Acute Myopic Shift after a Single Dose of Acetazolamide: A Case Report and Review of the Literature.

We report the case of a 32-year-old male who presented with an acute myopic shift as a result of uveal effusion following a single administration of 250 mg acetazolamide. The drug was discontinued and following cycloplegia and topical steroid therapy, we observed progressive deepening of the anterior chamber, reopening of the iridocorneal angle, and complete resolution of the myopic shift after 5 days. A literature review since 1956 identified 23 cases, including ours, which developed a myopic shift after a median time of 24 h (3 - 24) following a median dose of 500 mg (125 - 1000) acetazolamide, with about a third complicated by angle closure ocular hypertension. This presumed idiosyncratic reaction can occur without prior drug exposure and independent of the phakic status. Treatment options include systematic drug withdrawal associated with cycloplegia, anti-glaucomatous agents, and/or corticosteroids. Full recovery is achieved within about 5 days (2 - 14). Given the widespread use of acetazolamide, awareness of this idiosyncratic reaction is crucial to avoid complications of acute angle-closure glaucoma.

Suppressive effect of nitric oxide synthase (NOS) inhibitor L-NMMA acetate on choroidal fibrosis in experimental myopic guinea pigs through the nitric oxide signaling pathway.

Myopia is one of the most prevalent eye diseases that seriously threaten the eyesight of children and adolescents worldwide. However, the pathogenesis is still unclear, and effective drugs are still scarce. In the present study, the guinea pigs were randomly divided into a normal control (NC) group, a lens-induced myopia (LIM) group, a NOS inhibitor (L-NMMA) injection group, and a NOS inhibitor solvent phosphate-buffered saline (PBS) group and the animals received relevant treatments. After 2- and 4-week different treatments, we noted that the refraction and choroidal thickness in the LIM group decreased compared with the NC group, whereas the ocular axial length increased significantly, and the choroid showed a fibrotic trend. The expression of NOS1, NOS3, TGF-ß1, COLI, and α-SMA at gene and protein levels was increased significantly in the choroid (all P < 0.05). After intravitreal injection of NOS inhibitor L-NMMA, we found that compared with the LIM group, the refraction and the choroidal thickness significantly increased, whereas the axial length reduced significantly, accompanied by an increase of choroidal thickness and an improvement of choroidal fibrosis. The expression levels of choroidal NOS1, NOS3, TGF-ß, COLI, and α-SMA were significantly reduced (all P < 0.05). In conclusion, the trend of choroidal fibrosis in LIM guinea pigs is positively correlated with the increase in axial length. The NOS inhibitor L-NMMA can alleviate the process of choroidal fibrosis in myopic guinea pigs by inhibiting NO signaling pathway.

Incidence of Adverse Events Induced by Atropine in Myopic Children: A Meta-Analysis.

A large number of studies have evaluated the efficacy of low-dose atropine in preventing or slowing myopic progression. However, it is challenging to evaluate the ocular safety from these studies. We aimed to evaluate the incidence of adverse events induced by atropine in children with myopia. We performed a systematic literature search in several databases for studies published until November 2022. The incidence of adverse events induced by atropine was pooled by a common-effect (fixed-effect) or random-effects model. Subgroup analyses were conducted according to drug doses, types of adverse events, and ethnicity. A total of 31 articles were ultimately included in the study. The overall incidence of adverse events for atropine was 5.9%, and the incidence of severe adverse events was 0.0%. The most commonly reported adverse events were photophobia (9.1%) and blurred near vision (2.9%). Other adverse events including eye irritation/discomfort, allergic reactions, headache, stye/chalazion, glare, and dizziness occurred in less than 1% of the patients. The incidence of atropine-induced adverse events varied depending on the drug doses. A lower dose of atropine was associated with a lower incidence of adverse events. There was no significant difference in the incidence of adverse events for low-dose atropine between Asian and White children. Our study suggests photophobia and blurred near vision are the most frequently reported adverse events induced by atropine. Low-dose atropine is safer than moderate- and high-dose atropine. Our study could provide a safe reference for ophthalmologists to prescribe atropine for myopic children.

The safety and tolerability of levodopa eye drops for the treatment of ocular disorders: A randomized first-in-human study.

