Oman Journal of Ophthalmology

LETTER TO THE EDITOR
Year
: 2014  |  Volume : 7  |  Issue : 3  |  Page : 161--164

Recurrent microbial keratitis in eyes with keratoconjunctivitis sicca with coexisting ocular surface pathology


Mayank A Nanavaty1, Anish N Shah2, Rima Al-Sukkar3, Damian B Lake2,  
1 Sussex Eye Hospital, Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
2 Corneoplastic Unit, Queen Victoria Hospital Foundation Trust, East Grinstead, United Kingdom
3 Prince Hamza Hospital, Jordan

Correspondence Address:
Mayank A Nanavaty
East Surrey Hospital, Surrey and Sussex NHS Trust, Canada Avenue, Redhill
United Kingdom




How to cite this article:
Nanavaty MA, Shah AN, Al-Sukkar R, Lake DB. Recurrent microbial keratitis in eyes with keratoconjunctivitis sicca with coexisting ocular surface pathology .Oman J Ophthalmol 2014;7:161-164


How to cite this URL:
Nanavaty MA, Shah AN, Al-Sukkar R, Lake DB. Recurrent microbial keratitis in eyes with keratoconjunctivitis sicca with coexisting ocular surface pathology . Oman J Ophthalmol [serial online] 2014 [cited 2022 Dec 7 ];7:161-164
Available from: https://www.ojoonline.org/text.asp?2014/7/3/161/142608


Full Text

Sir/Madam,

The management of microbial keratitis (MK) in presence of keratoconjunctivitis sicca and other coexisting surface pathologies presents a formidable medical and surgical challenge. MK in such eyes is associated with poor outcomes. [1],[2],[3] Other variables with a significant association with poor outcomes are prior treatment with topical steroids, [4] a delay in seeking treatment and failure to use fortified antibiotics. [5]

We performed a retrospective review of all eyes with keratoconjunctivitis sicca (KCS) coexisting with other surface pathologies such as mucosal scarring, previous transplants and/or eyelid disorders, which had recurrent MK (>1 discrete episode) and who were under regular follow-ups. The patients were identified from the microbiology register over 3 years period. The notes were reviewed in detail to study the clinical and microbiological profile.

Ten eyes (10 patients) were identified [Figure 1]. Average time interval between 2 episodes of MK was 5 months. Seven subjects experienced a total of 2 episodes of MK, while three patients had 3 episodes. [Table 1] shows the baseline characteristics and [Table 2] shows the characteristics of the eye at the time of the latest episode of MK. All had dryness of ocular surface and a degree of neurotrophia due to various reasons [Table 1]. All eyes had at least one corneal transplant except patient 2 [Table 1]. Five eyes had sutures in-situ at the time of recurrent MK [Figure 1]. Before the latest episode of MK, all eyes underwent at least one tarsorrhaphy procedure except one (patient no. 8, [Table 1]) that underwent several lid procedures for cicatricial entropion. All patients were on preservative free topical medications. Six eyes had BCVA of ≤6/60 before any episode of MK compared to 7 following the latest episode due to residual scarring [Table 2]. (This concurs with Musch et al, [6] who demonstrated poor visual outcomes in eyes with previous surgery/pathology and MK at a higher risk for poor visual outcome). Six eyes grew normal commensals (Coagulase negative Staphylococcus, Staphylococcus epidermidis, Staphylococcus aureus) on culture during the previous and the latest episodes of MK and 2 had no growth at all episodes [Table 1] and [Table 2]. At the latest episode of MK, 9 had a BCL, 7 were using topical steroids, 7 were using topical lubricants, 4 had concurrent meibomian gland dysfunction and were taking oral Doxycycline, 8 had occluded eyelid puncti and 5 had sutures at the time of recurrent infection [Table 2] and [Figure 1]. All patients on soft bandage contact lens (BCL) where using preservative free G. Chloramphinicol (Minims Chloramphinicol, Baush and Lomb, UK) 4 times a day. Additional tarsorraphies and eyelid procedures to correct residual exposure (blink lagophthalmos) led to prevention of recurrence of infection in all cases.{Figure 1}{Table 1}{Table 2}

Simple but important implications of this series are Use of even mild or low-dose topical steroid should be critically questioned in patient with KCS with coexisting surface pathology or any degree of corneal exposure in presence of corneal sutures, especially if they could be supplanted by other measures to reduce ocular surface inflammation, such as improved lid hygiene until the exposure is corrected surgically. All measures to promote corneal epithelial health and integrity, including topical lubricants and eyelid closure should be pursued aggressively. While soft BCL may prove useful in promoting epithelial healing and adhesion, they may also predispose to corneal infections by virtue of relative stasis of the tears and routine use of preservative free G Chloramphinicol with soft BCL does not eliminate the possibility of microbial keratitis. During episodes of active ocular surface inflammation, punctal occlusion should be discouraged until inflammation is controlled, to allow the drainage of tears with inflammatory cytokines.

References

1Bourcier T, Thomas F, Borderie V, Chaumeil C, Laroche L. Bacterial keratitis: Predisposing factors, clinical and microbiological review of 300 cases. Br J Ophthalmol 2003;87:834-8.
2Coster DJ, Badenoch PR. Host, microbial, and pharmacological factors affecting the outcome of suppurative keratitis. Br J Ophthalmol 1987;71:96-101.
3Keay L, Edwards K, Naduvilath T, Taylor HR, Snibson GR, Forde K, et al. Microbial keratitis predisposing factors and morbidity. Ophthalmology 2006;113:109-16.
4Gudmundsson OG, Ormerod LD, Kenyon KR, Glynn RJ, Baker AS, Haaf J, et al. Factors influencing predilection and outcome in bacterial keratitis. Cornea 1989;8:115-21.
5Titiyal JS, Negi S, Anand A, Tandon R, Sharma N, Vajpayee RB. Risk factors for perforation in microbial corneal ulcers in north India. Br J Ophthalmol 2006;90:686-9.
6Musch DC, Sugar A, Meyer RF. Demographic and predisposing factors in corneal ulceration. Arch Ophthalmol 1983;101:1545-8.