ClinicalTrials.gg
Not yet recruitingNCT07807761Updated Sep 8, 2026

Katarak Surgery and Care

An observational study in Cataract Surgery Deneyimi and Cataract Surgery, sponsored by Eastern Mediterranean University. Not yet recruiting. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-08.

Sponsored by Eastern Mediterranean University · Observational

Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
60
Ages
18 Years and older
Sex
All
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Study summary

Although cataract surgery is an effective treatment method for improving visual function, it is important to evaluate the quality of life, daily living activities, independence level and psychosocial well-being of patients in the postoperative period. Changes in visual function can affect individuals' ability to live their daily lives, their perception of the risk of falling, and their adaptation to post-treatment care processes. For this reason, the recovery process after cataract surgery should be evaluated not only with clinical results, but also with patient-centered outcome criteria. The aim of this research is to investigate the preoperative and postoperative period in patients undergoing cataract surgery 1. and 3. The aim is to prospectively evaluate changes in care compliance, fear of falling, and vision-related quality of life during monthly follow-ups.

Read the detailed description

Cataract surgery is one of the most commonly performed and most successful surgical procedures worldwide, and it is performed on more than 20 million individuals every year (Lundström et al., 2021). Age-related cataract is a condition that develops as a result of the loss of transparency of the lens of the eye, especially in the older age group, and is considered one of the leading causes of vision loss on a global scale (World Health Organization [WHO], 2025). Although cataract surgery is performed in order to restore visual function and increase an individual's visual capacity, it is stated that surgical success should not be evaluated solely by clinical indicators such as visual acuity; its effects on an individual's daily life activities, level of independence, and visual-related quality of life should also be taken into account. Current studies have shown that cataract surgery provides significant improvement in vision-related quality of life and positively affects the functional status of individuals

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Conditions studied

  • Cataract Surgery Deneyimi
  • Cataract Surgery

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Keywords

  • Cataract; Cataract Surgery; Fear of Falling; Vision-Related Quality of Life; NEI-VFQ-25; Postoperative Care; Care Adherence; Visual Function
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In context

Cataract

1,629 studies on the registry are indexed under Cataract; 235 are open to participants now.

This study's planned enrollment of 60 is below the median of 89 across 475 observational studies indexed under Cataract.

Browse Cataract studies →

Lead sponsor

Eastern Mediterranean University is the lead sponsor of 141 studies on the registry; 17 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Adults aged 18 years and older who are scheduled to undergo cataract surgery at Dr. Burhan Nalbantoğlu State Hospital, Nicosia, Northern Cyprus.

Eligibility criteria

Inclusion Criteria Adults aged 18 years or older. Patients scheduled for cataract surgery. Able to communicate in Turkish and complete the questionnaires. Willing to participate voluntarily and provide . Willing to attend postoperative follow-up assessments at 1 and 3 months. Exclusion Criteria Presence of other ocular diseases that significantly affect visual function (e.g., advanced glaucoma, macular degeneration, or severe retinal disease).

Cognitive or communication problems that prevent completion of the questionnaires.

Development of a serious postoperative complication. Failure to complete the scheduled follow-up assessments.

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
60 participants (estimated)
Target follow-up
3 Months
Patient registry
Yes

Groups and cohorts

  • Cataract Surgery Group

    Description: A single cohort of patients undergoing cataract surgery will be followed prospectively from the preoperative period to 1 and 3 months after surgery. No research intervention will be administered. Participants undergoing cataract surgery will be followed prospectively from the preoperative period to 1 and 3 months after surgery. Fear of falling, vision-related quality of life, and postoperative care adherence will be assessed at the predefined follow-up time points. No additional intervention will be administered by the researchers.

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What researchers measure

Primary outcomes

  1. Outcome Measure: Change in Vision-Related Quality of Life

    Change in vision-related quality of life from the preoperative assessment to 3 months after cataract surgery, measured using the National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25). Higher scores indicate better vision-related quality of life.

    Time frame: Baseline (preoperative) to 3 months after cataract surgery

  2. Primary Outcome Measure: Vision-related quality of life measured by the NEI-VFQ-25

    Change in vision-related quality of life from the preoperative assessment to 1 month and 3 months after cataract surgery, measured using the National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25).

