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Dry Eye Disease and Retinal Nerve Fiber Layer Thickness in Chronic Smokers

Cairo University (CU) logo

Cairo University (CU)

Status

Completed

Conditions

Retinal Nerve Fiber Layer
Chronic Smoking
Dry Eye Disease

Treatments

Other: Dry eye assessment

Study type

Observational

Funder types

Other

Identifiers

NCT07028736
MS-250-2023

Details and patient eligibility

About

This study aimed to examine the impact of long-term smoking on dry eye parameters and retinal nerve fiber layer thickness in individuals who are chronic smokers.

Full description

Dry eye disease (DED) is a multifaceted disorder of the ocular surface characterized by instability of the tear film, which subsequently leads to symptoms such as ocular discomfort, visual disturbances, and potential damage to the surface of the eye.

Cigarette smoking has been recognized as a possible contributing factor to the development of DED, with various reports suggesting that it may alter tear film composition and stability, leading to ocular surface damage.

Chronic smoking can lead to oxidative stress, vascular dysfunction, and inflammation, which may contribute to retinal nerve fiber layer (RNFL) thinning and optic nerve damage.

Enrollment

50 patients

Sex

All

Ages

30 to 60 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Age from 30 to 60 years.
  • Both sexes.
  • Chronic smokers.

Exclusion criteria

  • History of ocular surface diseases affecting tear production or secretion (such as Sjogren's syndrome or Stevens-Johnson disease).
  • Conjunctivitis.
  • Blepharitis.
  • Chronic contact lens use or gross lid abnormalities.
  • Preexisting glaucoma.
  • Retinal diseases.
  • Optic nerve pathology.
  • Ocular trauma.
  • Chemical burns.
  • Recent eye surgery (within three months).
  • Trachoma-related complications

Trial design

50 participants in 2 patient groups

Group A
Description:
Non-smokers.
Treatment:
Other: Dry eye assessment
Group B
Description:
Chronic smokers (≥1 pack/day for ≥10 years).
Treatment:
Other: Dry eye assessment

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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