View clinical trials related to Hyperopia.
Filter by:Analysis corneal and refractive stability of hyperopic laser-assisted in situ keratomileusis (LASIK) with and without concurrent prophylactic high-fluence cross-linking (CXL).
The purpose of this study is to evaluate worn AIR OPTIX® plus HYDRAGLYDE® (AOHG) lenses cleaned and disinfected with HYDRAGLYDE® containing lens solutions compared to each of the control habitual silicone hydrogel (SiHy) lenses cleaned and disinfected with habitual multi-purpose solution (MPS) for cholesterol uptake.
Hyperopia, also known as farsightedness, is a common type of refractive error where distant objects may be seen more clearly than objects that are near. Hyperopia is a known risk factor for amblyopia, (lazy eye), which may occur as a result of a squint (turn), or due to different levels of hyperopia between each eye (anisohyperopia). Hyperopia and anisohyperopia often persist into adulthood resulting in impairment to binocular vision. Current management involves prescribing spectacles or contact lenses to correct the hyperopia in each eye, usually as a lifelong intervention. In recent years there has been a great deal of interest in delaying progression of myopia (short-sightedness) by slowing down the growth of the eye using a particular type of contact lens termed a centre-distance multifocal design. There have been some encouraging results in this area to date. The proposed study here would explore the use of centre-near multifocal design contact lenses to encourage growth of the eye, thereby reducing hyperopia. There are three elements to the programme of research: 1. The natural progression of axial growth and refractive error will be measured in hyperopic and anisohyperopic subjects aged between 5 and 19. In other words, the natural growth of the eye will be followed without any intervention 2. As a paired eye control study anisohyperopes aged between 8 and 15 will be fitted with a centre-near multifocal design contact lens in their more hyperopic eye and a single vision contact lens in the fellow eye, if required. The progression of axial growth and refractive error will be measured and compared in each eye 3. Subjects' aged between 8 and 15 with similar levels of hyperopia in each eye will be fitted with centre-near multifocal design contact lenses in each eye. The progression of axial growth and refractive error will be measured and compared to subjects in the natural progression study
The purpose of this study is to evaluate the thickness accuracy of Laser-assisted in situ keratomileusis (LASIK) flaps created with the LenSx® Laser.
Bilateral dispensing clinical trial of fanfilcon A toric lens verses enfilcon A toric lens over two weeks.
Open label, 1-week daily disposable, dispensing study
To evaluate the clinical performance of an investigational silicone-hydrogel lens when worn on a daily wear modality over two weeks of lens wear.
To obtain subjective and objective feedback on the clinical performance of Biofinity lenses after at least two weeks daily wear in existing contact lens wearers compared with their habitual lenses.
The purpose of this study was to investigate the safety and efficacy of the Sauflon Clariti Monthly silicone hydrogel contact lenses with handling tint (Sauflon Pharmaceuticals Limited) by comparison with Air Optix Aqua silicone hydrogel lenses (Alcon Inc.) Subjects used OptiFree Replenish solution (Alcon Lboratories Inc.) for daily lens maintenance, care and storage.
Correlating the accuracy of a refraction done over telemedicine to that of a standard refraction, with a study hypothesis that the results will be equivalent.