Abstract

AbstractPurpose To determine the prevalence of sleep apnea syndrome (SAS) in patients with normal‐tension glaucoma (NTG) and to evaluate the SAS screening in patients with NTG.Methods Prospective study of 35 patients with NTG. Patients answered an abbreviated questionnaire of SAS : louder snoring, long silent period during which there is no breathing, night awakenings and excessive daytime sleepiness. Then, the patients answered the Epworth sleepiness scale. All patients were tested by the sleep clinic and received a dual recording RU‐Sleeping©/ polysomnography for the diagnosis of SAS. The RU‐sleeping© is an interesting medical device easy to use, lightweight, compact and economic. It allows SAS screening at home and it permits to determine with the Epworth scale, patients first go into sleep recording.Results The mean age of patients was 73 years +/‐1,4 years. The positive predictive value (PPV) of abbreviated questionnaire was 54%. And the PPV of Epworth scale was 50% (33% of them had a Epworth score of 8‐14 and 17% had a Epworth score of 15 and above). The apnea/hypopnea index (AHI) was 36,9/h. The mean oxygen saturation was 85,5%. The PPV of RU‐Sleeping for SAS screening was 78%. The SAS prevalence in patients with NTG was 60%, and 66 % of them were severe (AHI>30).Conclusion Routine screening SAS should be recommended to any patient with normal‐tension glaucoma. So, in case of NGT diagnosis in ophthalmology, a simple interrogation evocative associated with a RU‐sleeping© could determine the patients to take charge of a priority especially in case of shortage of beds recordings. Our preliminary results suggest high prevalences of NTG or SAS, a larger sample in this prospective study will allow to confirm it in the future.

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