Giancarlo Montani

Giancarlo Montani
Università del Salento | Unisalento · Department of Mathematics and Physics "Ennio De Giorgi"

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40
Publications
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290
Citations

Publications

Publications (40)
Article
Aim: To evaluate the short- (within 90 minutes) and long-term (after 21 days of treatment) effects of an artificial tear containing carbomer, hyaluronic acid, glycerol, and medium-chain triglycerides in patients with mild-to-moderate dry eye symptoms. Patients and methods: Subjects received the tested artificial tears in the right eye and contro...
Article
Full-text available
Scleral lenses were the first type of contact lens, developed in the late nineteenth century to restore vision and protect the ocular surface. With the advent of rigid corneal lenses in the middle of the twentieth century and soft lenses in the 1970’s, the use of scleral lenses diminished; in recent times there has been a resurgence in their use dr...
Article
The beam–plasma instability can be addressed as a reduced model in several contexts of plasma physics, from space to fusion plasma. In this paper, we review and refine some nonlinear features of this model. Specifically, by analysing the dependence of the nonlinear velocity spread as a function of the linear growth rate, we discuss the effective si...
Article
Full-text available
Purpose: To evaluate changes induced over time by three daily disposable (DD) contact lenses on tear meniscus height (TMH), pre-lens non-invasive break-up time (pre-lens NIBUT), tear film osmolarity (TO) and objective quality of vision (OQV). Patients and methods: Forty-six subjects enrolled in this prospective open-label unmasked non-randomized...
Conference Paper
Full-text available
Eye care professionals first identified computer vision syndrome (CVS) more than 30 years ago, when computers emerged in the 1980s. CVS refers to the physical discomfort and vision-related problems experienced during and after prolonged computer use. These include eye fatigue, ocular discomfort, dry eye, blurred vision, tearing, headaches, neck pai...
Article
Full-text available
Since 2000, we have reported on worldwide contact lens prescribing trends in this journal. In that first year, five markets were summarized; in the intervening years, we have received data from 70 countries including 47 reporting in 2018. The database gathered contains information on more than 383,000 contact lens fits. In 2018, information was rec...
Article
The nonlinear dynamics of energetic-particle (EP) driven geodesic acoustic modes (EGAM) in tokamaks is investigated, and compared with the beam-plasma system (BPS). The EGAM is studied with the global gyrokinetic (GK) particle-in-cell code ORB5, treating the thermal ions and EP (in this case, fast ions) as GK and neglecting the kinetic effects of t...
Preprint
The nonlinear dynamics of energetic particle (EP) driven geodesic acoustic modes (EGAM) in tokamaks is investigated, and compared with the beam-plasma system (BPS). The EGAM is studied with the global gyrokinetic (GK) particle-in-cell code ORB5, treating the thermal ions and EP (in this case, fast ions) as GK and neglecting the kinetic effects of t...
Article
Aims . We analyze the magneto-rotational instability (MRI) effects on gravitational collapse and its influence on the instability critical scale. Methods . In particular, we study an axisymmetric nonstratified differentially rotating cloud, embedded in a small magnetic field, and we perform a local linear stability analysis, including the self grav...
Article
Full-text available
Purpose: To investigate changes in higher order ocular aberrations (HOA) induced by the administration of 0.15% sodium hyaluronate tear enhancer (TE) and meibomian gland expression (ME) on the tear film of normal subjects. Methods: HOA values were obtained from the corneal surface (CS) and whole eye (WE), using a corneal topographer and Shack-Ha...
Article
Full-text available
Die Kurzsichtigkeit bei Kindern und Jugendlichen wird historisch mit Einstärkenbrillen oder -kontaktlinsen korrigiert. Jedoch haben Studien gezeigt, dass durch die Korrektur mit Einstärkenlinsen eine hypermetropische Defokussierung hinter der peripheren Retina entsteht und das diese das myopische Wachstum des Auges vorantreibt, während das Auge ver...
Article
Full-text available
La myopie chez les enfants est historiquement corrigée par des lunettes ou des lentilles de contact. Cependant des études ont montré, qu’une correction avec des lunettes unifocales conduit à une défocalisation hypermétropique en arrière de la rétine périphérique. Cela entraîne la croissance de l’oeil car il tente de focaliser l’image dans le plan d...
Article
Full-text available
Background To determine the peripheral refraction characteristics related to 18-month changes in refraction in Caucasian (Mediterranean) children. Methods Non-cycloplegic peripheral refraction at 10° intervals over the central ±30° of horizontal visual field over 18 months (baseline, 12 months, and 18 months of follow-up) was conducted in 50 healt...
Article
Full-text available
Every year since 2001, we have reported on the nature of contact lens markets around the world by collecting fitting information from optometrists, ophthalmologists, and opticians at the time of contact lens prescribing. The database of prospectively collected details of 335,000 lens fits is a powerful bank of clinical information, reflecting chang...
Article
We have been collecting data on worldwide contact lens prescribing habits for almost 20 years. Over this time period, we have amassed prospective information about 315,000 contact lens fits in 59 countries. This article marks our 15th report in Contact Lens Spectrum and features a breakdown of more than 23,000 contact lens fits in 34 markets.As in...
Article
Full-text available
Films of two fluorinated block copolymers (P(S81-Sz6) and P(S81-Sz11)) were investigated and compared with those of a commercial Teflon-like polymer (PTFE-AF) in the search for novel non-biofouling coatings able to minimize the amount of tear fluid (TF) proteins absorbed on contact lens (CL) surfaces. The adsorption of a solution containing lysozym...
Article
Purpose: To analyze tear osmolarity over time after instillation of two commercially available eyedrops. Methods: This prospective, nonrandomized, simultaneous, comparative, open-label, unmasked study included 40 eyes of 20 consecutive subjects (mean age, 34.8 ± 11.8 years) with a diagnosis of moderate dry eye. Subjects were instructed to admini...
Article
Full-text available
Each year we survey contact lens prescribing colleagues around the world (optometrists, opticians or ophthalmologists depending on the country) and request prospective information about the first 10 patients they fit with contact lenses after receipt of our survey. In this, our twelfth consecutive annual report for Contact Lens Spectrum, we present...

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