Evidence map›Paper›PMID 28865239›Full record

ReviewBritish journal of pharmacology2017

Principles of pharmacology in the eye.

Sahar Awwad, Abeer H A Mohamed Ahmed, Garima Sharma, Jacob S Heng, Peng T Khaw, Steve Brocchini, Alastair Lockwood

Abstract readReview
In one paragraph

Review in British journal of pharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

93 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Topical pyridostigmine for ocular myasthenia gravis: a translational hypothesis.Medical hypothesis, discovery & innovation ophthalmology journal · 2026
    Article
  11. Article
  12. Baicalin nano-micelles for dry eye disease: LC-MS/MS method validation, pharmacokinetics and pharmacodynamics in preclinical models.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2025
    Article
  13. Review
  14. Review
  15. Optimizing instilled drug delivery: a scoping review of microdrops in ophthalmology.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  16. Review
  17. Review
  18. Review
  19. Review
  20. Article

33 more citing papers are in PubMed but not listed here.

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

7 authors.

Sahar AwwadUCL School of Pharmacy, London, UK.
Abeer H A Mohamed AhmedUCL School of Pharmacy, London, UK.
Garima SharmaUCL School of Pharmacy, London, UK.
Jacob S HengNational Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.
Peng T KhawNational Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.
Steve BrocchiniUCL School of Pharmacy, London, UK.ORCID http://orcid.org/0000-0003-0401-412X
Alastair LockwoodDepartment of Ophthalmology, Queen Alexandra Hospital, Portsmouth, UK.

Funding

Medical Research Council G0801650
6 · The paper itself

Abstract

The eye is a highly specialized organ that is subject to a huge range of pathology. Both local and systemic disease may affect different anatomical regions of the eye. The least invasive routes for ocular drug administration are topical (e.g. eye drops) and systemic (e.g. tablets) formulations. Barriers that subserve as protection against pathogen entry also restrict drug permeation. Topically administered drugs often display limited bioavailability due to many physical and biochemical barriers including the pre-corneal tear film, the structure and biophysiological properties of the cornea, the limited volume that can be accommodated by the cul-de-sac, the lacrimal drainage system and reflex tearing. The tissue layers of the cornea and conjunctiva are further key factors that act to restrict drug delivery. Using carriers that enhance viscosity or bind to the ocular surface increases bioavailability. Matching the pH and polarity of drug molecules to the tissue layers allows greater penetration. Drug delivery to the posterior segment is a greater challenge and, currently, the standard route is via intravitreal injection, notwithstanding the risks of endophthalmitis and retinal detachment with frequent injections. Intraocular implants that allow sustained drug release are at different stages of development. Novel exciting therapeutic approaches include methods for promoting transscleral delivery, sustained release devices, nanotechnology and gene therapy.

Indexed as

Drug Delivery SystemsAdministration, OphthalmicAnimalsBiological AvailabilityDelayed-Action PreparationsDrug CarriersDrug DesignEyeEye DiseasesHumansNanotechnologyOphthalmic SolutionsDelayed-Action PreparationsDrug CarriersOphthalmic Solutions

Identifiers

PMID28865239
PMCPMC5715579

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.