Myopia is the leading cause of low vision worldwide and can lead to significant pathological complications. Therefore, to improve patient outcomes, the field continues to develop novel interventions for this visual disorder. Accordingly, this first-in-human study reports on the safety profile of a novel dopamine-based ophthalmic treatment for myopia, levodopa/carbidopa eye drops. This phase I, first-in-human, monocenter, placebo-controlled, double-blind, paired-eye, multidose, randomized clinical trial was undertaken in healthy adult males aged 18-30 years (mean age 24.9 ± 2.7) at the University of Canberra Eye Clinic, Australia. Participants were randomly assigned to receive either a low (1.4 levodopa:0.34 carbidopa [µmoles/day], n = 14) or standard dose (2.7 levodopa:0.68 carbidopa [µmoles/day], n = 15) of levodopa/carbidopa eye drops in one eye and placebo in the fellow eye once daily for 4 weeks (28 days). Over this 4-week trial, and after a 4-month follow-up visit, levodopa/carbidopa treatment had no significant effect on ocular tolerability and anterior surface integrity, visual function, ocular health, refraction/ocular biometry, and did not induce any non-ocular adverse events. These results indicate that topical levodopa/carbidopa is safe and tolerable to the eye, paving the way for future studies on the efficacy of this novel ophthalmic formulation in the treatment of human myopia. The findings of this study have implications not only for the treatment of myopia, but in a number of other visual disorders (i.e., amblyopia, diabetic retinopathy, and age-related macular degeneration) in which levodopa has been identified as a potential clinical intervention.

Retinoid-associated myopia in dermatologic patients: a systematic review.

PURPOSE: Systemic retinoids are among the most prescribed drugs in dermatology, thanks to their activity as proliferation modulators and keratinisation normalisers. Common side effects such as blood lipid disorders, xerosis and photosensitivity are well established and usually dose dependent. Conversely, retinoid-associated ocular disturbances have been reported, yet with differences in terms of frequency and manifestations As data regarding a potential correlation with refractive errors are heterogenous and have not been previously thoroughly addressed, we performed a systematic review of the literature with the aim of comprehensively evaluating the current evidence regarding retinoid-associated myopia in dermatologic patients. MATERIALS AND METHODS: A systematic review of the literature was carried out according to the PRISMA guidelines. A search on MEDLINE, Pubmed, Scopus, Cochrane Library was conducted using the MeSH terms: retinoid, isotretinoin, acitretin, bexarotene, etretinate, alitretinoin, myopia, refractive errors, via the Boolean term AND. Only manuscripts in English were considered, there was no restriction on type of article. Animal research and in vitro studies were excluded. RESULTS: Six articles were finally included in this systematic review. One well designed prospective study was able to show a slight myopic shift in the first six months, but id did not evaluate further development of the refractive error nor the effects of drug discontinuation. Another prospective study, with a smaller sample size showed no myopic progression at 12 months. Two case reports showed a myopic shift after two weeks from therapy start. Another case report showed a myopic shift associated with narrowing of the anterior chamber after one week from therapy start. Finally a large retrospective study based on spontaneous reporting systems and world's literature classified myopia as a certain side effect. CONCLUSION: Considering the current literature, it is not possible to define a clear correlation between the use of retinoids and the development or worsening of myopia. Some studies suggest that retinoids may cause a myopic shift and the pathophysiologyical mechanism is supported by some animal and in vitro studies, but there is a lack of large prospective and well-controlled studies. In case of ocular disturbances after retinoid use a prompt ophthalmological referral is advisable and in case of the detection of a myopic refractive error a relationship to retinoids should be ruled out, considering also other possible causes such as age and previous refractive status.

Topiramate-induced Acute Transient Myopia and Angle Narrowing.

Sulphamate drugs, widely prescribed for various systemic conditions, are reported to have rare ocular adverse-effects, usually within weeks of initiation of treatment. Medical and drug history in such cases are of pivotal importance in reaching a proper diagnosis. This study reports three cases, which developed topiramate-induced ocular side effects. In one of the cases, although the angles were narrow in both eyes, yet intra-ocular pressure (IOP) was not high. Also, in the third case, there were no macular striae. Topiramate was immediately withheld and all cases were improved without any permanent ocular damage. Key Words: Sulphamate, Topiramate, Angle closure glaucoma, Myopia.

Effects of topical pilocarpine on ocular growth and refractive development in rabbits.