    Time frame: Baseline (preoperative), 1 month, and 3 months after cataract surgery

Secondary outcomes

  1. Outcome Measure: Fear of falling measured by the Falls Efficacy Scale-International (FES-I)

    Fear of falling will be assessed before and 3 months after cataract surgery.

    Time frame: Time Frame: Baseline (preoperative) and 3 months after cataract surgery

  2. Outcome Measure: Postoperative care adherence measured by the researcher-developed Cataract Surgery Postoperative Care Adherence Form

    Postoperative adherence to recommended eye care and follow-up practices will be assessed at 1 and 3 months after cataract surgery.

    Time frame: Time Frame: 1 month and 3 months after cataract surgery

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Study locations

No study locations are listed for this record.

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References and documents

Publications

  • Tan Y, Liu L, Li J, Qin Y, Sun A, Wu M. Effect of cataract surgery on vision-related quality of life among cataract patients with high myopia: a prospective, case-control observational study. Eye (Lond). 2022 Aug;36(8):1583-1589. doi: 10.1038/s41433-021-01697-6. Epub 2021 Jul 21. PubMed 34290442 ↗
  • Wan Y, Zhao L, Huang C, Xu Y, Sun M, Yang Y, An L, Lv S, Yu Y, Chen D, Zhou P, Wang Y, Zhang M, Jiang A, Chen Z, Li X. Validation and comparison of the National Eye Institute Visual Functioning Questionnaire-25 (NEI VFQ-25) and the Visual Function Index-14 (VF-14) in patients with cataracts: a multicentre study. Acta Ophthalmol. 2021 Jun;99(4):e480-e488. doi: 10.1111/aos.14606. Epub 2020 Sep 17. PubMed 32940410 ↗
  • Mangione CM, Lee PP, Gutierrez PR, Spritzer K, Berry S, Hays RD; National Eye Institute Visual Function Questionnaire Field Test Investigators. Development of the 25-item National Eye Institute Visual Function Questionnaire. Arch Ophthalmol. 2001 Jul;119(7):1050-8. doi: 10.1001/archopht.119.7.1050. PubMed 11448327 ↗
  • Makabe K, Oshika T, Inamura M, Hayashi K, Sugita G, Kozawa T, Fujishima K. Influence of cataract surgery for the first or second eye on vision-related quality of life (VR-QOL) and the predictive factors of VR-QOL improvement. Jpn J Ophthalmol. 2020 Sep;64(5):468-477. doi: 10.1007/s10384-020-00762-z. Epub 2020 Aug 2. PubMed 32743787 ↗
  • Groessl EJ, Liu L, Sklar M, Tally SR, Kaplan RM, Ganiats TG. Measuring the impact of cataract surgery on generic and vision-specific quality of life. Qual Life Res. 2013 Aug;22(6):1405-14. doi: 10.1007/s11136-012-0270-z. Epub 2012 Sep 27. PubMed 23015266 ↗

Individual participant data

Plan to share: No — Not applicable. Individual participant data (IPD) will not be shared with other researchers.

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Sep 2026, 0 months later.

Of 167 non-industry observational studies under Cataract, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 9 and three quarters within 30. This study's planned 0 months is below that.

Counting every sponsor, half of 234 studies reached it within 16 months; a quarter within 9 and three quarters within 30.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 2, 2026
First posted
Sep 8, 2026
StartEst.
Sep 21, 2026
Primary completionEst.
Sep 21, 2026
CompletionEst.
Jun 1, 2027
Last update
Sep 8, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 8, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07807761
Responsible party
Gülcan Dürüst Sakallı (lecture Dr., Eastern Mediterranean University) — Principal investigator
First posted
Sep 8, 2026
Start date
Sep 21, 2026 (estimated)
Primary completion
Sep 21, 2026 (estimated)
Completion
Jun 1, 2027 (estimated)
Last update
Sep 8, 2026

Study contacts

GÜLCAN Dürüst DÜRÜST SAKALLI
Contact
gulcan.durust@emu.edu.tr
05428789621
Gülten Sucu Dağ, Prof.
Contact
gulten.sucu@emu.edu.tr
Dilber Keskinel, Dr.
study chair · Bağsız

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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