Ocular findings in 87 adults with Ghent-1 verified Marfan syndrome.
OBJECTIVE
To study ocular characteristics in 87 patients with verified Marfan syndrome (MFS) based on the Ghent criteria from 1996 (Ghent-1).


METHODS
The position of the lens was noted by observing the eye in different gaze directions in maximal mydriasis during slit lamp examination. Ectopia lentis (EL) was classified as subluxated (dislocation slightly backwards) or luxated (vertical or horizontal displacement). Corneal curvature, axial length (AL), corneal diameter, central corneal thickness, anterior chamber depth, lens thickness, condition of the iris, intraocular pressure, spherical equivalent and visual acuity were also investigated.


RESULTS
EL was found in 108 eyes (62.1%). Of the 68 phakic eyes with EL, 43 (63.2%) had subluxation. Mean AL was 24.80 ± 2.57 mm, and the AL was above 23.5 mm in 65.3%. Mean keratometry (K) in phakic eyes was 41.79 ± 1.70 diopters (D), and the K value was <41.5D in 46.8%. Iris hypoplasia was found in 3.4%. Myopia above 3D occurred in 38.4% of the phakic eyes. Mean binocular logMAR was 0.10 ± 0.32. Only five patients (5.7%) had a logMAR more than 0.5. These 5 patients had EL, and 4 of them were amblyopic.


CONCLUSIONS
In this strictly defined MFS group fulfilling the Ghent-1 criteria, the prevalence of EL was 62.1%. In many cases, the dislocation of the lens was subtle. On average, the corneas were flattened and the globe length was increased. Only a few patients were visually impaired. Children with MFS should have a thorough follow up to avoid amblyopia.
Department of Ophthalmology, Oslo University Hospital, Oslo, Norway; University of Oslo, Oslo, Norway.
Liv
L
Drolsum
Svend
S
Rand-Hendriksen
Benedicte
B
Paus
Odd R
OR
Geiran
Svein Ove
SO
Semb
D000328:Adult; D000368:Aged; D058452:Axial Length, Eye / Q000473:pathology*; D004479:Ectopia Lentis / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery; D005260:Female; D005901:Glaucoma / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy; D006801:Humans; D007498:Iris / Q000002:abnormalities; D008297:Male; D008382:Marfan Syndrome / Q000175:diagnosis* / Q000453:epidemiology; D008875:Middle Aged; D009216:Myopia / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery; D009664:Norway / Q000453:epidemiology; D012029:Refraction, Ocular / Q000502:physiology; D012163:Retinal Detachment / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult
Marfan syndrome; amblyopia; corneal curvature; ectopia lentis; eye axial length