Central corneal thickness and its relationship to intraocular pressure in mucopolysaccararidoses-1 following bone marrow transplantation

PurposeTo examine the ocular findings in mucopolysaccaridoses-1 (MPS-1) and the relationship between intraocular pressure (IOP) and central corneal thickness following bone marrow transplantation.MethodsSetting: clinical practice. Subjects: 23 subjects with MPS-1 following bone marrow transplantation were examined. Observation procedures: age, sex, visual acuity, presence of strabismus, refractive error, fundus examination, intraocular pressure, and central corneal thickness were assessed for each individual. Main outcome measure: correlation of central corneal thickness with intraocular pressure. Only the right eye was used in correlations.ResultsForty-six eyes of 23 subjects were examined. All subjects had been treated with successful bone marrow transplantation with mean follow-up of 8.5 years. Ages ranged from 17 months to 19 years (SD 5.03). Of the subjects, 60.8% were female; 85.5% were hyperopic; 8.6% had best-corrected visual acuity of ≥6/12; 34.5% had best-corrected visual acuity of <6/12 and >6/36 with 56.9% <6/36; 30% had strabismus. IOP ranged from 13 to 41 mm Hg with four children on antiglaucoma therapy. Central corneal thickness ranged from 484 μm to 705 μm and was moderately correlated with measured IOP in the right eye (r = 0.56). Corneal opacification moderately correlated with central corneal thickness (r = 0.57). Seventy percent had a normal disk evaluation; 30% had abnormal disk cupping.ConclusionThis is the first large case series of MPS-1 subjects demonstrating a correlation between measured IOP and central corneal thickness. All subjects had corneal opacification moderately correlating with corneal pachymetry.