PURPOSE: This study aimed to investigate whether topical pilocarpine affects ocular growth and refractive development as well as the underlying biochemical processes in early eye development in rabbits. METHODS: Twenty three-week-old New Zealand white rabbits were treated with 0.5% pilocarpine in the right eye for 6 weeks. The left eyes served as contralateral controls. The effects of pilocarpine on refractive error, corneal curvature and ocular biometrics were assessed using streak retinoscopy, keratometry, and A-scan ultrasonography, respectively. Eyeballs were enucleated for histological analysis. The ciliary body and sclera were homogenized to determine the mRNA and protein expression levels of five subtypes of muscarinic receptors. RESULTS: Compared to control eyes, pilocarpine-treated eyes exhibited approximately -1.63 ± 0.54 D myopia accompanied by a 0.11 ± 0.04 mm increase in axial length (AL) (p < 0.001, respectively). The anterior chamber depth (ACD) was reduced, whereas the lens thickness (LT) and vitreous chamber depth (VCD) increased (p < 0.001, respectively). Corneal curvature decreased over time but was not significantly different between treated and control eyes. The mRNA and protein expression levels of five subtypes of muscarinic receptors were upregulated in the ciliary body and downregulated in the sclera. CONCLUSIONS: Based on these results, pilocarpine can induce myopic shift, increase LT, elongate VCD and AL, and reduce muscarinic receptor expression in the sclera early in development. These changes raise the possibility that pilocarpine may promote axial elongation in ocular development and facilitate the emmetropization of hyperopic eyes.

Effect of isotretinoin on myopia and axial length: a pilot study.

PURPOSE: To investigate the effect of oral isotretinoin use on refractive error, axial length, and anteroposterior segment parameters. MATERIALS AND METHODS: In this prospective study, 50 eyes of 50 patients using isotretinoin with a diagnosis of acne vulgaris and 50 eyes of 50 healthy control subjects were included. After detailed biomicroscopy, measurements were taken of axial length, lens thickness, central corneal thickness, anterior chamber depth, central retinal thickness, and subfoveal choroidal thickness. The pupils of both eyes were dilated with one drop of cycloplegic drops after refraction measurement. Visual acuity examination was performed with a Snellen chart the next day. The same procedure was repeated at the end of the third and sixth month of drug treatment. RESULTS: Forty-seven patients with acne vulgaris and 45 healthy controls met the inclusion criteria and were included in the analysis. The mean ages of the patients and the controls were 21.7 ± 2.5 years (range, 18-28 years) and 22.6 ± 2.7 years (range, 19-27 years), respectively. No significant changes were observed in any parameters in the third and sixth month in the control group (p > 0.05). The most important result was significant increases in myopia and axial length in the sixth month of isotretinoin use (p = 0.01, p = 0.04, respectively). There were no significant relationships between increases in myopia and axial length and patients' age, sex, drug dose, and initial refraction (p > 0.05). The changes in spherical equivalent and axial length differed significantly between the drug group and the control group (p = 0.001, p = 0.001, respectively). CONCLUSIONS: Isotretinoin is one of the important molecules in the aetiology of myopia. Oral isotretinoin treatment may increase myopia and axial length, although not to a clinically significant degree. However, as this was a pilot study, there is a need for further studies with more patients and longer follow-up periods.

Acute bilateral myopia induced by Triplixam: a case report.

BACKGROUND: Side effects of the systemic drugs used to treat eyes are not common. Triplixam is used to treat systemic hypertension and contains amlodipine, indapamide and perindopril arginine as active ingredients which might have induced the sudden myopia. The transient myopia with objective findings disappeared after the discontinuation of the drug. CASE PRESENTATION: A 33-year-old male presented to the emergency department with a history of blurred vision in both eyes. Development of myopia, lens thickening, choroidal effusion and retinal striae at the macula with the increase in macular thickness was observed in both eyes. These symptoms cleared completely after the drug was discontinued. Myopisation could have been caused by lens thickening and changing its refractive index as a result of allergic or idiosyncratic reaction of the ciliary body. Retinal striae may be caused by the volume effect of the choroidal effusion. CONCLUSION: Our report describes the adverse effect of Triplixam, probably resulting from its ingredient indapamide. Although indapamide is a common drug used in the treatment of systemic hypertension, it is important for cardiologists, general practitioners and other physicians to be aware of the possible adverse effect of Triplixam.

Case Report: Transient Myopic Shift and Other Sequelae in Response to Adverse Reaction to Sulfamethoxazole-trimethoprim.

SIGNIFICANCE: There are several isolated reports of systemic medications or medical conditions that can cause acute transient myopic shifts along with other ocular sequelae, but rarely has this been reported for the combination antibiotic sulfamethoxazole-trimethoprim. PURPOSE: This case illustrates a rarely seen condition that may result from treatment with sulfamethoxazole-trimethoprim and result in serious, vision-threatening conditions. These can be treated by immediate discontinuation of the drug, steroids, ocular hypertensive medication, and cycloplegia, depending on the circumstances. CASE REPORT: A 20-year-old woman presented complaining of blindness upon waking. She had been experiencing fever, malaise, and significant abdominal pain for weeks. Blood culture revealed infection with Staphylococcus aureus and Escherichia coli for which she was prescribed sulfamethoxazole (800 mg) and trimethoprim (160 mg) twice daily. After a week of treatment, she awoke unable to see. Examination revealed narrowed angles, bilateral 6-D myopic shift, macular folding with scattered microaneurysms, and intraretinal hemorrhages with mild macular edema and field defects. The condition resolved with discontinuation of the drug and use of steroids, ocular hypertensive, and cycloplegic agents. Her visual acuity returned to near normal within 3 days. Resolution of macular edema, field defects, and hemorrhages followed. CONCLUSIONS: An adverse reaction possibly caused by sulfamethoxazole-trimethoprim is described causing ciliochoroidal effusion resulting in acute myopic shift and other sequelae. Successful treatment is demonstrated, and implications are discussed.

Angiographic features of drug-induced bilateral angle closure and transient myopia with Ciliochoroidal effusion.

BACKGROUND: To report five cases of acute drug-induced angle closure and transient myopia with ciliochoroidal effusion and to analyze angiographic findings of these cases. METHODS: This study is an observational case series. Five patients with acute drug-induced angle closure and transient myopia with ciliochoroidal effusion were examined by fluorescein angiography, indocyanine green angiography (ICGA) and ultrasound biomicroscopy (UBM). RESULTS: Five patients presented with bilateral visual loss and ocular pain after intake of topiramate, methazolamide, phendimetrazine tartrate or mefenamic acid. All patients showed elevated intraocular pressure (IOP) with shallow anterior chamber and myopic shift from - 0.5 to - 17.0 diopters (D). UBM showed ciliochoroidal effusions with diffuse thickening of the ciliary body in all cases. Rapid normalization of IOP and decrease of myopic shift occurred in all patients after discontinuing the suspected drugs. We classified the ICGA findings into 2 major signs (hypofluorescent dark spots, hyperfluorescent pinpoints) and 3 minor signs (diffuse choroidal hyperfluorescence, early hyperfluorescence of choroidal stromal vessel, and leakage and dilated retinal vessels). CONCLUSIONS: The pathogenesis of acute drug-induced angle closure and transient myopia with ciliochoroidal effusion may be idiosyncratic reaction of uveal tissue to systemic drugs. Accumulation of extravascular fluid in the ciliochoroidal layer had a major role in the pathogenesis. ICGA could be a useful method to examine the pathophysiology of this condition by imaging of the choroidal layer.

Sustained scleral stiffening in rats after a single genipin treatment.

Scleral stiffening has been proposed as a therapy for glaucoma and myopia. Previous in vivo studies have evaluated the efficacy of scleral stiffening after multiple treatments with a natural collagen crosslinker, genipin. However, multiple injections limit clinical translatability. Here, we examined whether scleral stiffening was maintained after four weeks following a single genipin treatment. Eyes from brown Norway rats were treated in vivo with a single 15 mM genipin retrobulbar injection, sham retrobulbar injection, or were left naive. Eyes were enucleated either 1 day or four weeks post-injection and underwent whole globe inflation testing. We assessed first principal Lagrange strain of the posterior sclera using digital image correlation as a proxy for scleral stiffness. Four weeks post-injection, genipin treatment resulted in a 58% reduction in scleral strain as compared to controls (p = 0.005). We conclude that a single in vivo injection of genipin effectively stiffened rat sclera for at least four weeks which motivates further functional studies and possible clinical translation of genipin-induced scleral stiffening.

Non-prescription cold and flu medication-induced transient myopia with uveal effusion: case report.

BACKGROUND: To report a case of non-prescription cold and flu medication-induced transient myopia with uveal effusion. CASE PRESENTATION: Bilateral high intraocular pressure, shallow anterior chambers, uveal effusion, and a myopic shift were encountered in a 39-year-old Chinese male 1 night after taking a non-prescription flu medicine three times than the recommended dose. Ultrasound biomicroscopy (UBM) showed bilateral ciliochoroidal effusions, disappearance of the ciliary sulcus, closure of the angle of the anterior chamber, and anterior displacement of the lens-iris diaphragm. Treatment with aqueous suppressants was given. Within a week, the uncorrected vision restored, and the myopia had disappeared. UBM revealed major resolution of the ciliochoroidal effusions in both eyes, deepening of the anterior chamber, return of the lens-iris diaphragm to a more posterior position. CONCLUSIONS: Overdose of non-prescription cold and flu medication may cause bilateral uveal effusions inducing acute angle-closure glaucoma and acute myopia.

Contribution of the Visante® OCT and B-scan ultrasound in the diagnosis and follow up of a topiramate-induced bilateral ciliochoroidal effusion syndrome. / Aportes de la tomografía de coherencia óptica Visante® y la ecografía ocular en el diagnóstico y seguimiento del síndrome de efusión ciliocoroideo bilateral secundario a topiramato.

A 45 year-old man with bilateral acute angle-closure and myopia after starting treatment with topiramate, secondary to alcohol and heroin dependence. Using Visante® OCT (Optical Coherence Tomography) and B-scan Ultrasound he was diagnosed with bilateral ciliochoroidal effusion as the pathophysiological mechanism. Topiramate was stopped and ocular hypotensive therapy with a topical cycloplegic and corticosteroids were started, resolving ciliochoroidal effusion syndrome. Visante® OCT and B-scan Ultrasound are useful tools for the diagnosis and follow-up of patients with acute angle-closure and myopia due to topiramate. As a result of broad spectrum of indications for topiramate, physicians and ophthalmologists should be aware of the possible ophthalmological manifestations attributable to this drug.

Acute narrow-angle glaucoma induced by topiramate with acute myopia and macular striae: A case report. / Glaucoma agudo de ángulo cerrado inducido por topiramato con miopización aguda y estrías maculares: a propósito de un caso.

We report the case of a 29-year-old epileptic woman who had been on treatment with topiramate 25mg/day for 9 days. She was referred to the Emergency Department due to reduction in far visual acuity (VA) after increasing the dose to 50mg/day two days before. The ocular examination showed bilateral acute angle closure glaucoma (AACG) and macular striae in both eyes (AO) observed by Retinography and Optical Coherence Tomography (OCT). The AACG is a well-known side effect of topiramate, but the macular striae rarely accompanies it. Although macular striae have been previously described in other cases, very few document those using retinography and OCT images. Therefore, it is important to differentiate a case of AACG induced by topiramate from a case of primary AACG, since they differ in their clinical presentation, mechanism of action, and treatment. Mismanagement can have potentially serious consequences.

ACUTE MYOPIA WITH ELEVATION OF INTRAOCULAR TENSION AS AN ADVERSE SIDE EFFECT OF ANTIDEPRESSANT MEDICATION.

CASE-REPORT: The author presents case report of acute induced myopia with mild intraocular pressure elevation by young patient using trazodone. The presentation is completed with the documentation of anterior chamber depth and angle changes by using and after discontinuation of trazodone. CONCLUSION: Acute transient myopia may be rare side effect of systemic used drugs in predisposed patients. Early and correct diagnosis is very important, because induced myopia may be accompanied by acute angle-closure glaucoma or supraciliary choroidal effusion. The only correct treatment in this case is discontinuation of the drug. Key words: acute angle-closure glaucoma, acute myopia, antidepressants, side effects, trazodone.

CEFALIUM-INDUCED BILATERAL TRANSIENT MYOPIA, RETINAL FOLDS, AND FOCAL CHOROIDAL DELAY.

PURPOSE: To describe a case of acute bilateral transient myopia, retinal folds, and island of choroidal delay associated with oral administration of Cefalium, a medication commonly prescribed in Brazil for migraine that combines acetaminophen 500 mg, caffeine 40 mg, dihydroergotamine mesylate 1 mg, and metoclopramide hydrochloride 10 mg. METHODS: A 21-year-old woman with bilateral blurred vision 1 day after the use of Cefalium. The main outcomes measures were BCVA, ocular fundus, ocular coherence tomography, and angiography findings. RESULTS: The patient developed bilateral myopia, retinal folds, and focus choroidal delay 1 day after the administration of oral cefalium. Ocular fundus examination and ocular coherence tomography revealed retinal folds in the internal surface of the retina. Angiography showed focus areas of hypofluorescence in both eyes. Seven days after Cefalium was suspended, all clinical symptoms had resolved, with full recovery from the abnormal findings on ocular fundus, ocular coherence tomography, and angiography. CONCLUSION: This is the first report that identified and described bilateral transient myopia, retinal folds, and focus choroidal delay secondary the use of Cefalium.