فهرست مطالب
Journal of Ophthalmic and Optometric Sciences
Volume:3 Issue: 2, Spring 2019
- تاریخ انتشار: 1400/07/21
- تعداد عناوین: 7
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Pages 1-9Purpose
To compare visual outcomes and complications of iris fixated and scleral fixated intra ocular lens (IOL) implantation in patients suffering from traumatic cataract with no proper capsular support.Patients and
MethodsThis prospective interventional study was performed in Farabi Eye Hospital, Tehran, Iran, between May 2015 and May 2016. Twenty five patients with traumatic cataract and no proper capsular support for IOL implantation in the bag or sulcuswere included and randomly underwent either iris fixated or sulcus fixated IOL implantation. Follow up visits were performed one day, one week, four weeks, three months and six months after surgery. In each visit visual acuity, intra ocular pressure, placement of IOL and anterior chamber reaction were studied.
ResultsThirteen eyes of 13 patients underwent iris fixation and 12 eyes of 12 patients underwent scleral fixation of IOL. The average patient age at presentation was 29.12 ± 16.32. In the follow up visit one week after IOL fixation three patients in each group had significant anterior chamber inflammation. There was no statistically significant difference between the two groups regarding the number of patients with elevated IOP (P = 0.96), dislocated IOL (P = 0.480) and complications such as wound dehiscence and iridocorneal adhesion. Also no statistically significant difference regarding the mean BCVA three months after surgery was observed (P = 0.55).
ConclusionWe did not observe any significant difference in outcome of iris and scleral fixation of IOL in traumatic eye injuries with no effective capsular support.
Keywords: Trauma, cataract, Iris, Lenses, Intraocular, Sclera -
Pages 10-15Purpose
To evaluate a new method of inferior oblique muscle myectomy with displacement of the external rectus muscles on both sides for correction of exotropia V pattern with severe inferior oblique muscle overaction.Patients and
MethodsIn a pilot study, 9 patients with exotropia V pattern strabismus who were referred to Al-Zahra Ophthalmology Hospital, Tehran, Iran, in 2011 were studied in two randomly divided groups: group A underwent conventional surgical treatment including external rectus resection and inferior oblique weakening and in addition received external rectus displacement upwards while group B only received the conventional treatment.
ResultsThe mean V pattern before surgery in group A was 41±16.7 prism diopters which changed to 6 ± 10.7 prism diopters after surgery. The mean V pattern before surgery in group B was 37.2 ± 4.3 prism diopters which changed to 19.5 ± 3.1 prism diopters after surgery. In group A, V-pattern correction was 35.0 ±11.6 prism diopters while it was 20.2 ± 1.2 prism diopters in group B, which indicated a statistically significant difference between the two groups (P = 0.04).
ConclusionOur results suggest that the mean V Pattern correction among patients undergoing our modified surgical method was significantly higher than the conventional method. Further comparative studies with a higher number of participants are suggested to confirm our results.
Keywords: Exotropia, Myectomy, Treatment, Surgery -
Pages 16-20Purpose
To evaluate the effect of intravitreal bevacizumab monotherapy on refractive and biometric parameters among patients with central retinal vein occlusion (CRVO), branch retinal vein occlusion (BRVO) or clinically significant macular edema (CSME). Patients and
MethodsThis prospective study included patients aged between 35-50 years who received a single dose intravitreal injection of bevacizumab in Khatam-Al-Anbia eye hospital, Mashhad University of Medical Sciences, Mashhad, Iran, from 2015 to 2017. Dry and cycloplegic refraction, visual function, accommodative amplitude, keratometry results, axial length, anterior chamber depth, lens thickness, vitreous length and central corneal thickness, before and 1 and 3 months after injection were evaluated and compared.
ResultsTwenty seven patients (fifteen females and twelve males) entered the study with the mean age of 45.18 ± 2.68 years. The mean best corrected visual acuity (BCVA) of patients improved significantly (P = 0.006) three months post injection compared to before injection. No statistically significant difference was observed between the refractive parameters (dry and cycloplegic refraction), accommodative amplitude, biometric parameters including keratometry, axial length, and lens thickness, before and 1 or 3 months after injection.
ConclusionBased on our findings bevacizumab monotherapy improved the mean BCVA among patients with CRVO, BRVO, or CSME, but had no significant effect on refractive and biometric parameters of the treated eyes up to 3 months after injection.
