Contact lens & anterior eye : the journal of the British Contact Lens Association
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Cont Lens Anterior Eye · Dec 2012
Scleral contact lens management of bilateral exposure and neurotrophic keratopathy.
We report an interesting case of therapeutic scleral lens management of bilateral exposure and neurotrophic keratopathy resulting from bilateral cranial nerve (CN) palsies including V, VI and VII, which caused lagophthalmos and anaesthetic corneas. Subsequent development of severe exposure keratitis with vascularisation and keratinisation of the inferior cornea was previously treated with intensive ocular lubrication, botulinum toxin injections to the upper eyelid levator muscle, temporary tarsorrhophies, bilateral amniotic membrane grafts, punctal plugs, lid taping, gold eyelid weights and soft bandage contact lenses. Corneal integrity was re-established but visual acuity remained significantly compromised by corneal vascularisation, scarring and keratin deposits. ⋯ Therapeutic, high Dk, non-fenestrated, saline filled, scleral lenses were fitted. Daily wear of these lenses have protected and hydrated the cornea, enabling corneal surface recovery whilst retaining visual and social function. The visual acuities 6 months post-scleral fitting with lenses in situ are R 0.90 logMAR and L logMAR 0.70.
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Cont Lens Anterior Eye · Oct 2012
Randomized Controlled Trial Comparative StudyComparison of patient-reported visual outcome methods to quantify the perceptual effects of defocus.
Patient-reported subjective responses have become increasingly popular in describing contact lens visual performance and discriminating between designs. The purpose of the current study is to evaluate the ability of patient-reported measures of vision to quantify the perceptual effects of defocus. ⋯ The NRS and VAS yield virtually identical rating responses, but both differing slightly, however from the CRS. Each scale successfully discriminated levels of blur smaller than 0.25 D with only a single measurement.
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Cont Lens Anterior Eye · Aug 2012
Randomized Controlled TrialClinical performance of an orthokeratology lens fitted with the aid of a computer software in Chinese children.
To report the clinical performance of the orthokeratology (ortho-k) lens fitted with computer assisted system after 1-month of lens wear, in a group of children undergoing ortho-k treatment in a 2-year randomized myopic control study. ⋯ Computer assisted system for Menicon Z Night lens fitting gave a high first fit success rate. Menicon Z Night lens was effective in myopic reduction and provided stable vision after one week of lens wear. Ocular health of the subjects after lens wear was generally unremarkable.
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Cont Lens Anterior Eye · Aug 2010
Comparative StudyContact lens user profile, attitudes and level of compliance to lens care.
To identify the demographics profile of lens wearers, and to evaluate the scope and level of noncompliant, behaviours in lens wearers. ⋯ Poor hand hygiene, inadequate lens care, and not remembering when to come back for aftercares are the common non-compliant behaviours in lens wearers. Purchase of lenses via the internet was associated with lack of awareness of aftercare visit.