08-06-2012  (1928 lectures)

Lent en toroide

Presbyopia is the normal loss of near focusing ability that occurs with age. Most people begin to notice the effects of presbyopia sometime after age 40, when they start having trouble seeing small print clearly — including text messages on their phone. You can't escape presbyopia, even if you've never had a vision problem before. Even people who are nearsighted will notice that their near vision blurs when they wear their usual eyeglasses or contact lenses to correct distance

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08-06-2012  (1755 lectures)    

Frontofocòmetre - Lensòmetre

Un frontofocòmetre o lensòmetre (en anglès:lensometer), és un instrument òptic per a la determinació del centre òptic i el mesurament de la potència d'una lent oftàlmica, així com la direcció de la component cilíndrica.[1][2] S'utilitza per marcar les lents oftàlmiques abans de tallar-les, d'acord amb la muntura. Disposa d'unes plomes per poder marcar el centre òptic i la direcció de

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08-06-2012  (1707 lectures)    

Examen oftalmològic

Presbyopia is the normal loss of near focusing ability that occurs with age. Most people begin to notice the effects of presbyopia sometime after age 40, when they start having trouble seeing small print clearly — including text messages on their phone. You can't escape presbyopia, even if you've never had a vision problem before. Even people who are nearsighted will notice that their near vision blurs when they wear their usual eyeglasses or contact lenses to correct distance

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01-11-2009  (63 lectures)    

Panellets-es


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01-11-2009  (67 lectures)    

Panellets


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01-11-2009  (110 lectures)    

Paleografia - Hoepli


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29-11-2008  (1661 lectures)    

Cardonae


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01-11-2008  (177 lectures)    

Paleografia - Hoepli


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