Keywords: Bevacizumab, Refractive, Biometry, keratometry -
Evaluation of the Effect of Oral Vitamin B1 on Pain Due to Corneal Neuropathy after Cataract SurgeryPages 21-32Introduction
Cataracts are the leading cause of low vision and blindness in the world, and the only effective treatment for cataract vision impairment is surgery, which has common complications such as eye pain and burning, inflammation, and postoperative headache. The aim of this study was to evaluate the effect of vitamin B1 on oral pain on corneal neuropathy after cataract surgery in Jiroft.
Method and MaterialsThis randomized clinical trial study was performed on cataract patients who were candidates for surgery and referred to Imam Khomeini Hospital in Jiroft in 2020. Demographic information was collected through a designed checklist and the Numerical Pain Scale (NRS) was used to measure postoperative severity in the eye. The collected data were analyzed using SPSS-V21 software.
ResultsIn this study, 130 patients with cataracts (intervention group: 65 and control group: 65) were studied. The intervention group consisted of 27 men (41.5 %) and 38 women (58.5 %) and the control group consisted of 25 men (38.5 %) and 40 women (61.5 %). On the third day and one week after surgery, there was no significant difference in the amount of eye pain and irritation caused by surgery in the intervention and control groups, and in the three months after surgery, the intervention group had mild eye pain and irritation.
ConclusionThe results of this study showed that taking vitamin B1 orally affects eye irritation and pain caused by corneal neuropathy after cataract surgery and reduces eye irritation and pain intensity during 3 months.
Keywords: Cataract, Oral vitamin B1, Pain due to, corneal neuropathy -
Pages 33-36Purpose
To report a patient with avascular bleb after trabeculectomy who showed promising results after subconjunctival erythropoietin injection.
Case Report:
A 45-year-old woman with the diagnosis of primary open-angle glaucoma and history of trabeculectomy three years prior was admitted to our center. The corrected distance visual acuity (CDVA) was 20/20 in both eyes. Her ocular examination revealed an avascular and cystic bleb in the right eye. Seidel test was negative while bleb sweating was observed after fluorescein staining of the bleb area. Intraocular pressure (IOP) was 5 mmHg in the right eye. Erythropoietin (2000 unit in 0.1 ml) was injected subconjuctivally around the bleb area in the temporal quadrant. Six weeks after the injection, the bleb area just superior to the conjunctiva showed an increased fibrosis formation while the IOP remained the same as before injection.
ConclusionErythropoietin might play a role in preventing the progression of a cystic avascular or hypovascular bleb to a leaking bleb.
Keywords: Erythropoietin, Bleb, Leakage, Glaucoma, Open-angle -
Pages 37-41Purpose
To report the clinicopathological features of a rare case of subconjunctival myolipoma and its treatment results.
Case Report:
A 17-year-old female patient referred to our center with a white-pink mass in her left upper bulbar conjunctiva. The lesion extended to the forniceal conjunctiva. The patient had otherwise normal complete ocular examinations and underwent complete surgical excision of the mass due to cosmetic concerns. The tumor was examined with light–microscopy, following hematoxylin and eosin (H&E), Masson-trichrome, and immunohistochemical (IHC) staining. A definite diagnosis of subconjunctival myolipoma was acheived following the pathological assessment. Six months postoperatively, no tumor recurrence was noted, and ocular examinations were within normal limits.
ConclusionTo date, only a few cases of orbital myolipoma have been reported in the literature. To the best of our knowledge, the current manuscript is the first report of subconjunctival myolipoma in the English literature. A straightforward diagnosis is possible through pathological assessment of the excised tumor and surgical treatment shows good results
Keywords: Orbital, Myolipoma, Subconjunctival -
Pages 42-51
Intraocular pressure (IOP) elevation is a well-known complication after pars plana vitrectomy with or without tamponade. The mechanism of increase in IOP can be open angle, closed angle or both. Oxidative stress is hypothesized to have a significant role in the pathogenesis of post vitrectomy elevated IOP and the presence of the lens probably has a protective role. The use of silicone oil and intraocular gases as tamponade is related to higher risk of post-operative elevated IOP. Anti-inflammatory agents, mydriatics, anti-glaucoma medications especially aqueous suppressants, glaucoma surgery and laser procedures might be used for controlling post vitrectomy elevated IOP. Glaucoma shunt implantation and cyclodestructive procedures are the most important surgeries performed for treatment of uncontrolled intraocular pressure after vitrectomy.
Keywords: Intraocular pressure, Pars plana, Vitrectomy, Review