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A study to compare the visual performances under bright and dim light conditions in patients who had undergone cataract surgery with different types of lens implantation

Comparison between contrast sensitivity of different types of foldable monofocal intra ocular lenses.

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2018/04/013024
Enrollment
100
Registered
2018-04-04
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention1: NIL: NIL

Sponsors

Giridhar Eye Institute
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Of the patients implanted with MAC 60, Sensar, Rayner, SN 60WF, SA 60AT or Technis Monofocal IOLs (those who had a postoperative best corrected visual acuity of 6/6 N6 and no other ocular pathologies were selected.

Exclusion criteria

Exclusion criteria: (a) patients who have been not been advised cataract surgery (b) patients who have glaucoma (c) patients diagnosed as macular degeneration.

Design outcomes

Primary

MeasureTime frame
Comparison between visual performances under bright (photopic) and dim (mesopic) conditions in patients who had undergone uncomplicated cataract extraction with different types of monofocal intraocular lens (IOL) implantation using contrast sensitivity measurement.Timepoint: 12 Months—

Secondary

MeasureTime frame
At 3 weeks after surgery, the monocular contrast sensitivity function was measured using Pelli Robson Contrast Sensitivity measurement chart at one photopic luminance level and one mesopic luminance levels.Timepoint: At 3 weeks after surgery, the monocular contrast sensitivity function was measured using Pelli Robson Contrast Sensitivity measurement chart at one photopic luminance level and one mesopic luminance levels.—

Countries

India

Contacts

Public ContactDr Sara Jacob

Giridhar Eye Institute

drsara@giridhareye.org9447365029

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026