Ultrasound Biomicroscopy Study Of Accommodative State In Smartphone Abusers

Detection if there is association between spasm of accommodation and smart phone abuse by ultrasound biomicroscopy on anterior segment of the eye

Study Overview

• Status: Completed
• Conditions: Spasm of Accommodation
• Intervention / Treatment: Diagnostic test: Ultrasound Biomicroscopy of anterior segment of the eye

• Study Type: Observational
• Enrollment (Actual): 80

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Group (A): 40 smart phone abuser subjects (According to the smartphone questionnaire).

Group (B): 40 smart phone non user subjects.

Description

Inclusion Criteria:

1. Age 18 - 35 year.
2. Smart phone excessive use.
3. Emmetrope and myope patients.

Exclusion Criteria:

1. Hypermetrope patients.
2. Any form of tropia.
3. Anterior segment diseases either congenital or acquired.
4. Previous intraocular surgeries.
5. Presbyopic subjects.
6. Drugs induced spasm of accommodation: psychiatric drugs, pilocarpine, physostigmine, echothiophate, prostigmine, isoflurophate, muscarine, digitalis overdose and with sulphonamides
7. CNS diseases : Neurosyphilis, Raeder paratrigeminal neuralgia syndrome, cyclic oculomotor palsy, pineal tumor, Chiari malformation, pituitary tumor, metabolic encephalopathy,

Study Plan

How is the study designed?

Design Details

• Observational Models: Other
• Time Perspectives: Cross-Sectional

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
smartphone abusers; Auto refractometer without cycloplegia Uncorrected visual acuity (logMAR conversion). Anterior segment slit lamp examination UBM examination settings :Supine decubitus position.5150 Vumax (Sonomed, USA) under standard illumination Parameters that will be measured: corneal thickness, anterior chamber depth, angle to angle distance, cornea-posterior capsular lens distance, lens thickness, pupillary diameter, angle of anterior champer and trabecular-ciliary process distance. Cycloplegic refraction UBM examination will be repeated after cycloplegia with the same settings. The patients found to have spasm of accommodation will be subjected to ways to relief the spasm of accommodation and repetition of UBM if possible	Diagnostic test: Ultrasound Biomicroscopy of anterior segment of the eye; 5150 Vumax (Sonomed, USA) under standard illumination; Other Names: UBM
smartphone non users; Auto refractometer without cycloplegia Uncorrected visual acuity (logMAR conversion). Anterior segment slit lamp examination UBM examination settings :Supine decubitus position.5150 Vumax (Sonomed, USA) under standard illumination Parameters that will be measured: corneal thickness, anterior chamber depth, angle to angle distance, cornea-posterior capsular lens distance, lens thickness, pupillary diameter, angle of anterior champer and trabecular-ciliary process distance. Cycloplegic refraction UBM examination will be repeated after cycloplegia with the same settings. The patients found to have spasm of accommodation will be subjected to ways to relief the spasm of accommodation and repetition of UBM if possible	Diagnostic test: Ultrasound Biomicroscopy of anterior segment of the eye; 5150 Vumax (Sonomed, USA) under standard illumination; Other Names: UBM

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Difference in objective refraction measured before and after cycloplegia	diopter	40-60 minutes after instillation of cycloplegic drop

Collaborators and Investigators

• Sponsor: Randa Farouk Kashif
• Collaborators: Ain Shams University

Study record dates

Study Major Dates

• Study Start (Actual): October 1, 2016
• Primary Completion (Actual): December 15, 2016
• Study Completion (Actual): December 30, 2018

Study Registration Dates

• First Submitted: October 21, 2017
• First Submitted That Met QC Criteria: January 1, 2018
• First Posted (Actual): January 3, 2018

Study Record Updates

• Last Update Posted (Actual): August 31, 2021
• Last Update Submitted That Met QC Criteria: August 28, 2021
• Last Verified: August 1, 2021

More Information

Terms related to this study

• Other Study ID Numbers: FMASU MD 43/2017; Research Ethics Committee (Registry Identifier: 17/LO/0862)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided