Bilateral acute iris transillumination following a fumigation therapy: a village-based traditional method for the treatment of ophthalmomyiasis

Selective Laser Trabeculoplasty (SLT) for IOP Control in a Patient with Bilateral Acute Iris Transillumination (BAIT)

INTRODUCTION

Bilateral acute iris transillumination (BAIT) is a clinical condition characterized by acute bilateral loss of iris pigment epithelium and iris transillumination. Because of the similar presentation, it is commonly confused with anterior uveitis, making it an important differential diagnosis for this condition.

CASE DESCRIPTION

We report the case of a 60-year-old male patient who presented all the characteristics of BAIT after undergoing systemic treatment with moxifloxacin and that had the intraocular pressure (IOP) successfully controlled with selective laser trabeculoplasty (SLT).

CONCLUSION

SLT might be an effective therapeutic option and should be considered for the control of IOP in BAIT.

Unilateral acute iris transillumination syndrome with glaucoma and iris pigment epithelium dispersion simulating iris melanoma

Purpose

To report a patient with a unilateral presentation of glaucoma, pain, and acute iris transillumination syndrome simulating iris melanoma.

Observations

A 53-year-old male presented with blurred vision and pain in his right eye several weeks following a respiratory sinus infection managed by oral azithromycin. Examination of the right eye was notable for elevated intraocular pressure of 46 mm Hg, an irregular mid-dilated pupil, and diffuse iris transillumination with pigmentary seeding on the iris surface, in the anterior chamber angle, and on the sclera, suspicious for diffuse iris melanoma with glaucoma and extrascleral extension. Ultrasound biomicroscopy (UBM) of the right eye revealed circumferential anterior chamber angle and trabecular meshwork involvement by an infiltrative process corresponding to the pigmented cells noted clinically, while the ciliary body was unremarkable. Following enucleation, histopathology showed extensive necrosis of the iris pigment epithelium, sphincter, and dilator muscles with melanophagic infiltration in the anterior chamber angle and episclera, mild chronic non-granulomatous iridocyclitis, and no evidence of a melanocytic neoplasm. Although immunohistochemical studies for herpes simplex virus (HSV) types 1 and 2, varicella-zoster virus, and cytomegalovirus were negative, qualitative real-time polymerase chain reaction on paraffin-embedded tissue detected HSV-1 DNA. The combined clinical, pathologic, and molecular findings were compatible with unilateral acute iris transillumination syndrome, likely HSV-1 associated.

Conclusion and Importance

Unilateral acute iris transillumination syndrome with diffuse iris pigment epithelial loss can simulate iris melanoma. Prompt herpes viral studies may be informative.

Unilateral Acute Iris Transillumination Syndrome following Uneventful Phacoemulsification Surgery with Intracameral Moxifloxacin

PURPOSE

We report a case of unilateral acute iris transillumination (AIT) and iris sphincter paralysis in a 63-year-old male undergone uneventful phacoemulsification surgery with intracameral moxifloxacin (ICM).

CASE PRESENTATION

This is a case of AIT with no history of viral disease or use of systemic fluoroquinolone but an association with ICM after uneventful phacoemulsification. The clinical features of the affected eye are perfectly similar to what has been described in BAIT and hence we consider that unilateral AIT and BAIT share the same etiopathogenesis. At the end of the phacoemulsification, the patient received 0.15 ml of 5mg/ml moxifloxacin, which is notably higher than the dose that is commonly used for ICM. This may have caused the patient to develop BAIT-like syndrome after the ICM.

CONCLUSION

0.1 ml of 5mg/ml moxifloxacin or less should be used to reduce the risk of occurrences of this toxic effect caused by ICM.

Bilateral acute depigmentation of the iris in a child following exposure to insecticide spray

Bilateral acute depigmentation of the iris (BADI) is a rare disease of unkown etiology. We report a case of BADI in a 10-year-old child after accidental exposure to a herbal insecticide. Spontaneous iris repigmentation was observed during the follow-up period.

Bilateral acute iris transillumination (BAIT) syndrome: literature review

The authors conducted a literature review about bilateral acute iris transillumination (BAIT) syndrome, a new and relatively unknown syndrome that should be described and made known to the greatest number to avoid potential diagnostic and therapeutic errors. The first cases date back only to 2004 and a total of 79 cases have been published to date, mainly in Europe and especially in Turkey and Belgium. It mainly affects young women between the ages of 30 and 50, and symptoms are often preceded by an upper airway infection. There is also a majority of cases where the onset of the syndrome follows oral intake of moxyfloxacin. The clinical signs are dominated by strong photophobia, secondary to a spectacular transillumination of the iris. Other classical symptoms are conjunctival infection, eye pain, blurred vision, temporary ocular hypertonia, fixed mid-dilated pupils, and pigment dispersion in the anterior chamber with pigmentary deposits in the trabecular meshwork in gonioscopy, symptoms that may be mistaken for uveitis. After a few weeks or months of evolution, persistent sequelae were pupillary atony and chronic and bilateral transillumination of the iris, leading to significant photophobia and sometimes persistent ocular hypertension. The BAIT syndrome is close to the bilateral acute depigmentation of the iris (BADI) syndrome, which is similar to BAIT but lacks associated transillumination. A few cases of patients with BAIT syndrome on one eye and BADI syndrome on the contralateral eye have been described, which confirms some form of link between the two clinical entities.

Bilateral acute iris transillumination: Case report

Bilateral acute iris transillumination (BAIT) is a recently defined disease characterized with bilateral acute, severe pigment dispersion of iris and pupil sphincter paralysis. The etiopathogenesis of the disease is unknown, but antibiotics such as moxifloxacin, clarithromycin, viral infections, and fumigation therapies were considered as probable etiologic factors. A 33-year-old female was referred to our clinic for acute iridocyclitis refractory to azathioprine, colchicum and corticosteroid treatments. Ophthalmic examination revealed bilateral pigment dispersion, significant iris transillumination, heavy pigment deposition in iridocorneal angle, and elevated intraocular pressure. Upon systemic evaluation she was found to have bacterial urinary tract infection. BAIT is an important cause of pigment dispersion and clinicians must be vigilant for this condition to avoid unnecessary diagnostic tests and treatment.