Palpebral myiasis

Abstract

Myiasis is most prevalent in Mexico, central and south America, tropical Africa, and the southwestern United States. Although dermal myiasis is rare in most of the United States, it is a disorder that may be seen in international travelers. In the United States, external myiasis is usually caused by the cattle botfly. We report here a case of ophthalmomyiasis involving the left upper eyelid of a child. We examined a six-year-old boy who presented to the Massachusetts Eye and Ear Infirmary (MEEI) in September 1998. He complained of persistent swelling of his left upper eyelid for the previous ten days. The edema and erythema were unresponsive to warm compresses and oral antibiotics. Ocular examination revealed a mild preseptal cellulitis of the left upper eyelid with a small draining fistula. On slit-lamp examination, we found one larva protruding intermittently from the fistula site. The larva was extracted with forceps, wrapped in a moist towel and sent in a jar to the parasitology laboratory. The specimen was identified as a Cuterebra larva by a parasitologist at the Harvard School of Public Health. One week later, the patient's eyelid edema and erythema had completely resolved.

Animal-inflicted ocular and adnexal injuries in children: A systematic review

“…130 The orbital case was caused by an infestation of Cochliomia monomoeurax. 41 The United States 22,44,46,66,79,114,116,122 and India 15,65,84,101,104,115,129,130,150 were the most common geographical locations for these reports, with 29% of articles originating from each of these countries.…”

“…Dermatobia hominis was the most common larva to cause lid myiasis (8 of 14 cases) 46,114,120,122,158 followed by Cuterebra larva (3 of 14 cases). 62,79,116 There were single lid myiasis cases of Chrysomya bezziana, 24 Lucilia, 27 reindeer Warble fly, 139 and Wohlfahrtia magnifica. 101 Oestrus ovis was the most common causative agent identified in ocular surface myiasis (84.6% of identified cases), 15,44,65,66,84,104,150,166 There were also single cases of Chrysomya bezziana 5 and Muscae fly.…”

“…The one retrospective review found 6.15% of external ophthalmomyiasis cases occurred in individuals younger than 5 years. 37 The clinical manifestations of external ophthalmomyiasis fell into 3 groups: lid myiasis (48.6%), 24,27,39,46,62,79,101,114,116,120,122,129,139,158 ocular surface myiasis (45.9%), 5,15,22,39,44,65,66,84,104,115,130,138,145,150,166 and orbital infestation (25.4%). 41,129 The mean age for the overall cohort was 9.1 years (range, 12 days to 17 years).…”

Myiasis of the upper eyelid

“…Other flies that cause furuncular myiasis are Cordylobia anthropophaga, Cordylobia rhodaini, and Cuterebra. [1][2][3] Although rodents are the parasite's primary hosts, infestation of humans in areas where the fly is endemic is not uncommon.…”

Conjunctival Myiais caused by Oestrus ovis in a medical college student which responded to Ivermectin

“…[1] Human myiasis is an accidental infection rather than a facultative or obligatory one. [2] Oestrus ovis typically causes external ophthalmomyiasis because the larvae do not usually invade the tissue but cause significant irritation by their curved mandibular barbs and body spines. [1] External ophthalmomyiasis can present acute mucopurulent conjunctivitis, sub-conjunctival nodule or periocular skin lesion.…”