In eyes with early AMD there is a dysfunction of preganglionic elements in the central 0-5 retinal degrees detectable by mfERG or MP-1 microperimetry. This impairment is not further influenced by the presence of late AMD in the fellow eye.
Patients treated with lutein/zeaxanthin and astaxanthin together with other nutrients were more likely to report clinically meaningful stabilization/improvements in VA, CS, and visual function through 24 months compared with nontreated subjects. Further studies are needed with more patients and for longer periods of time.
Intravitreal injections of 0.5 mg ranibizumab determine progressive improvement of retinal sensitivity until 24 months, although visual acuity levels off after 6 months, suggesting that microperimetry may give additional information about macular function not given by visual acuity alone.
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