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A 21-year-old man presented to our clinic with pain, redness and watering in his left eye (LE) for 1 day following an alleged history of accidental injury while working using a hammer–chisel. At presentation, corrected distance visual acuity (CDVA) was 20/25. Slit-lamp examination of the LE revealed full-thickness nasal corneal laceration with retained refractile foreign body and iris hole corresponding to the point of entry (figure 1A). Postdilation examination revealed a refractile stone piece embedded within the crystalline lens substance (figure 1B). Fundus examination of the LE was unremarkable, and B-scan did not show posterior segment intraocular foreign body (IOFB). Examination of the right eye was essentially normal. The patient underwent LE wound exploration, corneal foreign body removal and corneal tear repair.
A few angle foreign bodies were noted intraoperatively and were removed. The retrieved foreign bodies were plated on chocolate agar. The intralenticular foreign body (ILFB) was left untouched. A postoperative regimen of topical prednisolone acetate 1% suspension (Pred Forte, Alcon) in tapering doses and topical moxifloxacin 0.5% (Vigamox, Alcon) four times a day were initiated. One month postoperatively, CDVA of the LE remained 20/25; sutures were removed; and the ILFB appeared inert with no signs of inflammation, infection or glaucoma. The culture results at 1 week were negative for microbial growth. The visual axis of the LE was clear, with no signs of cataractous lens changes. Focal posterior synechia was noted at the lens-capsule entry site (figure 1C,D). Steroid drops were tapered down over the next 2 weeks, and antibiotic drops were prescribed for a week following suture removal, along with protective glasses.
LFBs are rare, comprising 7%–10% of all IOFBs.1 Most of these foreign bodies are metallic and require lens extraction due to ocular inflammation, glaucoma or metallosis.2 Glass and most plastic IOFBs tend to be inert, eliciting minimal or no inflammatory reaction.3 Moreover, these materials are associated with lower endophthalmitis rates compared with vegetative matter and metallic objects.4 The foreign body in our case appears to resemble glass-like material, possibly being composed of similar constituent chemical compounds. The extraction of inert ILFBs outside the visual axis can be deferred if they are not accompanied by the complications described previously.5–7 While retained IOFBs are associated with increased rates of endophthalmitis (up to three times more than for penetrating trauma alone), this was mainly due to posterior lens capsular breach and delayed primary repair,8 both of which were fortunately not seen in our patient. The diagnosis of ILFB is often straightforward by slit-lamp examination, but care must be taken to rule out posterior segment IOFB by B-scan or CT scan. These patients will require regular follow-up, and lens extraction should be planned at the first sign of complications due to the foreign body.
Inert intralenticular foreign bodies can be observed as long as they do not cause any intraocular complications.
Lens-sparing primary repair preserves accommodation and helps avoid major intraocular surgery (Extra Capsular Catarcat Extraction (ECCE), Intra capsular Catarcat Extraction (ICCE) and phacoemulsification) and its accompanying complications, especially in this young patient group.
The presence of posterior segment intraocular foreign body/posterior capsular breach in such cases must always be ruled out by thorough examination and appropriate imaging.
Patient consent for publication
The authors thank Raja shekar and Washeem Mohammed of Hyderabad Eye Research Foundation for capturing the clinical images.
Contributors Data collection, manuscript writing and review of literature: RNR; manuscript review and approval: MR; operating surgeon: RNR.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.