European journal of ophthalmology · 2019
Unilateral spontaneous filtering bleb dissecting into the cornea in a patient with high myopia.
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Sanjuán Pablo, Salvador-Culla Borja, Canut Maria Isabel, Barraquer Rafael I
Аннотация
PURPOSE: To report a case of a unilateral spontaneous filtering bleb dissecting into the cornea in a patient with high myopia.
CLINICAL CASE: A 33-year-old woman with high myopia (-18 D) presented with discomfort in the left eye. Ocular history included pars plana vitrectomy and cataract extraction and posterior chamber intraocular lens implantation in the left eye. Best-corrected visual acuity was 0.65 and intraocular pressure was 20 mmHg. Slit-lamp examination showed a filtering bleb in the upper-temporal quadrant, which extended and dissected the proximal cornea without affecting the visual axis. The morphology and content of the bleb was studied with anterior segment optical coherence tomography, which ruled out a corneal-scleral fistulization into the subconjunctival space. The spontaneous filtering bleb was resected surgically. Due to her high myopia, two strips of fascia lata were used to strengthen the area. In the postoperative period, a complete resection of the bleb was confirmed, without apparent leaking points and with a well-vascularized conjunctiva. No complications were noted. The patient maintained the same best-corrected visual acuity and intraocular pressure than before surgery.
CONCLUSION: The formation of a spontaneous filtering bleb is a rare entity in patients with high myopia, whose risk increases due to their thinned sclerae. The risk is even greater if they have undergone ocular surgeries. Resection of the filtering bleb in our case halted the progression of the corneal dissection, therefore respecting the transparency of the visual axis and preserving visual acuity.
CLINICAL CASE: A 33-year-old woman with high myopia (-18 D) presented with discomfort in the left eye. Ocular history included pars plana vitrectomy and cataract extraction and posterior chamber intraocular lens implantation in the left eye. Best-corrected visual acuity was 0.65 and intraocular pressure was 20 mmHg. Slit-lamp examination showed a filtering bleb in the upper-temporal quadrant, which extended and dissected the proximal cornea without affecting the visual axis. The morphology and content of the bleb was studied with anterior segment optical coherence tomography, which ruled out a corneal-scleral fistulization into the subconjunctival space. The spontaneous filtering bleb was resected surgically. Due to her high myopia, two strips of fascia lata were used to strengthen the area. In the postoperative period, a complete resection of the bleb was confirmed, without apparent leaking points and with a well-vascularized conjunctiva. No complications were noted. The patient maintained the same best-corrected visual acuity and intraocular pressure than before surgery.
CONCLUSION: The formation of a spontaneous filtering bleb is a rare entity in patients with high myopia, whose risk increases due to their thinned sclerae. The risk is even greater if they have undergone ocular surgeries. Resection of the filtering bleb in our case halted the progression of the corneal dissection, therefore respecting the transparency of the visual axis and preserving visual acuity.