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Optical devices in highly myopic eyes with low vision: a prospective study.

AbstractAIMS:
To compare, in relation to the cause of visual impairment, the possibility of rehabilitation, the corrective systems already in use and the finally prescribed optical devices in highly myopic patients with low vision. Some considerations about the rehabilitation of these subjects, especially in relation to their different pathologies, have also been made.
MATERIALS AND METHODS:
25 highly myopic subjects were enrolled. We evaluated both visual acuity and retinal sensitivity by Scanning Laser Ophthalmoscope (SLO) microperimetry.
RESULTS:
20 patients (80%) were rehabilitated by means of monocular optical devices while five patients (20%) were rehabilitated binocularly. We found a good correlation between visual acuity and retinal sensitivity only when the macular pathology did not induce large areas of chorioretinal atrophy that cause lack of stabilization of the preferential retinal locus. In fact, the best results in reading and performing daily visual tasks were obtained by maximizing the residual vision in patients with retinal sensitivity greater than 10 dB. A well circumscribed area of absolute scotoma with a defined new retinal fixation locus could be considered as a positive predictive factor for the final rehabilitation process.
DISCUSSION:
A more careful evaluation of visual acuity, retinal sensitivity and preferential fixation locus is necessary in order to prescribe the best optical devices to patients with low vision, thus reducing the impact of the disability on their daily life.
AuthorsC Scassa, G Cupo, M Bruno, R Iervolino, S Capozzi, C Tempesta, C Giusti
JournalLa Clinica terapeutica (Clin Ter) Vol. 163 Issue 3 Pg. e115-20 ( 2012) ISSN: 1972-6007 [Electronic] Italy
PMID22964702 (Publication Type: Journal Article)
Topics
  • Aged
  • Female
  • Humans
  • Lenses
  • Male
  • Myopia (complications, rehabilitation)
  • Prospective Studies
  • Vision, Low (etiology, rehabilitation)

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