Evidence map›Paper›PMID 18427632›Full record

ArticleTransactions of the American Ophthalmological Society2007

Visual morbidity in thirty-four families with Schnyder crystalline corneal dystrophy (an American Ophthalmological Society thesis).

Jayne S Weiss

Open access · greenAbstract read
In one paragraph

Article in Transactions of the American Ophthalmological Society, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 51 citations in OpenAlex.

  1. Allosteric regulation of UBIAD1 trafficking from ER to Golgi revealed by chemical genetic screening.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Article
  3. Review
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  5. Review
  6. Article
  7. Functional study of SCCD pathogenic geneMolecular medicine reports · 2021
    Article
  8. Corneal dystrophies.Nature reviews. Disease primers · 2020
    Review
  9. Article
  10. Article
  11. Article
  12. Heredity and in vivo confocal microscopy of punctiform and polychromatic pre-Descemet dystrophy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2018
    Article
  13. Article
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  15. Review
  16. Article
  17. Article
  18. Crystalline subtype of pre-descemetic corneal dystrophy.Journal of ophthalmic & vision research · 2014
    Article
  19. Article
  20. Clinical and pathological features of a non-crystalline form of Schnyder corneal dystrophy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2012
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Jayne S WeissKresge Eye Institute, Department of Ophthalmology, Wayne State University School of Medicine, Detroit, Michigan, USA.
Kresge Eye Institute · US

Funding

THE GENE FOR SCHNYDER'S CRYSTALLINE CORNEAL DYSTROPHYR01EY012972 · NEI · WAYNE STATE UNIVERSITY · PI WEISS, JAYNE S · 2000 to 2002
$770k
NEI NIH HHS EY 12972NEI NIH HHS R01 EY012972
6 · The paper itself

Abstract

purposeTo assess the findings, visual morbidity, and surgical intervention in Schnyder crystalline corneal dystrophy (SCCD).

methodsRetrospective case series of 115 affected individuals from 34 SCCD families identified since 1989. Age, uncorrected visual acuity, best-corrected visual acuity (BCVA), corneal findings, and ocular surgery were recorded. Prospective phone, e-mail, or written contact provided updated information. Patients were divided into 3 age categories for statistical analysis: less than 26 years of age, 26 to 39 years of age, and 40 years of age and older.

resultsMean age on initial examination was 38.8 +/- 20.4 (range, 2-81) with follow-up of 55 of 79 (70%) of American patients. While there were no statistical significant correlations between logMAR visual acuity and age (logMAR BCVA =.033 + .002 x age; R =.21), the linear regression showed the trend of worse visual acuity with age. BCVA at > or =40 years was decreased compared to <40 (P < .0001), although mean BCVA was > 20/30 in both groups. Twenty-nine of 115 patients had corneal surgery with 5 phototherapeutic keratectomy (3 patients), and 39 penetrating keratoplasty (PKP) (27 patients). PKP was reported in 20 of 37 (54%) patients > or =50 years and 10 of 13 (77%) of patients > or =70. BCVA 1 year prior to PKP in 15 eyes (9 patients) ranged from 20/25 to 20/400 including 7 eyes with other ocular pathology. BCVA in the remaining 8 eyes was 20/25 to 20/70 with 3 of these 4 patients reporting preoperative glare. Chart and phone survey suggested increasing difficulty with photopic vision with aging.

conclusionAlthough excellent scotopic vision continues until middle age in SCCD, most patients had PKP by the 7th decade. SCCD causes progressive corneal opacification, which may result in glare and disproportionate loss of photopic vision.

Indexed as

Visual AcuityAdolescentAdultAgedAged, 80 and overChildChild, PreschoolCorneaCorneal Dystrophies, HereditaryFollow-Up StudiesHumansLasers, ExcimerMiddle AgedPhotorefractive KeratectomyRetrospective StudiesVision Disorders

Identifiers

PMID18427632
PMCPMC2258126
OpenAlexW2168293280

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.