scholarly journals Scleral Buckling under a Slit-lamp Illumination System with a Contact Wide-angle Viewing Lens Compared with an Indirect Ophthalmoscope

2018 ◽  
Vol 32 (2) ◽  
pp. 126 ◽  
Author(s):  
Seung Yong Choi ◽  
Youlim Lee ◽  
Mirinae Kim ◽  
Young-Hoon Park
Author(s):  
Danang Yoga Wiguna ◽  
Sauli Ari Widjaja ◽  
Wimbo Sasono ◽  
Muhammad Firmansjah ◽  
Ima Yustiarini ◽  
...  

Condensing lens is a lens used as an auxiliary lens in indirect instruments to examines the fundus. This lens is used with binocular indirect ophthalmoscope and slit-lamp biomicroscope to reach a stereopsis image of fundus. Optical principle of condensing lens is to make the eye in myopic condition, so it can producesa real, aerial, inverted and reversed image. This lens was placed between the instruments and the eye of the patient which located closer to patient’s eye. Optimalized position of the lens can produce a good fundus image. Condensing lens have so many power of dioptre that each power produces different magnification and field of view. High powered lenses produces wider field of view than low powered ones. High powered lens can also used in patient with small dilated pupil and shorter distance of examination. Low powered lenses offer more magnification. Fundus examination with binocular indirect ophthalmoscope and slit-lamp biomicroscope have purpose to produces stereopsis image because of the binocularity system. These two instruments have each advantages and disadvantages. The advantages of binocular indirect ophthalmoscope are a portable instrument, relatively can be used in uncooperative patient and it can be used with scleral indentation to reach more peripheral view of the fundus. Meanwhile slit-lamp biomicroscope has the advantages to offer more magnification and flexible illumination system. With higher powered lens use in biomicroscope, it also give advantages in shorter distance of examination and wider field of view.


Author(s):  
Benudhar Mahanand ◽  
Jayakrushna Das

Background: Present study investigated the occurrence of cataract in dogs presented to the Teaching Veterinary Clinical Complex (TVCC) and Department of Veterinary Surgery and Radiology under Odisha University of Agriculture and Technology, Bhubaneswar during a period of four months. During the study period, a total number of 3847 canine cases were registered at TVCC, out of which 23 cases registered under the RKVY project for different types of ophthalmic affections. There were only eight canine cataract cases with overall prevalence of 0.2% among total canines presented to TVCC and 34.78% of total canines presented with some sorts of ophthalmic affections. Methods: Menace reflex, pupillary light reflex, maze test, obstacle test, catoptrics test, Schirmer’s tear test (STT), Schiotz tonometry, Slit lamp bio microscopy and fundus examination -using indirect ophthalmoscope (IO) and fundus camera, were carried out in all the cases studied. Result: Occurrence of cataract was higher in Spitz (50%). Males had more incidences (62.5%) of cataract. The ages of the dogs were less than 10 years. B mode ultra-sonographic (USG) examination revealed increased echogenecity of lens in all cataract affected dogs while corneal opacification was found in two cases. Cataract was extracted by phaco-emulsification in three dogs and by small incision cataract surgery (SICS) technique in one dog.


2016 ◽  
Vol 27 (1) ◽  
pp. 98-103 ◽  
Author(s):  
Hua Yan

Purpose To introduce a modified scleral buckling surgery using noncontact wide-angle viewing system and intraocular illumination in the treatment of rhegmatogenous retinal detachment (RRD) without proliferative retinopathy. Methods A modified scleral buckling surgery using noncontact wide-angle viewing system with a 25-G optic fiber through sclerotomy site was performed in 22 eyes of 22 patients with RRD. Twelve women and 10 men were included. The mean age was 49.23 ± 15.19 years. The mean refraction of myopia was -4 D (range -3 to -7 D). The mean duration of RRD was 6.64 ± 3.14 days. The preoperative best-corrected visual acuity (BCVA) ranged from 0.02 to 0.8. Mean follow-up was 9.59 ± 2.24 months. Proliferative retinopathy was grade A in 8 eyes and grade B in 14 eyes. Results This surgery was performed successfully and retinal attachment was achieved in all eyes at the final follow-up. The postoperative BCVA increased in all eyes. No complication was encountered related to this technique. Conclusions This modified scleral buckling surgery brings a panoramic and upright view and easy surgical maneuvers. It may be an additional approach for the management of RRD.


2017 ◽  
Vol 54 (11) ◽  
pp. 112202 ◽  
Author(s):  
隋成华 Sui Chenghua ◽  
沃圣杰 Wo Shengjie ◽  
徐丹阳 Xu Danyang ◽  
韩勇浩 Han Yonghao ◽  
杜春年 Du Chunnian

2016 ◽  
Vol 37 (1) ◽  
pp. 131-135
Author(s):  
Pei Zhi-qi ◽  
Feng Qi-bin ◽  
Chen Xiao-jing ◽  
Lyu Guo-qiang

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