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Background: Topiramate, is an oral sulfonamide medication that is increasingly used for treating headache. We report a rare case of bilateral myopia and acute, secondary angle closure glaucoma following use of topiramate.
Case history: A 33 year-old woman, who referred to emergency ward of Alavi hospital in Ardabil, with bilateral painful loss of visual acuity following one week after starting topiramate. Her uncorrected visual acuity was two meter counting finger in both eyes. The patient had complete vision before administration of topiramate. At present, the eye refractive error was -6.00 diopters.The right and left intraocular pressure was 50 mm Hg OD and 45 mmHg OS respectively. Slit examination revealed conjunctival injection, corneal edemaand shallow anterior chambers. The patient had a history of taking topiramate tablets one week earlier. Topiramate was discontinued and she was treated with anti-glaucoma and cycloplegic drugs. Intraocular pressure and refractive errors were normalized within 3 days and 2 weeks, respectively.
Conclusion: Topiramate can cause acute angle-closure glaucoma and myopia even at low doses or for a short period usage.
 

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Background & objectives: Cataract is the most common cause of blindness in the world and it is estimated that about 100,000 cataract surgeries are performed annually in Iran. The aim of the present study was to determine the prevalence of different morphological types of cataract and some related causes in patients undergoing surgery at Noor Surgery Center in Ardabil.
Methods: This descriptive cross-sectional study was performed on 780 patients referred to the Noor ophthalmology clinic in Ardabil with cataract diagnosis. The data were collected using a checklist by the researcher. Data analysis was performed using SPSS 25 software and descriptive statistical methods.
Results: Of the 1,018 eyes (780 patients), 590 eyes (58%) were related to women and 428 eyes (42%) were related to men and the mean age of all patients was 65.88±11.43. the mean grade of posterior  subcapsular cataract (PSC), nuclear and cortical cataracts were 4.56±0.62, 4.79±0.89 and 4.21±0.48 respectively. There was a significant difference between normal retina diabetics (p=0.034), pseudo exfoliation syndrome (PEX) (p=0.001), hyperopic (p=0.008), corneal opacity (p=0.036) and patients with nasolacrimal duct obstruction (NLDO) (p=0.032) and other patients in terms of cataract type (p=0.034). There was no significant relationship between other comorbidities and cataract type.
Conclusion:According to the results of the present study based on the significant relationship of some diseases with different morphological types of cataracts, accurate preoperative
evaluation and planning for associated comorbidities is recommended.