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ORIGINAL ARTICLE
Year : 2018  |  Volume : 11  |  Issue : 3  |  Page : 259-264

Clinical profile of Omani keratoconus patients: An experience from a tertiary referral centre in Muscat


1 Department of Studies and Research, Oman Medical Specialty Board, Ministry of Defence Hospital, Muscat, Oman
2 Department of Ophthalmology Centre, Ministry of Defence Hospital, Muscat, Oman
3 Department of Ophthalmology, Ibra Hospital, Ibra, Oman
4 Department of Ophthalmology, Al-Nahdha Hospital, Muscat, Oman

Correspondence Address:
Dr. Haitham H Al-Mahrouqi
Oman Medical Speciality Board Way #4443, Bldg. 18, Block 244, Plot 404, North Azaiba, Muscat
Oman
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ojo.OJO_203_2017

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OBJECTIVE: To determine the demographics and associated clinical features of Omani keratoconus patients presenting to the Ministry of Defence Hospital (MODH) in Muscat. METHODS: This is a retrospective, descriptive study whereby the electronic medical records of all Omani keratoconus patients presenting to the MODH between January 2011 and December 2015 were reviewed. Demographic details, corrected distance visual acuity, refraction, corneal topography, pachymetry, and treatment received were all documented. RESULTS: There were 458 new keratoconus patients (257 males, 201 females) comprising a total of 893 eyes with a mean age of 20 years ± 5.6 (standard deviation) (range 6–46 years). On their first visit, 35% of eyes had spectacle-corrected distance visual acuity <0.5 logarithm of the minimum angle of resolution (LogMAR), 38% had central corneal thickness <450 um, and 25% had a mean keratometry more than 53 Diopter (D). According to the Amsler-Krumeich classification, 37%, 30%, 18%, and 16% of eyes classified into stages I, II, III, and IV, respectively. The severity of keratoconus did not correlate with the age of patients (rs = −0.13, P < 0.05). Over the 5-year period of the study, 502 eyes were fitted with rigid gas permeable lenses with 91% achieving the vision of 0.1 LogMAR or better, 22% of eyes underwent collagen cross linking, 3% underwent intracorneal ring segments implantation, and 4% underwent corneal grafting. CONCLUSION: A significant proportion of Omani keratoconus patients seen in the MODH showed advanced disease on their first visit. There was no correlation between severity and age suggesting that keratoconus can progress quickly in our pediatric group. Population-based studies are an important next step. Meanwhile, early detection and timely interventions to limit the burden of the disease are crucial.


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