The purpose of this investigation was directed to propose sensitive, accurate and reproducible methods of analysis that can be applied to determine distigmine bromide (DTB), cyclopentolate hydrochloride (CPHC), diaveridine hydrochloride (DVHC) and tetrahydrozoline hydrochloride (THHC) drugs in pure form and pharmaceutical preparations via charge-transfer complex formation with 7,7,8,8-tetracyan...

The maintenance of mydriasis and the control of postoperative pain and inflammation are critical to the safety and success of cataract and intraocular lens replacement surgery. Appropriate mydriasis is usually achieved by topical and/or intracameral administration of anticholinergic agents, sympathomimetic agents, or both, with the most commonly used being cyclopentolate, tropicamide, and pheny...

Case report A 60-year-old non-insulin dependent diabetic man gave a history of uneventful left eye extracapsular cataract extraction and intraocular lens (IOL) implantation in the middle of December 1992. Four months earlier, he had undergone IOL surgery in the right eye. He had recovered well, when he accidentally injured his left eye with a branch of a tree 6 weeks after surgery. He reported ...

Comment A number of cases of bilateral acute angle closure glaucoma associated with HIV have been reported.I The mechanism of angle closure is thought to be due to anterior rotation of the irislens diaphragm at the axis of the scleral spur secondary to an anterior uveal effusion. Cyclopentolate retracts the iris lens diaphragm posteriorly and therefore opens the angle. Relative pupillary block ...

purpose: to compare the effectiveness of pencil pushup training (ppt) versus office-based vision therapy in patients with convergence insufficiency. method: sixty students of zahedan medical university with convergence insufficiency were randomly selected. after determining refractive error (by retinoscopy using cyclopentolate 1%, if needed), near point of convergence (by millimeter ruler), nea...

objective: this research was conducted to evaluate the prevalence of diabetic retinopathy (dr) in patients who were unaware of their eye condition. materials and methods: a descriptive cross-sectional study was performed in a 12-month period on patients who were referred to meybod imam sadegh diabetes center. 152 patients who had no eye complaint were selected. pupil dilation was created by cyc...

Purpose To evaluate the effect of intracameral phenylephrine/ketorolac (1%/0.3%) during cataract surgery on the use of iris fixation ring and surgical time in patients with poor pupil dilation (≤5.0 mm) or intraoperative floppy iris syndrome (IFIS). Setting Private practice outpatient surgical center. Design This retrospective analysis was conducted from January 1, 2014 to October 7, 2015. ...

Aim—To explore why emmetropisation fails in children who have strabismus. Methods—289 hypermetropic infants were randomly allocated spectacles and followed. Changes in spherical hypermetropia were compared in those who had strabismus and those who did not. The eVect of wearing glasses on these changes was assessed using t tests and regression analysis. Results—Mean spherical hypermetropia decre...

Corneal collagen crosslinking (CCC)with riboflavin/ ultraviolet-A (UV-A) is a new therapeutic technique designed to strengthen the cornea and arrest progressive corneal ectasia. Few complications have been reported following this therapy. We report the case of a 40-year-old patient who had CCC for progressive keratectasia secondary to keratoconus. The patient had no medical history of systemic ...