleral shrinkage.","PeriodicalId":19509,"journal":{"name":"Ophthalmic surgery and lasers","volume":"70 1","pages":"221-7"},"PeriodicalIF":0.0,"publicationDate":"2002-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78708953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CLINICAL GLAUCOMA MANAGEMENT: CRITICAL SIGNS IN DIAGNOSIS AND THERAPY 青光眼的临床治疗:诊断和治疗的关键体征

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-22

P. Harasymowycz

引用次数: 0

Experimental photodynamic effects of hypocrellin A on the choriocapillaris. 下丘脑素A对绒毛膜毛细血管的实验性光动力学效应。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-07

B. Khoobehi, Robert Grinstead, E. Passos

{"title":"Experimental photodynamic effects of hypocrellin A on the choriocapillaris.","authors":"B. Khoobehi, Robert Grinstead, E. Passos","doi":"10.3928/1542-8877-20020501-07","DOIUrl":"https://doi.org/10.3928/1542-8877-20020501-07","url":null,"abstract":"OBJECTIVE\u0000To investigate the use of the photosensitizer hypocrellin A as a photodynamic agent to occlude the choriocapillaris in the eyes of pigmented rabbits.\u0000\u0000\u0000METHODS\u0000Hypocrellin A (500 microg/kg) incorporated into liposomes was injected intravenously in pigmented rabbits. Ten to 15 minutes later, the retinas were irradiated with a dye laser (spot size, 2 mm; 10-60 mW; 10-60 seconds; fluences 3.2 to 95.5 J/cm2) at two wavelengths: yellow (568 nm) and red (647 nm). Fluorescein angiography was performed 2 and 24 hours later. Parallel controls were irradiated without a photosensitizer. Histology was performed immediately after the 24-hour angiogram. observed 24 hours after PDT in eyes subjected to yellow laser irradiation at 20 mW for 60 seconds (fluence, 38.2 J/cm2) and at higher powers for lesser durations: 30 mW for 40 seconds (fluence, 38.2 J/cm2), 40 mW for 20 seconds (fluence, 25.4 J/cm2), and 50 and 60 mW for 10 seconds (fluences, 15.9 and 19.1 J/cm2, respectively). Light microscopy showed occlusion of the choriocapillaris in all eyes with angiographic responses. Control eyes and eyes irradiated with the red laser revealed no angiographic or histologic changes.\u0000\u0000\u0000CONCLUSION\u0000Photodynamic therapy using liposomal hypocrellin A and the yellow laser of 568 nm was effective in occluding the choriocapillaris of pigmented rabbits.","PeriodicalId":19509,"journal":{"name":"Ophthalmic surgery and lasers","volume":"14 1","pages":"207-13"},"PeriodicalIF":0.0,"publicationDate":"2002-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83641722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Extrusion and fragmentation of hydrogel exoplant 11 years after scleral buckling surgery. 巩膜屈曲术后11年水凝胶外植体的挤压和碎裂。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-14

Takumi Kawano, M. Doi, M. Miyamura, K. Esaki, M. Sasoh, Y. Uji

引用次数: 13

Scleral fixation of a foldable intraocular lens. 可折叠人工晶状体的巩膜固定。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-19

A. Michaeli-Cohen, D. Rootman

引用次数: 11

Filtering bleb modification with a THC:YAG (Holmium) laser. THC:YAG(钬)激光滤泡改性。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-03

A. Iwach, M. E. Delgado, M. Adachi, M. Makarewycz, P. Wong, N. Nguyen

引用次数: 4

Results of vitrectomy in Terson syndrome. 玻璃体切除术治疗Terson综合征的结果。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-05

T. Sharma, L. Gopal, J. Biswas, M. Shanmugam, P. Bhende, R. Agrawal, N. Shetty, N. Sanduja

引用次数: 28

Hyperbaric oxygen therapy reduces visual field defect after macular hole surgery. 高压氧治疗可减少黄斑裂孔术后视野缺损。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-06

Akiko Mera Kurok, T. Kitaoka, H. Taniguchi, T. Amemiya

{"title":"Hyperbaric oxygen therapy reduces visual field defect after macular hole surgery.","authors":"Akiko Mera Kurok, T. Kitaoka, H. Taniguchi, T. Amemiya","doi":"10.3928/1542-8877-20020501-06","DOIUrl":"https://doi.org/10.3928/1542-8877-20020501-06","url":null,"abstract":"BACKGROUND AND OBJECTIVE\u0000One of the serious complications that may arise after macular hole (MH) surgery is a temporal visual fields (TVF) defect. We hypothesized that hyperbaric oxygen (HBO) therapy improves the visual field (VF) in these patients.\u0000\u0000\u0000MATERIALS AND METHODS\u0000Vitrectomy for MH was performed on 73 eyes from 1994 to 1997. TVF defect was detected in 19 eyes and, of that 19, 12 patients were followed. Seven patients were treated with HBO therapy and 5 were controls. HBO was performed for approximately 110 minutes a day with 100% oxygen inhalation and a maximum of 2.8 atmospheric pressure. This continued for 20 days. The preoperative VF determined by kinetic perimetry was considered to be 100%, and the VF following HBO therapy was compared with that standard.\u0000\u0000\u0000RESULTS\u0000We detected VF defect (postoperative VF area average 71.9+/-12.8% of the preoperative VF). In all 5 patients who had no HBO therapy, TVF defects remained, while the TVF recovered remarkably in all patients treated with HBO therapy. The VF recovered to 81.7+/-16.7% of the preoperative VF after 3 days of HBO, and to 91.6+/-15.8% months after HBO therapy.\u0000\u0000\u0000CONCLUSION\u0000We speculated that the cause of TVF defect is likely to be chorioretinal circulation disturbance during surgery, and that HBO activates the retinal cells and improves VF. We conclude that HBO is useful in the treatment of TVF defect after macular hole surgery.","PeriodicalId":19509,"journal":{"name":"Ophthalmic surgery and lasers","volume":"102 1","pages":"200-6"},"PeriodicalIF":0.0,"publicationDate":"2002-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87306917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Congenital cystic eyeball. 先天性囊肿性眼球。

Ophthalmic surgery and lasers Pub Date : 2002-05-01 DOI: 10.3928/1542-8877-20020501-21

U. Raina, Deven Tuli, R. Arora, D. K. Mehta, R. Bansal

引用次数: 5